Industrial Disc Brakes

Transcription

A L T R A
I N D U S T R I A L
M O T I O N
Industrial Disc Brakes
Introduction/Selection Guide
Twiflex Limited...
Leaders In Advanced
Braking Technology
Page 2 - 3
Applications
Page 4 - 5
Overview
Brake Calipers
Page 6 - 7
MU Series
Page 8 - 10
MS Series
Page 11 - 14
MR Series
Page 15 - 21
MX Series
Page 22 - 26
GMX Series
Page 27 - 29
GMR Series
Page 30 - 37
Modular Series
Page 38
Disc and Hub Assemblies
Page 39
Monitoring Units
Page 39
Materials, Traceability & Finishes
type of industry.
Page 40
Hydraulic Power Units
From defining complete braking systems to
Page 41 - 44
Braking Calculations
Page 45
Application Form
Twiflex Limited, with headquarters in
Twickenham, England, specialises in the
design, manufacture and supply of
Advanced Braking Technology for industrial
applications. With extensive in-house
facilities, Twiflex enjoys a global reputation
for quality.
Founded in 1946, Twiflex has produced
more than half a million brake units,
frequently for safety-critical duty, for
applications around the world. From
textile machines in the north of England to
the world's deepest mine shaft in South
Africa, Twiflex brakes are specified by
engineers and system designers in every
identifying spare components, the catalogue
provides useful guidance. An approximate
brake selection may be made by assessing
the data shown, however, it is always
recommended to contact a Twiflex
representative for a more detailed proposal.
Select the right Twiflex Brake to
meet your requirements
The charts below illustrate the range of standard TWIFLEX disc brakes. Model-specific publications and data sheets are available for
each caliper shown. To determine which will suit your application compare the braking force required with that generated by
the calipers*, noting that other factors (e.g. disc speed, pad material, service factor, etc) should be considered for optimal selection.
Twiflex application engineers can provide assistance for your particular application.
Spring Applied Calipers
†
MUS - (P)
MS - (P, H)
MR - (P, H, E)
MX- (P, H, E)
GMR - (P, H)
VCS - (H)
VKSD - (H)
VS - (H)
VMS - (H)
0.4
1
10
100
1000
BRAKING FORCE kN
† KEY:
Direct Acting Calipers
(P) = Pneumatic, (H) = Hydraulic, (E) = Electrical, (M) = Mechanical
†
T2 - (P, H)
MU - (P, M)
MS - (P, M)
MR - (P, M)
MX - (P, M)
T20 - (P, H)
VC - (H)
GMR - (P, H)
T40 - (H)
VCH - (H)
VKHD - (H)
VH - (H)
VMH - (H)
0.4
1
10
100
1000
BRAKING FORCE kN
*It should be noted that the braking forces shown are for a single caliper only and multiple calipers may often be used on a disc, with
available space being the typical limitation.
Twiflex disc brakes are found on industrial
applications worldwide.
Metals
Twiflex brakes are used on critical
applications throughout the metals
processing industry for reliable
dynamic, holding and emergency-stop
duties. Typical applications include:
•
•
•
•
Rolling and slitting
Finishing and coating
Cranes and haulage
Shears and forging
Mining
For more than 40 years,
Twiflex has been specified to
provide safety-critical braking
control in the mining
industry. Typical applications
include:
•
•
•
•
•
Lifts and Escalators
Disc brake systems are typically used on industrial
(freight) elevators and mass transit escalators. They
provide safe, controlled braking in the event of power
loss or emergency stop situations.
2
Winders and hoists
Conveyors
Grinding mills
Drag lines and shovels
Reclaimers and haulage
Energy
Disc brake systems are used on
and off-shore in the wind, wave,
tidal, and oil and gas industries.
Typical applications include:
• Wind and tidal turbine
over-speed control
• Draw-works stopping
and holding
• Wind turbine yaw
motion control
Entertainment
Twiflex calipers are used to provide speed control, static holding,
and emergency braking on a variety of applications, including:
•
•
•
•
Theme park rides
Simulators
Stage gear, props and scenery
Monorails
Marine and Shipping
Twiflex provides specialist solutions for the marine industry ranging from
main propulsion shaft and thrusters braking to winch drive and weapon
systems brakes.
3
Brake System Overview
Couplings
Twiflex manufactures a range of torsionally flexible, rubberelement couplings for a range of duties. Sometimes combined
with a brake disc, they are a critical interface between
components of a transmission system. Twiflex engineers are
available to discuss, analyse and advise on coupling suitability
for any application, and provide the technical support needed.
Brake Calipers
Twiflex offers the largest range of industrial disc brake calipers
in the world. Spring applied units may be retracted
pneumatically, hydraulically or electrically (depending on
caliper design) while most direct acting brakes have some
form of positive retraction device.
In general, pneumatically applied brakes are best suited for
light to medium stopping duties and for tensioning
applications where a high degree of control is required.
Hydraulically applied brakes address higher torque
requirements, while spring applied calipers are essential where
braking must be maintained in the event of supply system
failure.
Brake Pads
It is possible to make a realistic assessment of expected pad
life based on analytical and test data. Pad life is determined
by the area of the brake pad, the energy dissipated during
braking and the peak braking path temperature, and must be
a consideration whenever the duty includes dynamic braking.
Mechanically applied units are suitable for light tensioning
duties or where no external power is available - they may also
be specified when designers wish to use their own means of
actuation.
Discs
Twiflex produces a large range of standard discs and
associated mounting hubs. These can be supplied pilot bored
or fully machined to suit the particular mounting or shaft
arrangement.
Special discs for specific applications may also be supplied
on request – contact Twiflex to discuss your requirements.
4
Twiflex +44 (0) 20 8894 1161
P-1648-TF
11/10
Brake System Overview
Monitoring Equipment
A number of electro-hydraulic power pack options are
available, from standard ‘on/off’ control units to fully
customised closed-loop braking systems. All require careful
selection in order to ensure full compatibility with the type and
number of brakes being controlled. Consultation with Twiflex
engineers is recommended.
• The LC range provides a basic on/off control for a range of
Twiflex spring-applied and direct acting hydraulic calipers
• The MP range of modular power units offers flexibility of
design and function
• Custom units are available on request
Every brake installation requires monitoring visually,
mechanically, or electrically; particularly spring applied brakes
on safety-critical applications. Twiflex can supply a range of
electro-mechanical and electronic monitoring units and limit
switches to indicate any combination of brake status or pad
condition.
P-1648-TF
11/10
Materials, Finishes and Traceability
Twiflex is approved to BS EN ISO 9001:2000 and can offer
material and dimensional certification by Lloyds Register and
other regulatory authorities. All units are supplied with a
standard Twiflex finish while special protective coatings to suit
particular environments are available on request.
Twiflex +44 (0) 20 8894 1161
5
MU Series
MU Disc Brake Caliper Range
The Twiflex MU series of disc brake calipers is the smallest in
the Twiflex range and is primarily intended for light stopping
and holding duties. Its design permits left or right-handed
assembly.
The caliper is suitable for use with a disc thickness of 8mm,
however, with a revised thruster mounting arrangement, may
be used with discs 12.7mm thick. Minimum disc diameter is
150mm. A range of brake discs is available from Twiflex (see
Disc and Hub Assemblies).
160
(6.3)
18
(0.7)
Fixing bolt to be supplied by the customer
For pneumatic operation use dry, filtered and non-lubricated
compressed air. Pneumatic brakes require a control valve,
operated either manually or by pneumatic or electrical signal.
The ratings shown on the graphs are based on fully bedded in
and conditioned brake pads with a nominal friction coefficient
μ = 0.4. Twiflex disc brakes must be used with Twiflex
asbestos free brake pads.
66 (2.6)
89 (3.5)
M10 mounting bolt tighten
to 46Nm (34 lb.ft.)
Effective disc radius = actual radius (m) – 0.02m.
MU3
Pneumatically Applied – Spring Released
175 (6.9)
5
ø 118 (ø4.6)
Disc Diameter mm 150
200
250
300
350
400
460
515
3"
TWIFLEX
206
3"
(8.1)
TWIFLEX
3
MU
3"
TWIFLEX
TWIFLEX
TYPE
3"
3" TWIFLEX
Air Pressure – bar
4
2
TYPE
1
TYPE
MU
TYPE
MU
MU
0
0
TYPE
MU
66
(2.6)
MUP
100
200
300
400
500
600
700
Braking Torque Nm
Maximum Pressure 5 bar
Maximum Braking Force = 2.75kN@ 5 bar
Weight of caliper and thruster - 1.9kg
Weight of thruster only – 1.15kg
Volume displacement of thruster at 13mm stroke = 46ml
89
(3.5)
7
200
250
0
60
80
300
350
400
460
515
160
(6.3)
6
5
4
3
2
1
66
(2.6)
89
(3.5)
0
20
40
100
120
140
160
180
Braking Torque Nm
Maximum Braking Force = 0.72kN@ 7 bar
Volume displacement of thruster at 6mm stroke = 4ml
Retraction pressures where shown are calculated and may vary depending on spring tolerance.
6
Twiflex +44 (0) 20 8894 1161
P-1648-TF
11/10
MU Series
MUS2
Spring Applied – Pneumatically Released
188 (7.4)
200
250
300
350
400
460
515
TWIFLEX
0
172
(6.8)
1
32
TYPE
MU
3
0
89
(3.5)
66
(2.6)
MUS3
25
50
75
100
Maximum Pressure = 7 bar
Minimum Pressure for full retraction = 4.3 bar
Maximum Braking Force = 0.6kN
125
150
Braking Torque Nm
Weight of caliper and thruster – 1.36kg
Volume displacement of thruster at full
retraction = 20ml
200
(7.9)
200
250
300
350
400
460
515
0
ø 118 (ø4.6)
189 (7.4)
0.5
1
TYPE
MU
1.5
0
89
(3.5)
66
(2.6)
MUS4
25
50
75
100
125
150
175
200
Braking Torque Nm
Minimum Pressure for full retraction = 1.75 bar
retraction = 46ml
Disc Diameter mm 150 200
220 (8.7)
200
(7.9)
250
300
350
400
460
515
0
ø 118 (ø4.6)
1
2
3
TYPE
MU
4
5
89
(3.5)
66
(2.6)
MUH
0
100
200
300
400
500
Minimum Pressure for full retraction = 6.2bar
600
700
Braking Torque Nm
retraction = 46ml
Mechanically Applied – Hand Operated
148 (5.8)
200
250
300
350
400
460
515
350
300
TWIFLEX
Force – N
250
TWIFLEX
200
150
100
TYPE
MU
50
0
0
66
(2.6)
89
(3.5)
10
20
30
40
50
60
70
80
Weight of hand wheel assembly only – 1.15kg
90
100
110 120 130
Braking Torque Nm
P-1648-TF
11/10
Twiflex +44 (0) 20 8894 1161
7
MS Series
MS Disc Brake Caliper Range
20.5 (0.8)
to disc edge
The Twiflex MS series of disc brake calipers is suitable for use
with a disc thickness of 12.7mm. Minimum disc diameter is
250mm.
Normally one or two calipers are used per disc, mounted
horizontally (i.e. at the 3 o’clock or 9 o’clock position) to
prevent rubbing of one brake pad due to self-weight of the
thruster. A range of brake discs is available from Twiflex (see
Disc and Hub Assemblies).
12.7
(0.5)
73 (2.9)
135 (5.3)
2 holes ø 14 (ø 0.55)
87 Nm (M12-64 lb.ft.)
The ratings shown on the graphs are based on fully bedded
in and conditioned brake pads with a nominal friction
coefficient μ = 0.4. Twiflex disc brakes must be used with
Twiflex asbestos free brake pads.
137
(5.4)
121 (4.8)
165 (6.5)
MSA
Disc Diameter mm
250
300
350
400
460
515
610
7
140 (5.5)
6
227
(8.9)
T WIFLEX
MS
5
4
3
2
1
0
0
135 (5.3)
MSD
50
100
150
200
250
300
350
400
Braking Torque Nm
Maximum Braking Force = 2.76kN @ 7 bar
Weight of thruster only - 1.3kg
Volume displacement of thruster at full stroke = 300ml
165 (6.5)
Disc Diameter mm
250
300
350
400
460
515
610
7
ø 120
(ø 4.7)
6
216
(8.5)
TWIFLEX
MS
5
4
3
2
1
0
0
50
100
150
200
250
300
350
400
Braking Torque Nm
135 (5.3)
165 (6.5)
Weight thruster only - 1.0g
8
Twiflex +44 (0) 20 8894 1161
P-1648-TF
11/10
MS Series
MSE
ø 80
(ø 3.1)
Disc Diameter mm
250
300
350
400
460
50
60
515
610
7
6
234
(9.2)
TWIFLEX
MS
5
4
3
2
1
0
0
10
20
30
40
70
80
90
Braking Torque Nm
73
(2.9)
135 (5.3)
MSG
165 (6.5)
stroke = 8ml
ø 80
(ø 3.1)
Disc Diameter mm
250
300
350
400
460
515
610
7
6
234
(9.2)
TWIFLEX
MS
5
4
3
2
1
0
0
73
(2.9)
135 (5.3)
MSF
20
40
60
80
100
120
140
160
180
200
220
Braking Torque Nm
stroke = 21ml
165 (6.5)
Mechanically Applied – Lever Operated
Disc Diameter mm
121
(4.8)
250
300
350
400
460
515
610
1000
Force on lever – N
800
216
(8.5)
TWIFLEX
MS
600
400
200
73
(2.9)
135 (5.3)
0
0
165 (6.5)
50
100
150
200
250
300
400
450
500
550
Braking Torque Nm
Weight of caliper and lever assembly - 2.13kg
Weight of lever assembly only - 0.63kg
Maximum Braking Force =
1.88kN @ 0.8kN force on lever
MSH
350
ø 94
(ø 3.7)
Disc Diameter mm
250
0
100
300
350
400
460
515
610
1800
1600
1400
Force-N
1200
240
(9.5)
1000
800
600
TWIFLEX
MS
400
TWIFLEX
MS
200
0
73
(2.9)
135 (5.3)
50
11/10
200
250
300
Braking Torque Nm
165 (6.5)
Weight of caliper and hand wheel
Retraction pressures where shown are calculated and may vary depending on spring tolerance. assembly - 2.53kg
P-1648-TF
150
Weight of hand wheel assembly only - 1.03kg
Twiflex +44 (0) 20 8894 1161
9
MS Series
MSK
Spring Applied – Pneumatically Released, Self Adjusting
250
Disc Diameter mm
300
350
400
460
515
610
0
ø 182 (ø 7.2)
264
(10.4)
1
2
3
TWIFLEX
MS
4
0
100
200
300
400
500
600
700
800
Braking Torque Nm (Full Rate)
73
135 (2.9)
(5.3)
Disc Diameter mm
Maximum Braking Force full rate: 2.6kN
Minimum Pressure for full retraction: 5 bar
165 (6.5)
250
300
350
400
460
515
Disc Diameter mm
610
250
300
350
400
460
515
610
0
0
Volume displacement of thruster at
full retraction = 950ml
1
2
0.5
1
1.5
3
0
100
200
300
400
0
500
50
100
Maximum Braking Force 2/3rd rate: 1.74kN
Minimum Pressure for full retraction: 3.3 bar
MSL
150
200
250
Braking Torque Nm (1/3rd Rate)
Spring Applied – Hydraulically Released, Self Adjusting
Disc Diameter mm
250
300
350
400
460
515
610
Oil Pressure – bar
0
304
(12.0)
TWIFLEX
MS
135
(5.3)
TWIFLEX
MS
20
30
40
0
100
200
300
400
500
600
700
800
73
(2.9)
Disc Diameter mm
10
165 (6.5)
250
300
350
400
460
515
Disc Diameter mm
610
250
300
350
Weight of thruster only - 4kg
4mm retraction = 5ml
400
460
515
610
0
0
5
10
15
20
5
10
25
30
0
100
200
300
400
500
15
0
50
100
150
200
250
10
Twiflex +44 (0) 20 8894 1161
P-1648-TF
11/10
MR Series
MR Disc Brake Caliper Range
The Twiflex MR series of disc brake calipers is suitable for
use with discs of 12.7mm or 25.4mm thick. Minimum disc
diameter is 250mm. Minimum disc diameter for the MR2 is
460mm.
Normally one or two calipers are used per disc, but the
number may be increased depending on disc size. The
brakes may be positioned at any angle around the periphery
of the disc, but should ideally be mounted horizontally (i.e. at
the 3 o’clock or 9 o’clock position). If the caliper mounting
angle is greater than 10° from the horizontal, or on vertical
shaft applications, it should be fitted with an equalising link.
A range of brake discs is available from Twiflex (see Disc and
Hub Assemblies).
MR
Disc Brake Caliper
12.7 (0.5)
3 Holes Ø13 (Ø0.5)
87Nm (M12-94 lb.ft)
36.5 (1.44)
To disc edge
233
(9.2)
106.4
(4.2)
12.7 (0.5)
155.6 (6.1)
79.4 (3.1)
A
MR2
MR13
MR25
Disc
Thickness A
13
181
25
194
Disc Brake Caliper
12.7 (0.5)
3 Holes Ø13 (Ø0.5)
87Nm (M12-64 lb.ft)
36.5 (1.44)
To disc edge
233
(9.2)
106.4
(4.2)
12.7 (0.5)
155.6 (6.1)
A
141 (5.6)
Disc
Thickness A
MR13
13
181
MR25
25
194
P-1648-TF
11/10
Twiflex +44 (0) 20 8894 1161
11
MR Series
MRA
Disc
Diameter mm
250 300 350 400 460 515
610
710
810
915
7
6
259
(10.2)
5
4
3
2
1
0
140
(5.5
254 (10.0)
0
300
600
900
1200
1500
1800
Weight of MR caliper and thruster - 7.82kg
Weight of MR2 caliper and thruster - 8.32kg
MRB
2100
2400
2700
3000
Braking Torque Nm
full stroke = 300
Disc
Diameter mm
250 300 350 400 460 515
610
710
810
915
7
6
280
(11.0)
5
4
3
2
1
0
0
182 (7.2)
251 (9.9)
500
1000
1500
2000
2500
3000
MRD
3500
4000
4500
5000
Braking Torque Nm
full stroke = 426ml
Disc
Diameter mm
250 300 350 400 460 515
610
710
810
915
7
6
248
(9.8)
5
4
3
2
1
238 (9.4)
0
120 (4.7)
0
200
400
600
800
1000
MRE
1200
1400
1600
Braking Torque Nm
Weight thruster only - 1.15kg
full stroke = 150ml
Disc
Diameter mm 250 300 350 400 460 515
610
710
810
915
7
6
240
(9.5)
5
4
3
2
1
0
257 (10.1)
Retraction pressures where shown are calculated and may
vary depending on spring tolerance.
12
Twiflex +44 (0) 20 8894 1161
81
(3.1)
0
50
100
150
200
250
300
350
Braking Torque Nm
full stroke = 25ml
P-1648-TF
11/10
MR Series
MRG
Disc
Diameter mm
250 300 350 400 460 515
610
710
810
915
7
6
240
(9.5)
5
4
3
2
1
257 (10.1)
80
(3.2)
0
0
100
200
300
400
500
600
700
800
Braking Torque Nm
MRH
stroke = 64ml
Disc
Diameter mm
250 300 350 400
460
515
610
710
810
915
900
Force on Lever – N
800
364
(14.3)
700
600
500
400
300
200
100
0
0
216 (8.5)
MRW
80
(3.2)
500
1000
1500
2000
2500
3000
3500
Braking Torque Nm
Maximum Braking Force = 8.3kN @ 0.9kN
force on lever
Disc
Diameter mm
250 300 350 400 460 515
610
710
810
915
1800
1600
1400
1200
Force – N
240
(9.5)
1000
800
600
400
200
257 (10.1)
80
(3.2)
0
0
100
200
300
400
500
Weight of MR caliper and hand wheel
assembly - 7.8kg
Weight of MR2 caliper and hand wheel 8.3kg
600
700
800
900
1000 1100
Braking Torque Nm
P-1648-TF
11/10
Twiflex +44 (0) 20 8894 1161
13
MR Series
MRK
Disc
Diameter mm
0
280
(11.0)
250 300 350 400 460 515
610
710
810
915
1
2
3
4
0
286 (11.3)
Disc
Diameter mm
610
710
810
Disc
Diameter mm
915
1
2
1600
2000
2400
2800
250 300 350 400 460 515
610
710
810
915
0.5
1
1.5
3
0
200
400
600
800
1000
1200
1400
1600
1800
2000
retraction is 950ml
0
200
400
600
800
1000
retraction is 950ml
0
280
(11.0)
250 300 350 400 460 515
610
710
810
915
2400
2800
10
20
30
40
Disc
Diameter mm
Disc
Diameter mm
182 (7.2)
328 (12.9)
250 300 350 400 460 515
610
710
810
915
0
0
400
800
1200
1600
2000
Volume displacement of thruster at 4mm
retraction = 5ml
Weight of MR2 caliper and thruster - 11kg
5
0
Disc
Diameter mm
250 300 350 400 460 515
610
710
810
915
10
1200
0
0
MRL
800
retraction is 950ml
182 (7.2)
250 300 350 400 460 515
400
15
20
25
5
10
30
0
400
800
1200
1600
2000
Minimum Pressure for full retraction 33 bar
retraction = 5ml
Retraction pressures where shown are calculated and may vary
depending on spring tolerance.
14
Twiflex +44 (0) 20 8894 1161
15
0
200
400
600
800
1000
retraction = 5ml
P-1648-TF
11/10
MX Series
MX Disc Brake Caliper Range
shaft applications, it should be fitted with an inclined
mounting kit or equalising link. A range of brake discs is
available from Twiflex (see Disc and Hub Assemblies).
The Twiflex MX13, MX25, MX30 and MX40 series of disc
brake calipers is suitable for use with discs of 12.7mm,
25.4mm, 30mm and 40mm thick respectively. The SMX
caliper is only suitable for use with discs 12.7mm thick.
Minimum disc diameter is 300mm.
The MX/SMX calipers may be used with any of the Twiflex
series of thrusters and feature a patented link mechanism to
ensure uniform pad wear.
MX
Disc Brake Caliper
96 (3.8)
3 holes ø13 (M12-80Nm)
12.7 (0.5)
64
(2.5)
224
(8.8)
24 (0.95)
to disc edge
52
(2.05)
B
A
SMX
102 (4.0)
MX13
MX25
MX30
MX40
Disc
Thickness
13
25
30
40
A
130
134
142
150
B
75
84
75
84
Disc Brake Caliper
4 Holes Ø 14 (0.55)
(M12 - 80Nm)
180 (7.1)
To disc edge
45 (1.8)
TYPE SMX 13
BRAKE CALIPER
T WIFLEX
224
(8.8)
127 (5.0)
137 (5.4)
155 (6.1)
P-1648-TF
11/10
Twiflex +44 (0) 20 8894 1161
15
MX Series
MXA
Disc Diameter mm
ø140
(ø5.5)
300 350 400 460
515
610
710
810
915
2700
3000
7
6
268
(10.6)
5
4
3
2
1
0
0
52
(2.05)
206 (8.1)
MXB
300
600
900
1200
1500
1800
2100
2400
Braking Torque Nm
full stroke = 300ml
Disc Diameter mm 300 350 400 460 515
610
710
810
915
7
ø182
(ø7.2)
6
289
(11.4)
5
4
3
2
1
0
0
52
(2.05)
206 (8.1)
MXD
500
1000
1500
2000
2500
3000
3500
4000
4500
5000
Braking Torque Nm
full stroke = 426ml
Maximum Braking Force = 11kN @ 7 bar
Disc Diameter mm 300 350 400 460 515
610
710
810
915
1200
1400
1600
7
Ø120 (Ø4.7)
6
254 (9.4)
5
4
3
2
1
0
0
52
(2.05)
200 (7.9)
MXE
200
400
600
800
1000
Braking Torque Nm
Weight thruster only - 1.15kg
full stroke = 150ml
Disc Diameter mm 300 350 400 460 515
ø80
(ø3.1)
610
710
810
915
7
6
238
(9.4)
5
4
3
2
1
0
0
210 (8.3)
102
(4.0)
50
100
150
200
250
300
350
Braking Torque Nm
full stroke = 25ml
16
Twiflex +44 (0) 20 8894 1161
P-1648-TF
11/10
MX Series
MXG
ø80
(ø3.2)
Disc Diameter mm 300 350 400 460 515
610
710
810
915
7
6
238
(7.6)
5
4
3
2
1
0
0
52
(2.05)
102
(4.0)
210 (8.3)
MXH
100
200
300
400
500
600
700
800
900
Braking Torque Nm
full stroke = 64ml
Disc Diameter mm
300 350 400 460 515
610
710
810
915
900
Force on lever – N
800
391
(15.4)
700
600
500
400
300
200
100
0
0
500
1000
1500
2000
2500
3000
3500
Braking Torque Nm
52
(2.05)
102
(4.0)
209 (8.3)
MXW
Maximum Braking Force =
8.3kN @ 0.9kN force on lever
ø75
(ø2.9)
Disc Diameter mm
300 350 400 460 515
610
300
700
710
810
915
1800
1600
Spring Force – N
1400
236
(7.9)
1200
1000
800
600
400
200
0
214 (8.4)
52
(2.05)
102
(4.0)
0
100
200
400
500
600
800
900
1000 1100
Braking Torque Nm
Weight of caliper and hand wheel
assembly - 8.3kg
P-1648-TF
11/10
Twiflex +44 (0) 20 8894 1161
17
MX Series
MXEA
Spring Applied – Electrically Released, Self Adjusting
The EA actuator is a spring applied, electrically
released unit designed for use with the Twiflex MX
range of disc brake calipers. A 175W pancake motor
drives a ball screw mechanism, retracting the brake.
A feature of the unit is a patented self-adjusting
mechanism which maintains a constant air gap (and
consequently braking force) between pad and disc
as the pads wear.
307 (12)
The assembly is contained in a rugged, cast
aluminium housing, designed for service in the
harshest environments, which mounts directly to one
arm of the MX caliper.
226 (9)
327 (12.9)
Maximum Braking Force = 6kN
Weight of caliper and actuator - 15.7kg
315 (12.4)
Weight actuator only - 8.7kg
Weight of controller - 5.5kg
The MXEA is supplied complete with a solid state
controller, suitable for all AC supply voltages, which
converts the supply to the required DC output for the
pancake motor. A 24VDC unit is also available. The
brake is released when power to the controller is
switched on, and applied when power is
disconnected. Controlled application of the brake
occurs, electrically damped by using the motor back
E.M.F. and a damping resistor.
The controller is housed in a strong, steel, wall
mounted enclosure (215mm x 215mm x 150mm
deep), protected to IP44 as standard (higher rating
on request).
Braking force adjustable to 50% of maximum.
18
Twiflex +44 (0) 20 8894 1161
P-1648-TF
11/10
MX Series
MXS
Disc Diameter mm
300 350 400 460 515
610
710
810
915
0
ø196 (ø7.7)
1
295
(11.6)
XS 9.6
XS 7.5
XS 4.6
52
(2.05)
A
Disc Diameter mm
300 350 400 460 515
610
710
810
A
281
270
270
2
3
4
5
6
0
1000
2000
3000
4000
5000
6000
Braking Torque Nm (XS 9.6)
Maximum Braking Force XS 9.6: 14.3kN
retraction = 1.19 l
915
Disc Diameter mm 300 350 400 460
0
515
610
710
810
915
0
1
2
3
1
2
4
5
3
0
500
1000
1500
2000
2500
3000
3500
4000
4500
5000
0
retraction = 1.19 l
MXSH
500
1500
2000
2500
3000
retraction = 1.19 l
Disc Diameter mm
Disc Diameter mm
XSH 9.6
XSH 7.5
XSH 4.6
52
(2.05)
300 350 400 460 515
610
710
610
710
810
915
10
267
(10.5)
A
300 350 400 460 515
0
ø140
(ø5.5)
810
A
315
290
290
20
30
40
50
60
70
0
1000
2000
3000
4000
5000
6000
Braking Torque Nm (XSH 9.6)
Maximum Braking Force XSH 9.6: 14.3kN
retraction = 9.1ml
915
Disc Diameter mm 300 350 400 460 515
0
610
710
810
915
0
10
5
1000
20
30
40
10
15
20
25
50
30
60
0
500
1000
1500
2000
2500
3000
3500
4000
4500
5000
retraction = 9.1ml
35
0
500
1000
1500
2000
2500
3000
Weight of caliper and thruster - 11kg
retraction = 9.1ml
P-1648-TF
11/10
Twiflex +44 (0) 20 8894 1161
19
MX Series
MXK
Disc Diameter mm
300 350 400 460 515
610
710
810
915
0
182 (7.2)
1
288
(11.3)
2
3
4
5
6
0
515
610
710
810
1200
915
0
0
1
0.5
800
1600
2000
2400
2800
52
(2.05)
241 (9.5)
400
2
3
4
515
610
710
810
915
1
1.5
2
0
400
800
1200
1600
2000
Maximum Braking Force 2/3 rate: 4.3kN
Disc Diameter mm
300 350 400 460 515
610
710
810
0
200
400
600
800
1000
915
0
0.5
1
1.5
2
0
200
400
600
800
1000
1200
1400
Braking Torque Nm (1/2 Rate)
20
Twiflex +44 (0) 20 8894 1161
P-1648-TF
11/10
MX Series
MXL
Disc Diameter mm
300 350 400 460 515
610
710
810
915
0
182 (7.2)
288
(11.3)
10
20
30
40
0
52
(2.05)
282 (11.1)
515
610
710
810
400
800
1200
1600
2000
2400
2800
915
515
610
710
810
915
0
0
5
10
15
20
5
10
25
15
30
0
400
800
1200
1600
2000
0
200
400
800
1000
1200
P-1648-TF
11/10
Twiflex +44 (0) 20 8894 1161
21
GMX Series
GMX Disc Brake Caliper Range
shaft applications, it should be fitted with an inclined
mounting kit or equalising link. A range of brake discs is
The Twiflex GMX series of disc brake calipers is similar to the
MX range but offers greater pad area. The GMX25, GMX30
and GMX40 are suitable for use with discs of 25.4mm,
30mm and 40mm thick respectively. The SGMX caliper is
only suitable for use with discs 25.4mm think. Minimum disc
diameter is 610mm.
The GMX/SGMX calipers may be used with any of the
Twiflex series of thrusters and feature a patented link
mechanism to ensure uniform pad wear.
GMX
Disc Brake Caliper
3 holes ø 13 (ø0.51)
M12-87 Nm (M12-64 lb.ft.)
96 (3.8)
12.7 (0.5)
324
(12.8)
64
(2.5)
22 (0.87)
to disc edge
Disc
Thickness A
GMX25
25
152
GMX30
30
155
GMX40
40
162
84 (3.3)
160 (6.3)
A
SGMX
Disc Brake Caliper
170 (6.7)
124 (4.9)
4 holes ø 18 (ø0.71)
M16-200Nm (M16-148 lb.ft.)
45
(1.77)
97 (3.8)
to disc edge
324
(12.8)
152 (6.0)
22
Twiflex +44 (0) 20 8894 1161
P-1648-TF
11/10
GMX Series
GMXA
Disc Diameter mm
610
710
810
915
7
6
373
(14.7)
T WIFLEX
T WIFLEX
TYPE GMX
BRAKE CALIPER
TYPE GMX
BRAKE CALIPER
5
4
3
2
1
GMX
0
300
600
900
1200
1500
GMX
TWIFLEX
TWIFLEX
160
(6.3)
300 (11.8)
GMXB
0
1800
2100
2400
2700
3000
Braking Torque Nm
stroke = 300ml
Disc Diameter mm
610
710
810
915
7
6
395
(15.6)
T WIFLEX
TYPE GMX
BRAKE CALIPER
2
GMX
GMX
0
TWIFLEX
TWIFLEX
GMXD
3
0
500
1000
1500
2000
2500
3000
3500
4000
4500
Braking Torque Nm
stroke = 426ml
ø182
(ø7.2)
218 (8.6)
4
1
T WIFLEX
TYPE GMX
BRAKE CALIPER
5
Disc Diameter mm
610
710
810
915
7
6
363
(14.3)
T WIFLEX
TYPE GMX
BRAKE CALIPER
4
3
2
1
0
GMX
GMX
TWIFLEX
0
200
400
600
800
160
(6.3)
205 (8.1)
GMXE
TWIFLEX
T WIFLEX
TYPE GMX
BRAKE CALIPER
5
1000
1200
1400
1600
Braking Torque Nm
stroke = 150ml
Disc Diameter mm
610
710
810
915
7
344
(13.5)
6
T WIFLEX
TYPE GMX
BRAKE CALIPER
T WIFLEX
TYPE GMX
BRAKE CALIPER
5
4
3
2
1
0
GMX
GMX
TWIFLEX
TWIFLEX
0
50
100
150
223 (8.8)
P-1648-TF
11/10
160
(6.3)
200
250
300
Braking Torque Nm
stroke = 25ml
Twiflex +44 (0) 20 8894 1161
23
GMX Series
GMXG
Disc Diameter mm
610
710
810
915
7
6
344
(13.5)
T WIFLEX
TYPE GMX
BRAKE CALIPER
GMX
GMX
TWIFLEX
TWIFLEX
T WIFLEX
TYPE GMX
BRAKE CALIPER
5
4
3
2
1
0
0
GMXH
200
300
400
500
600
700
800
Braking Torque Nm
stroke = 64ml
160
(6.3)
223 (8.8)
100
Disc Diameter mm
610
710
810
915
900
Force on Lever – N
800
500
(19.7)
700
600
500
400
300
200
100
T WIFLEX
TYPE GMX
BRAKE CALIPER
0
100
1000
1500
2000
2500
3000
3500
GMX
Braking Torque Nm
Maximum Braking Force = 8.3kN @ 0.9kN force on lever
GMX
TWIFLEX
160
(6.3)
215 (8.5)
GMXW
0
TWIFLEX
T WIFLEX
TYPE GMX
BRAKE CALIPER
75
(2.9)
Disc Diameter mm
610
710
810
915
1800
1600
340
(13.4)
Force – N
1400
1200
1000
800
600
T WIFLEX
TYPE GMX
BRAKE CALIPER
400
T WIFLEX
TYPE GMX
BRAKE CALIPER
200
GMX
TWIFLEX
0
0
100
200
300
400
500
600
700
800
900
1000
GMX
TWIFLEX
Braking Torque Nm
227 (8.9)
160
(6.3)
Weight of caliper and hand wheel assembly - 10.52kg
24
Twiflex +44 (0) 20 8894 1161
P-1648-TF
11/10
GMX Series
GMXEA
Spring Applied - Electrically Released, Self Adjusting
The EA actuator is a spring applied, electrically
released unit designed for use with the Twiflex GMX
range of disc brake calipers. A 175W pancake motor
drives a ball screw mechanism, retracting the brake.
267
A217683
A feature of the unit is a patented self-adjusting
mechanism which maintains a constant air gap (and
consequently braking force) between pad and disc
as the pads wear.
412
TWIFLEX
TYPE GMX
BRAKE CALIPER
The assembly is contained in a rugged, cast
aluminum housing, designed for service in the
harshest environments, which mounts directly to one
arm of the GMX caliper.
GMX
TWIFLEX
225
102
Maximum Braking Force = 6kN
Weight of caliper and actuator - 17.9kg
247
79
Weight actuator only - 8.7kg
Weight of controller - 5.5kg
The GMXEA is supplied complete with a solid state
controller, suitable for all AC supply voltages, which
converts the supply to the required DC output for the
pancake motor. A 24VDC unit is also available. The
brake is released when power to the controller is
switched on, and applied when power is
disconnected. Controlled application of the brake
occurs, electrically damped by using the motor back
E.M.F. and a damping resistor.
The controller is housed in a strong, steel, wall
mounted enclosure (215mm x 215mm x 150mm
deep), protected to IP44 as standard (higher rating
on request).
Braking force adjustable to 50% of maximum.
P-1648-TF
11/10
Twiflex +44 (0) 20 8894 1161
25
GMX Series
GMXS
Disc Diameter mm
610
710
810
915
0
402
(15.8)
T WIFLEX
TYPE GMX
BRAKE CALIPER
GMX
T WIFLEX
TYPE GMX
BRAKE CALIPER
GMX
TWIFLEX
4
5
0
610
710
810
1000
2000
3000
4000
5000
6000
full retraction = 1.19 l
915
Disc Diameter mm
0
1
3
6
TWIFLEX
Disc Diameter mm
0
2
A
XS 9.6 296.5
XS 7.5 285.5
XS 4.6 285.5
ø196
(ø 7.7)
A
1
2
3
4
5
610
710
810
915
1
2
3
0
500
1000
1500
2000
2500
3000
3500
4000
4500
0
500
1000
1500
GMXSH
2000
2500
3000
Disc Diameter mm
610
710
810
915
0
374
(14.7)
T WIFLEX
TYPE GMX
BRAKE CALIPER
T WIFLEX
TYPE GMX
BRAKE CALIPER
10
20
30
40
50
60
GMX
GMX
TWIFLEX
TWIFLEX
XSH 9.6
XSH 7.5
XSH 4.6
160
(6.3)
A
Disc Diameter mm
610
710
810
70
A
330
305
305
0
2000
3000
4000
5000
6000
retraction = 9.1ml
915
Disc Diameter mm
0
0
610
710
810
915
5
10
1000
20
30
40
50
10
15
20
25
30
60
0
500
1000
1500
2000
2500
3000
3500
4000
4500
35
0
6mm retraction = 9.1ml
0
500
1000
1500
2000
2500
3000
6mm retraction = 9.1ml
26
Twiflex +44 (0) 20 8894 1161
P-1648-TF
11/10
GMR Series
GMR
Disc Brake Caliper
C
3 holes ø 0.67
(M16-148 lb.ft.)
Normally one or two calipers are used per disc, but the number
may be increased depending on disc size. The brakes may be
positioned at any angle around the periphery of the disc, but
should ideally be mounted horizontally (i.e. at the 3 o’clock or 9
o’clock position). If the caliper mounting angle is greater than
10° from the horizontal, or on vertical shaft applications, it
should be fitted with an inclined mounting kit. A range of brake
discs is available from Twiflex (see Disc and Hub Assemblies).
170
(6.7)
40 (1.58)
to disc
edge
44
(1.7)
A
170 (6.7)
B
The ratings shown on the graphs are based on fully bedded in
μ = 0.4. Twiflex disc brakes must be used with Twiflex asbestos
free brake pads.
300 (11.8)
GMR25
GMR40
GMRP
The Twiflex GMR and GMR40 series of disc brake calipers is
suitable for use with discs of 25.4mm, and 40mm thick
respectively. Minimum disc diameter is 610mm.
A
25
40
B
212
223
C
24
29
Disc Diameter mm
610
760
915
1220
1370
1525
1830
25
30
7
6
+
+
+
+
467
5
4
3
2
1
0
0
5
10
15
20
Braking Torque kNm
A
Volume displacement of thruster at full stroke = 1.8 l
300
B
A
GMRP 212
GMR40P 223
GMRH
B
306
312
Hyraulically Applied – Spring Released
Disc Diameter mm
610
760
915
1220
1370
1525
1830
25
30
140
+
+
+
+
120
381
100
80
60
40
20
0
0
5
10
15
20
Braking Torque kNm
A
B
GMR P
GMR40 P
A
212
223
B
306
312
300
A
GMRH 212
GMR40H 223
B
332
343
P-1648-TF
11/10
Twiflex +44 (0) 20 8894 1161
27
GMR Series
GMRS
Disc Diameter mm
610
760
915
1220
1370
1525
1830
0
+
+
+
+
465
2
4
6
8
0
4
8
12
16
20
24
28
32
Braking Torque kNm (S 15.6)
A
A
GMRS 212
GMR40S 223
300
Maximum Braking Force S 15.6: 36kN
Volume displacement of thruster at full retraction = 1.3 l
B
376
382
B
Disc Diameter mm
610
760
915
1220
1370
1525
Disc Diameter mm
1830
0
1
760
915
1220 1370
1525
Disc Diameter mm
1830
610
760
915
1220
1370 1525
1830
0
2
3
4
5
1
610
0
2
3
0
5
10
15
20
25
3
4
0
2
4
6
8
10
12
14
16
18
20
22
0
2
4
6
8
10
12
14
16
18
Braking Torque kNm (S 11)
Maximum Braking Force S 12.9: 30kN
GMRSD
2
4
5
6
1
Maximum Braking Force S 11: 25kN
Maximum Braking Force S 8.4: 19.5kN
Disc Diameter mm
610
760
915
1065 1220
1370 1525
1830
+
0
+
+
+
470
1
2
3
4
0
4000
8000
12000
16000
20000
24000
28000
32000
Braking Torque Nm (SD 15.6)
A
A
GMRSD 212
GMR40SD 223
300
B
451
457
Maximum Braking Force SD 15.6: 36kN
B
Disc Diameter mm
610
760
915
1220
1370
1525
Disc Diameter mm
1830
610
760
915
1220
1370
1525
Disc Diameter mm
1830
610
760
915
1065 1220 1370 1525
1830
0
0
0
2
0.5
1
1
1.5
0.5
1
1.5
2
3
2
2.5
0
5
10
15
20
25
Braking Torque kNm (SD 12.9)
Maximum Braking Force SD 12.9: 30kN
0
2
4
6
8
10
12
14
16
18
20
22
Braking Torque kNm (SD 11)
Maximum Braking Force SD 11: 25kN
0
3000
6000
9000
12000
15000
18000
Braking Torque Nm (SD 8.4)
Maximum Braking Force SD 8.4: 19.5kN
28
Twiflex +44 (0) 20 8894 1161
P-1648-TF
11/10
GMR Series
GMRSH
Spring Applied – Hydraulically Released
Disc Diameter mm
610
760
915
1065
1220
1370
1525
1830
25
30
+
0
+
+
+
434
20
40
60
80
100
0
5
10
15
20
Braking Torque kNm (SH 15)
A
Maximum Braking Force SH 15: 35kN
Volume displacement of thruster at full retraction = 56ml
300
B
A
GMRSH 212
GMR40SH 223
Disc Diameter mm
610
760
915
1065
1220
1370
B
380
387
1525
Disc Diameter mm
1830
610
760
915
1065
1220
1370
1525
8
10
12
14
16
18
20
40
60
80
100
20
40
60
80
0
5
10
15
20
25
0
2
4
6
Braking Torque kNm (SH 12.9)
Disc Diameter mm
610
760
915
1065 1220
1370
1525
22
Maximum Braking Force SH 11: 25kN
1830
Disc Diameter mm
610
0
4
760
915
1065
1220
1370
1525
1830
0
0
10
20
Maximum Braking Force SH 12.9: 30kN
20
30
40
50
10
20
30
40
50
60
0
2
4
6
8
10
12
14
16
18
20
2
6
Maximum Braking Force SH 8.4: 19.5kN
Disc Diameter mm
610
760
915
1065 1220 1370
1525
8
10
12
14
Maximum Braking Force SH 7: 16.5kN
Disc Diameter mm
1830
0
610
760
915
1065
1220
1370
1525
1830
0
1830
0
0
10
20
30
5
10
15
20
0
2
4
6
8
10
Maximum Braking Force SH 4.5: 10.5kN
0
1
2
3
4
5
Maximum Braking Force SH 2.5: 6kN
P-1648-TF
11/10
Twiflex +44 (0) 20 8894 1161
29
Modular Series
Pneumatically or Hydraulically Applied
Disc
Diameter mm 150
Mounting plate the
same as disc thickness
31.8
(1.25)
31.8
(1.25)
200
250
300
350
400
300
350
460
515
610
20
50.8
(2.0)
34
(1.34)
10 (0.4)
to disc edge
2 holes
ø8.5 (ø.33)
M8-23 Nm
(M8-17 lb.ft.)
Air/Oil Pressure – bar
T2
2.0 66
(0.08) (2.6)
15
10
5
0
0
1 hole
ø11 (ø.43)
50
100
150
200
250
400
450
500
550
Braking Torque Nm
Maximum Braking Force = 2kN @ 20 bar oil or air pressure
Weight of caliper - 0.75kg
Volume displacement per 1mm stroke = 3ml
The Twiflex T2 disc brake caliper is split caliper design suitable for use
with a minimum disc thickness of 5mm. The modules are mounted
each side of a central mounting plate of the same thickness as the
brake disc. Minimum disc diameter is 120mm. Alternatively, the brake
may be side-mounted with a spacer equal to the disc thickness
between the two halves.
For pneumatic operation, use dry and filtered compressed air.
Pneumatic brakes require a control valve, operated either manually or
by pneumatic or electrical signal.
any angle around the periphery of the disc, but should ideally be
mounted horizontally (i.e. at the 3 o’clock or 9 o’clock position). A
range of brake discs is available from Twiflex (see Disc and Hub
Assemblies).
The ratings shown on the graph are based on fully bedded in and
conditioned brake pads with a nominal friction coefficient μ = 0.4.
Twiflex disc brakes must be used with Twiflex asbestos free brake
pads.
Normally one or two calipers are used per disc, but the number may
be increased depending on disc size. The brakes may be positioned at
T20
Hydraulically Applied
Disc Diameter mm 300 350 400 460 515
112
(4.4)
2 holes
ø13
(m12 87 Nm)
74
(2.9)
610
710
810
910
100
21 (0.83)
to disc
edge
80
60
40
20
0
0
108 (4.25)
Clearance for
pad removal
134 (5.3)
80 (3.1)
128 (5.0)
The standard Twiflex T20 disc brake caliper is split caliper design
suitable for use with a minimum disc thickness of 12.7mm. Optionally,
the caliper may be supplied in a modified form for use with a minimum
disc thickness of 8mm. Normally the brake is side mounted, however,
for use with a disc thickness greater than 20mm, the split design
allows the modules to be mounted each side of a central mounting
plate of the same thickness as the brake disc. Minimum disc diameter
is 300mm.
1
2
3
4
5
6
7
8
9
Braking Torque kNm
Volume displacement per 1mm stroke at each pad = 4.8ml
be increased depending on disc size. The brakes may be positioned
at any angle around the periphery of the disc. A range of brake discs
is available from Twiflex (see Disc and Hub Assemblies).
pads. Effective disc radius = actual radius (m) – 0.032m.
30
Twiflex +44 (0) 20 8894 1161
P-1648-TF
11/10
Modular Series
T40
Hydraulically Applied
Disc Diameter mm
610
760
915
1065 1220 1370
1525
1830
100
I WI F L E X
I 40
2 Holes Ø25
(M24 675Nm)
80
24 (0.95)
To disc edge
167 (6.6)
60
40
20
105 (4.1)
Pad Removal
0
0
5
10
15
20
25
30
35
40
Braking Torque kNm
134 (5.3)
175 (6.9)
180 (7.0)
185 (7.3)
The Twiflex T40 disc brake caliper is split caliper design suitable for
use with a minimum disc thickness of 20mm. The modules are
mounted each side of a central mounting plate of the same thickness
as the brake disc. Minimum disc diameter is 300mm.
be increased depending on disc size. The brakes may be positioned
Volume displacement per 1mm stroke at each pad = 15ml
at any angle around the periphery of the disc. A range of brake discs
is available from Twiflex (see Disc and Hub Assemblies).
pads. Effective disc radius = actual radius (m) – 0.045m.
P-1648-TF
11/10
Twiflex +44 (0) 20 8894 1161
31
Modular Series
VCSMk4
Mounting Plate thickness to
be the same as disc thickness
108 (4.25)
182 (7.17)
144 (5.67)
104 (4.10)
62
(2.4)
M16 Hex
Head Bolts
Grade 8.8
M24 Hex
Head Bolts
Grade 8.8
85
(3.35)
66
(2.6)
Caliper
Type
Disc/Pad
Air Gap
mm
Braking
Force
kN
Minimum
Pressure for Full
Retraction bar
VCS70
VCS60
VCS50
VCS40
VCS30
1.7
2.0
2.0
2.0
2.0
62
53
44
35
25
160
148
131
113
94
Weight of caliper (2 modules) - 50kg
Volume displacement per 1mm stroke at both pads = 21ml
Disc
Thickness
1/4 BSPP
Drain Ports
Adjustment for
Pad Wear
1/4 BSPP Inlet Port
213 (8.39)
426 +
Disc Thickness
Braking force ratings are achieved through a combination of
shim number and air gap setting. Spring fatigue life is a
function of the caliper rating.
The Twiflex VCS Mk4 disc brake caliper is comprised of two
halves, or spring modules, and is suitable for use with a
minimum disc thickness of 20mm. The modules are mounted
each side of a central mounting plate of the same thickness as
the brake disc. Minimum disc diameter is 500mm.
The ratings shown in the table are based on fully bedded in
number may be increased depending on disc size. The brakes
may be positioned at any angle around the periphery of the
disc, but should ideally be mounted horizontally (i.e. at the 3
o’clock or 9 o’clock position). A range of brake discs is
VCS-FL
300 (11.8)
144 (5.7)
Mounting Bracket
64 (2.5)
165
(6.5)
83 (3.3)
Bleed
Port
236
(9.3)
1/4" Port for
Hydraulic Feed
Disc
Thickness
290.5 (11.4)
The Twiflex VKCS-FL disc brake caliper comprises a single
spring module forming the ‘active’ side of this floating unit and
is available for use where space is limited or to accommodate
axial disc float of ±6mm.
shim number and air gap setting. Spring fatigue life is a
function of the caliper rating.
32
Twiflex +44 (0) 20 8894 1161
P-1648-TF
11/10
Modular Series
VKSD
323
(12.7)
343
(13.5)
DRG No A01165
CAD No 101
DRG No A01225
CAD No 105
DRG No A01253
CAD No 107
DRG No A01165
CAD No 101
DRG No A01225
CAD No 105
DRG No A01253
CAD No 107
Clearance for pad
removal either side
345
(13.6)
251
(9.9)
The Twiflex VKSD disc brake caliper is comprised of two halves, or
spring modules, and is suitable for use with a minimum disc thickness of
20mm. The modules are mounted each side of a central mounting plate
12mm thicker than the brake disc. Minimum disc diameter is 1000mm.
Normally one or two calipers are used per disc, but the number may be
increased depending on disc size. The brakes may be positioned at any
angle around the periphery of the disc, but should ideally be mounted
horizontally (i.e. at the 3 o’clock or 9 o’clock position). A range of brake
discs is available from Twiflex (see Disc and Hub Assemblies).
Caliper
Type
Disc/Pad
Air Gap
mm
Braking
Force
kN
Minimum
Pressure for Full
Retraction bar
VKSD119
VKSD112
VKSD104
VKSD96
VKSD88
VKSD80
VKSD71
VKSD62
VKSD58
VKSD53
VKSD47
VKSD41
VKSD34
VKSD28
2
2
2
2
2
2
2
2
2
2
2
2
2
2
119
112
104
96
88
80
71
62
58
53
47
41
34
28
138
131
124
116
108
100
92
83
63
58
53
47
41
34
Braking force ratings are achieved through a combination of different
springs, shims and air gap settings. Spring fatigue life is a function of the
caliper rating.
The ratings shown in the table are based on fully bedded in and
Twiflex disc brakes must be used with Twiflex asbestos free brake pads.
VKSD-FL
386
(15.2)
409
(16.1)
328
(12.9)
86
(3.4)
The Twiflex VKSD-FL disc brake caliper comprises a single
spring module forming the ‘active’ side of this floating unit
and is available for use where space is limited or to
accommodate axial disc float of ±6mm.
different springs, shims and air gap settings. Spring fatigue
life is a function of the caliper rating.
P-1648-TF
11/10
Twiflex +44 (0) 20 8894 1161
33
Modular Series
VKHD
Hydraulically Applied – Spring Released
Disc Diameter mm
209
(8.3)
1000
1200
1600
2000
2500
100
344
(13.5)
80
60
40
20
0
252
(9.9)
354
(13.9)
Clearance for pad removal
(either side)
The Twiflex VKHD disc brake caliper is comprised of two
halves, or hydraulic modules, and is suitable for use with a
minimum disc thickness of 20mm. The modules are mounted
each side of a central mounting plate 12mm thicker than the
brake disc. Minimum disc diameter is 1000mm.
may be positioned at any angle around the periphery of the
disc, but should ideally be mounted horizontally (i.e. at the 3
VSMk2
0
20
40
60
80
100
120
140
Braking Torque kNm
o’clock or 9 o’clock position). A range of brake discs is
The ratings shown on the graph are based on fully bedded in
398
(15.7)
85
(3.3)
373
(14.7)
600
(23.6)
Caliper
Type
Disc/Pad
Air Gap
mm
Braking
Force
kN
Minimum
Pressure for Full
Retraction bar
VS230
VS205
VS190
VS175
VS155
VS137
VS100
4
4
4
4
4
4
4
185
165
153
141
125
111
81
180
163
154
144
131
108
84
Weight of caliper = 410kg
The Twiflex VS Mk2 disc brake caliper is comprised of two
modules secured between U-shaped top and bottom
mounting plates by tie rods.
Typically one or two calipers are used per disc, but the
may be positioned at any angle around the periphery, but
ideally mounted horizontally (at the 3 o’clock or 9 o’clock
positions).
Minimum disc diameter is 1000mm with no maximum except
for practical limitations. The standard caliper can
accommodate disc thicknesses from 38mm to 50mm consult Twiflex for discs thicker than 50mm.
A tandem caliper arrangement is available sharing a common,
central, mounting plate; minimum disc diameter is 2000mm
The ratings shown on the tables are based on fully bedded in
Note: Spring fatigue life is a function of the caliper rating.
34
Twiflex +44 (0) 20 8894 1161
P-1648-TF
11/10
V H
W I F LE X
Modular Series
VH
Disc Diameter mm
373 (14.7)
1200
1600
2000
2500
140
Clearance for
pad removal
V H
W I F LE X
500
(19.7)
120
100
800
60
40
20
0
0
50
100
150
200
250
300
350
Braking Torque kNm
Weight of caliper - 287kg
Volume displacement per 1mm stroke at both pads = 51.7ml
493 (19.4)
accommodate disc thicknesses from 38mm to 50mm consult Twiflex for discs thicker than 50mm.
for practical limitations. The standard caliper can
VMH2
A tandem caliper arrangement is available sharing a common,
central, mounting plate; minimum disc diameter is 2000mm
A011843
Typically one or two calipers are used per disc, but the
may be positioned at any angle around the periphery, but
ideally mounted horizontally (at the 3 o’clock or 9 o’clock
positions).
TWIFLEX
The Twiflex VH disc brake caliper is comprised of two
modules secured between U-shaped top and bottom
mounting plates by tie rods.
Disc Diameter mm
1500
2000
2500
3000
100
A011843
TWIFLEX
555
(22.0)
440 (17.3)
329 (12.9)
80
60
40
20
0
0
100
200
300
400
500
600
Braking Torque kNm
570
(22.4)
each side
The Twiflex VMH2 disc brake caliper is comprised of two
modules bolted to a central mounting plate, 12mm thicker
than the brake disc. Minimum disc thickness is 38mm and
minimum disc diameter is 1500mm with no maximum except
for practical limitations.
Weight of caliper ( 2 modules ) - 580kg
Volume displacement per 1mm stroke at both pads = 101.5ml
Typically one or two calipers are used per disc, positioned at
any angle around the periphery, but the number may be
increased depending on disc size.
P-1648-TF
11/10
Twiflex +44 (0) 20 8894 1161
35
Modular Series
VMS3SPS
460
(18.1)
440
(17.3)
555
(21.9)
155
(6.1)
160
(6.3)
570
(22.4)
Space for pad removal
The Twiflex VMS3-SPS disc brake caliper is comprised of two modules bolted to
a central mounting plate, 12mm thicker than the brake disc. Minimum disc
thickness is 38mm and minimum disc diameter is 1500m with no maximum
except for practical limitations. Based on a development of the earlier Twiflex
VMS2-SP disc brake, the VMS3-SPS provides a significant increase in braking
force but in a similarly sized package.
Infinite fatigue life (>2 x 106 cycles) is achievable for most units at the 3mm air
gap shown in the table and possible, by reducing this setting, for the higher
rated brakes – contact Twiflex for further information.
Caliper
Type
Disc/Pad
Air Gap
mm
Braking
Force
kN
Minimum
Pressure for Full
Retraction bar
VMS3 SPS276
VMS3 SPS268
VMS3 SPS260
VMS3 SPS252
VMS3 SPS244
VMS3 SPS236
VMS3 SPS227
VMS3 SPS219
VMS3 SPS211
VMS3 SPS202
VMS3 SPS194
VMS3 SPS185
VMS3 SPS177
VMS3 SPS168
VMS3 SPS159
VMS3 SPS150
VMS3 SPS141
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
276
268
260
252
244
236
227
219
211
202
194
185
177
168
159
150
141
158
154
149
145
141
137
132
128
124
119
115
110
106
101
96
91
87
Weight of Caliper (2 Modules) = 675kg
The braking force is a function of both the air-gap setting and the thickness of
the shim pack (if used) but may be also controlled using hydraulic back pressure
during braking.
The ratings shown on the tables are based on fully bedded in and conditioned
brake pads with a nominal friction coefficient μ = 0.4. Twiflex disc brakes must
be used with Twiflex asbestos free brake pads.
VMS2
415 (16.3)
440 (17.3)
558
(22.0)
TWIFLEX
A011843
Caliper
Type
Disc/Pad
Air Gap
mm
Braking
Force
kN
Hydraulic
Pressure for Full
Retraction bar
VMS392
VMS356
VMS320
VMS283
VMS245
VMS206
VMS167
3
3
3
3
3
3
3
392
356
320
283
245
206
167
210
197
184
167
154
138
122
Weight of Caliper (2 Modules) = 670kg
570
(22.5)
The Twiflex VMS2 disc brake caliper is comprised of two
modules bolted to a central mounting plate, 12mm thicker
than the brake disc. Minimum disc thickness is 38mm and
minimum disc diameter is 1500mm with no maximum except
for practical limitations.
Typically one or two calipers are used per disc, positioned at
any angle around the periphery, but the number may be
increased depending on disc size.
The braking force is a function of both the air-gap setting and
the thickness of the shim pack used (see table) but may be
also controlled using hydraulic back pressure during braking.
The ratings shown on the tables are based on fully bedded in
36
Twiflex +44 (0) 20 8894 1161
P-1648-TF
11/10
Modular Series
VMSDP
90
(3.5)
835
(32.9)
994
(39.1)
Shim
Pack
467 (18.4)
Fully Retracted
0
1
2
3
817
(32.2)
Braking
Minimum
Force Pressure for Full
kN
Retraction bar
590
639
688
737
169
181
192
204
Spring
Life
Cycles
>100000
>100000
>20000
>20000
Weight of caliper = 1887Kg
Volume displacement per 2mm stroke = 174ml
155
(6.1)
143
(5.6)
330
(13.0)
Space for pad removal
Similar to the Twiflex VMS2 disc brake, the VMS-DP
comprises 2 spring modules; this time mounted in a common
housing to form the ‘active’ side of a floating brake caliper.
This arrangement allows the assembly to accommodate
±10mm of axial disc movement.
for practical limitations. Disc thickness for the standard caliper
range from 117mm to 130mm with the mounting bracket
being machined accordingly.
The VMS-DP is primarily intended to function as a holding
brake, but may be used for a dynamic duty where spring life is
not a consideration (for example, occasional emergency
stopping).
The braking force is a function of both the air-gap setting and
the thickness of the shim pack used (see table) but may be
also controlled using hydraulic back pressure during braking.
P-1648-TF
11/10
Twiflex +44 (0) 20 8894 1161
37
Disc and Hub Assemblies
Brake Discs
12.7mm thick brake discs
B
D
A
Nominal
Diameter
A
B
C
D
Min.
Inertia
kgm2
Weight
kg
Max.
Safe Disc
Speed
250
300
350
400
460
515
610
710
810
915
250
305
356
406
457
514
610
711
813
914
128
166
210
260
311
368
464
565
660
762
36
41
54
54
54
54
54
54
54
54
30
51
76
102
102
102
102
102
102
102
0.04
0.09
0.17
0.28
0.48
0.75
1.57
3.20
6.57
10.80
4.0
7.3
10.9
14.1
19.1
22.7
33.0
52.3
85.5
110.9
6500
6000
5100
4400
3900
3500
2900
2500
2200
1900
All dimensions in mm
25.4mm thick brake discs
C
Twiflex brake discs may be supplied bored and
drilled to customer requirements. Non-standard
disc sizes, not shown in the tables, can be
supplied to order. Brake discs are manufactured
from spheroidal graphite iron.
Nominal
Diameter
A
B
C
D
Min.
Inertia
kgm2
Weight
kg
Max.
Safe Disc
Speed
610
760
915
1065
1220
1370
1525
1830
610
762
914
1067
1219
1372
1524
1829
343
495
648
800
914
1067
1219
1524
76
76
76
76
76
76
76
76
125
125
230
230
230
*
*
*
2.75
7.0
16.0
29.1
49.1
80.1
120.5
243.5
66
104
150
220
273
346
393
522
2900
2300
1900
1600
1400
1200
1100
1000
All dimensions in mm
* Bores cast and machined to order
Hubs
C
A
Range of Hubs used with Twiflex Brake Discs
B*
Hub
Size
A
B*
C
Disc
Size
Max. Brake
Torque
(kNm)
WR2
(kgm2)
112
168
240
330
370
99
146
200
272
308
14-42
28-65
60-95
75-130
90-150
58
87
117
155
176
250
300
400
400
501
1.1
3.6
9.5
24.0
30.0
0.00097
0.0088
0.044
0.23
0.35
* Hubs can be supplied with parallel or taper bores, and keywayed to order, at extra cost.
Hubs are manufactured from steel 080M40.
38
Twiflex +44 (0) 20 8894 1161
P-1648-TF
11/10
Monitoring Units
Twiflex offers a wide range of monitoring options for both
caliper and modular brake types. This includes a number of
IP67-rated inductive and analogue proximity sensors for brake
status or pad condition.
In addition, electro-mechanical and limit switches are available
as single or multi-function units and may be supplied fully
sealed, with positive action safety switches.
Monitoring units are used to indicate:
• Brake on or off, or the fully retracted condition reached
• Adjustment for pad wear required
• Pad replacement needed
• Any combination of the above
Materials, Traceability & Finishes
Twiflex Ltd. is approved to BS EN ISO 9001:2000, by Lloyds
Registry of Quality Assurance. The scope of Twiflex Ltd Quality
System embraces all procedures and controls from quotation
to delivery of industrial disc brakes.
Materials
All materials are obtained from Twiflex approved suppliers.
Twiflex discs and brake housings, unless otherwise stated, are
made from Spheroidal Graphite Iron and actuator housings
from cast aluminium.
P-1648-TF
11/10
Traceability
We can offer, at customer’s request, component traceability
through Lloyds. In special circumstances we can also offer
traceability through the American Bureau of Shipping (ABS),
Det. Norske Veritas (DNV), and other recognized authorities.
Finishes
Twiflex can offer a range of finishing processes, depending
upon the degree of protection required. Disc brake assemblies
requiring full environmental protection are built using stainless
steel, hard chrome plating and marine paint.
Twiflex +44 (0) 20 8894 1161
39
Twiflex has consolidated decades of development to
produce a range of electro-hydraulic power units to meet
most application requirements. Each power unit has been
designed for reliability, high performance and low
maintenance, and is supplied with a comprehensive
LC
Electro Hydraulic Power Units
The "LC" range of stand alone power units is designed to
operate the Twiflex range MR, MX, GMX, GMR and VCS
spring applied hydraulically released brakes, providing a
basic brake on/off control. There are various options
available including "soft braking", a range of operating and
motor voltages, and various add-on accessories including a
terminal box.
MP
40
easy-to-read installation, operation and maintenance manual.
The Twiflex datasheets contain user guides giving a
step-by-step selection process. Contact Twiflex application
engineers to discuss your requirements in detail.
The "soft braking" option is available as an additional
manifold slice to facilitate a fast approach, soft braking
system. This enables rapid closing of the pad/disc air gap
followed by controlled application of braking force up to full
torque. Refer to data sheet DS3001.
Electro Hydraulic Power Units
The modular “MP” range of
electro-hydraulic power
packs has been designed
to provide a completely
flexible means of brake
control in the most arduous
operating environments.
The hydraulic circuit is then selected, based on the operation
and control logic required by the application and may range
from a simple ‘on/off’ function to full closed loop PLC
control. Finally, auxiliary options are specified (for example,
hand pump for manual caliper release; heater for low
ambient temperatures; stainless steel components for marine
environments, etc.).
The units are composed of
one of three base modules,
dictated by the size and
number of calipers to be
controlled, comprising
motor, pump and reservoir.
The “MP” solution is especially useful when the application
requires independent control of multiple brake circuits.
Twiflex +44 (0) 20 8894 1161
Refer to data sheet DS3002 or contact Twiflex for more
details.
P-1648-TF
11/10
There are many factors to take into account when determining
what type of brake to use on any particular machine. For
example, what is the function of the brakes? Are there any
external loads? Are there any time delays?
The primary consideration should be to answer the question:
“What do you want the brake to do?”
The application will often fall into one of three main types:
• Holding Brakes
In such static applications a suitable factor should always be
used to compensate for the possibility of foreign matter
contaminating the disc surface, loss of conditioning of the
brake pad surface, and to provide an appropriate safety
margin, depending on pad material, statutory or other
requirements.
emergency braking function. Basic calculations should, in
these cases, include an assessment of operating
temperature, power dissipation (to ensure that the pads are
maintained in good condition), and expected pad life.
• Tension (Continuous Duty) Brakes
This application arises when the brake is called upon to
provide a continuous torque or tension on material passing
through the machine, for example on tension reels. Special
considerations are required to ensure adequate pad life.
Braking calculations are fundamental to good brake selection.
The following calculations are intended only as a guide for
those wishing to make their own selection. For a more
detailed analysis of a proposed braking system, Twiflex
Application Engineers can assist in providing details of all
expected operating characteristics using specialist software.
• Dynamic and Emergency Brakes
In a dynamic application the brake must stop all of the
moving parts of the machine. Often this function is asked for
in conjunction with the holding requirements as an
Defintion of Braking Terms
Clamping Force (Fn) is the force pressing each brake pad
against the disc.
Braking Force (Fb) is the tangential friction force acting
between the brake pads and disc.
Fb = 2 . μ . Fn
Where: μ is the coefficient of friction between the
pad and the disc (a nominal value of 0.4 is assumed
for fully conditioned pads of standard material).
Braking Torque (Tb) is the moment of braking force about the
center of rotation.
Tb = Fb . re
Where re is the effective disc radius.
Calculated braking torques for the range of Twiflex
brake calipers are shown in the brochure for a range of
standard disc sizes.
P-1648-TF
11/10
Twiflex +44 (0) 20 8894 1161
41
Definition of Symbols and Units
It is important, when making calculations, that a
consistent set of units is used.
Symbols and units
ωm
ω
J
m
TB
TL
Maximum disc speed
Deceleration during braking
Total inertia referred to braked shaft
External load
Total braking torque
Load torque (out-of-balance torque)
[rad/sec]
[rad/sec2]
[kgm2]
[kg]
[Nm]
[Nm]
TJ
TF
tb
td
ts
g
Inertia Torque
Friction torque
Braking time
Delay time for brake signal
Overall stopping time
Acceleration due to gravity
[Nm]
[Nm]
[sec]
[sec]
[sec]
[m/sec2]
Basis of Brake Calculation
The fundamentals of braking calculations are to ensure that:
The total braking torque is defined as follows:
• There is sufficient torque to stop and hold the machine
at rest
TB = TJ + TL - TF
• For dynamic stops, the power dissipation is acceptable for
the area of the brake pads being used
• The operating temperature of the brake disc is controlled,
to avoid brake fade and reduced performance
Generally the effects of friction can be ignored for a
conservative estimate of the required braking torque.
It is important, in all cases of dynamic braking, that the
inertia of all of the moving parts is referred to the braked
shaft when calculating TJ (see below).
The basic data needed to make an initial calculation are any
out-of-balance forces acting on the machine, and the total
inertia of the moving parts of the machine.
Brake Calculation
Basic braking calculations are derived from simple
mechanics. Both the effects of out of balance loads and the
torque needed to stop the inertia in the desired way need to
be calculated.
Load torque TL
Where the machine has any out-of-balance load applied
the effective out-of-balance torque must be calculated. In
the case of a suspended load, for example this is simply
given by
TL = m . g . r [Nm]
42
Twiflex +44 (0) 20 8894 1161
where r is the radius at which the load acts (based on drum
diameter, reel diameter etc.) The brake will need to overcome
this load before it can start to slow down the machine; (it is
assumed that the out of balance opposes the action of the
brake). If the load is at rest, the static brake torque will
prevent the load from moving. In practice a safety factor
should be used in the case where the brake is called upon
only to hold this load and is only infrequently used in a
dynamic manner. In these cases a service factor of 2 is
recommended to allow for external environmental
conditions, i.e. the brake should be rated to give twice
this calculated value.
P-1648-TF
11/10
With some types of machines, such as downhill conveyors or
escalators, a component of the load acts in the direction of
motion. In these cases the following equation should be used:
For the winding drum the following well established formula
can be used for an initial estimate (can also be used for flat
discs):
TL = m . g . r . sin ø [Nm]
J = π ρ I ( D4 - d4 ) / 32 [kgm2]
Where ø is the angle of the motion to the horizontal. In cases
where the load does not produce a direct torque on the
braked shaft (eg. there is a gearbox between the loaded shaft
and the brake) the load torque should be calculated
accordingly.
Where l is the length of the drum,
In cases of dynamic braking, where the load torque is not
constant, for example on wind turbines where the
aerodynamic load varies with the speed of the machine, then
the equation for TL becomes complex and it is recommended
that selection should be referred to Twiflex.
Inertia torque TJ (dynamic braking only)
Having overcome the external forces additional braking torque
is required to stop all the moving parts of the machine. This
additional torque is calculated as follows:
•
TJ = J . ω
[Nm]
In this equation the deceleration required can readily be
calculated from the braking time.
•
ω = ω / tb
In some special cases more precise calculation of speed and
time may be required.
The moment of inertia of the system (J) should represent all
moving parts. For example, in a hoist calculation allowance
should be made to include the motor, brake disc, gearbox,
winding drum, ropes, load etc. again with a suitable allowance
for any mechanical advantage at various parts of the system.
D is the outside diameter
d is the inside diameter and ρ is the density of the material
(7840 kg/m3 for steel)
The inertia of the motor should also be included in the
calculations. These values can be estimated but should ideally
be obtained directly from the manufacturer.
Note: All inertia must be referred to the brake shaft.
For example, if the brake is positioned on the low speed shaft
of a machine (gearbox output shaft) then all calculated inertia
values (motor, couplings, etc.) must be referred to this shaft.
When referring inertia JB from one shaft with speed ωB to
another shaft with speed ωA use:
JA = JB ( ωB / ωA )2
Special requirements
In certain cases there are other direct considerations to be
applied when making braking calculations.
In mine hoists the service factor for holding is defined, as are
allowable levels of deceleration, especially when manriding.
For escalators, allowable stopping distances or even rates of
deceleration may be defined in local standards.
Twiflex is able to offer assistance with calculations in such
special cases.
The effective inertia of the load is given simply as:
J = m . r2 [kgm2]
P-1648-TF
11/10
Twiflex +44 (0) 20 8894 1161
43
Other Considerations
To optimise braking performance there are other
considerations which must be taken into account.
Rubbing speed
For high-speed applications a further consideration is the
linear speed at which the disc is passing between the pads
when the brake operates. This is important and is usually
measured at the effective radius.
Thus the rubbing speed is given as:
Rubbing speed = ωm . re (m/s)
In general a maximum speed of 30m/s is recommended for
standard brake pad materials. Above this value it is likely that
the effective coefficient of friction will be reduced leading to a
reduction in braking performance. For certain applications
where the rubbing speed is particularly high (up to 100m/s)
special pads manufactured from sintered materials are
available. Refer to Twiflex for details.
Operating temperatures
During a dynamic application of a brake the energy of the
machine will be converted to heat, generated between the
pad and the disc. It is the temperature of the disc surface
that is normally used to assess the brake performance.
Failure to take account of the peak temperature can lead to
a reduced braking performance due to the onset of brake
fade. With standard brake pads a peak temperature of
250°C has been found to be acceptable, although in certain
cases higher temperatures might be permitted. In the case
where sintered pads are used peak temperatures in excess
of 600°C are possible. The operating temperature also
determines pad wear. The higher the temperature, the
greater the wear rate of the pads. These calculations require
a detailed analysis, carried out by the application engineers
at Twiflex, using dedicated software.
44
Twiflex +44 (0) 20 8894 1161
Power dissipation
In order to provide a consistent controlled performance of a
brake it is also important to check the power dissipated
during a stop. This affects the condition of the brake pads.
To calculate the power dissipation it is necessary to calculate
the total energy absorbed during the stop, estimated as
follows:
Kinetic energy (KE) = J . ωm2 / 2 (Joules)
In the case of external loads further allowance should also be
made for the change in potential energy of the system. For
example in the case of a hoist this is determined by how far
the load drops during the braking cycle. The mean power
dissipated is therefore given by:
Mean power dissipation = KE / tb (Watts)
This is usually converted to what is termed the Mean
Specific Power Dissipation (kW/cm2) for evaluation of pad
performance, i.e. the mean power dissipation is divided by
the pad area.
A value of 0.7kW/cm2 has been shown to be acceptable for
emergency stops of around 10 seconds duration, providing
that the pads have been well bedded in and conditioned.
Higher values can be used for shorter stopping times.
For tensioning duties the value of the mean specific power
dissipation is more typically around 0.06 kW/cm2. Failure to
observe this basic selection criteria may result in poor
braking performance and limited pad life.
Twiflex application engineers will be only too happy to assist
in the selection process to meet your application
requirements.
P-1648-TF
11/10
Application Data Form
Date
Mail or Fax to:
Twiflex Limited
Technical Sales Department
9 Briar Road, Twickenham,
Middlesex. TW2 6RB England
FAX: +44 (0) 20 8755 5601
Phone: +44 (0) 20 8894 1161
Urgent
For Review
Company
Address
City
County
Postcode
Name
Title
Phone (
Email
FAX (
Please Comment
Please Reply
)
)
Please Recycle
Application Description
Type of braking required: (eg: Holding, Dynamic Stopping, Emergency Stopping, Tensioning):
_______________________________________________________________________________________
Service Brake: (Between motor and gearbox):_______________________________________________
Motor Rating: ___________________________________________________________________________
Safety Braking Required? _________________________________________________________________
Brake Torque: ___________________________________________________________________________
Comments
P-1648-TF
Drawing of Application
11/10
Twiflex +44 (0) 20 8894 1161
45
Altra Industrial Motion
All Customer Service phone numbers shown in bold
Electromagnetic
Clutches and Brakes
Engineered Couplings
Heavy Duty
Clutches and Brakes
Warner Electric
Ameridrives Couplings
Wichita Clutch
Australia
Electromagnetic Clutches
and Brakes
Mill Spindles, Ameriflex,
Ameridisc
Pneumatic Clutches
and Brakes
New Hartford, CT - USA
1-800-825-6544
Erie, PA - USA
1-814-480-5000
For application assistance:
1-800-825-9050
Gear Couplings
Wichita Falls, TX - USA
1-800-964-3262
Bedford, England
+44 (0) 1234 350311
Unit 51/9, Hoyle Avenue
Castle Hill, NSW 2154
+61 2 9894 0133
+61 2 9894 0368 (Fax)
St Barthelemy d’Anjou, France
+33 (0) 2 41 21 24 24
San Marcos, TX - USA
1-800-458-0887
Precision Electric Coils and
Electromagnetic Clutches and
Brakes
Bibby Transmissions
Columbia City, IN - USA
1-260-244-6183
Dewsbury, England
+44 (0) 1924 460801
Boksburg, South Africa
+27 11 918 4270
Matrix International
Electromagnetic Clutches
and Brakes, Pressure Operated
Clutches and Brakes
Brechin, Scotland
+44 (0) 1356 602000
1-800-825-6544
Inertia Dynamics
Spring Set Brakes; Power On and
Wrap Spring Clutch/Brakes
1-800-800-6445
Overrunning Clutches
Formsprag Clutch
and Holdbacks
Warren, MI - USA
1-800-348-0881– Press #1
1-800-348-0881 – Press #2
Marland Clutch
Roller Ramp and Sprag Type
and Backstops
Burr Ridge, IL - USA
1-800-216-3515
Disc, Gear, Grid Couplings,
Overload Clutches
TB Wood’s
Asia Pacific Sales Offices
Twiflex Limited
Caliper Brakes and Thrusters
Twickenham, England
+44 (0) 20 8894 1161
Industrial Clutch
Pneumatic and Oil Immersed
Clutches and Brakes
Waukesha, WI - USA
1-262-547-3357
1-888-829-6637 – Press #7
General Purpose
Disc Couplings
San Marcos, TX - USA
1-888-449-9439
Ameridrives Power
Transmission
Universal Joints, Drive Shafts,
Mill Gear Couplings
Green Bay, WI - USA
1-920-593-2444
China - Hong Kong
Room 304A, 3rd Floor
Join-In Hang Sing Centre
71-75 Container Port Rd.
Kwai Chung, Hong Kong
+852 2615 9313
+852 2615 9162 (Fax)
www.warnerelectric.com.hk
China - Shanghai
Shanghai Universal Mansion
Suite 703, 168 Yuyuan Road,
Shanghai 200040
+86 21 5169 9255
+86 21 6248 5387 (Fax)
Elastomeric Couplings
Chambersburg, PA - USA
1-888-829-6637– Press #5
www.warnerelectric.com.au
Gearing
Boston Gear
www.altramotion.com.cn
Enclosed and Open Gearing,
Electrical and Mechanical
P.T. Components
Charlotte, NC - USA
1-800-825-6544
1-800-816-5608
China - Taiwan
3rd Fl., No. 35, Lane 32
Kwang-Fu, South Road
10562 Taipei
+886 2 2577 8156
+886 2 2570 6358 (Fax)
www.warnerelectric.com.tw
Nuttall Gear and
Delroyd Worm Gear
Singapore
Worm Gear and
Helical Speed Reducers
Niagara Falls, NY - USA
1-716-298-4100
Huco Dynatork
39 Benoi Road
Singapore 627725
+65 6487 4464
+65 6487 6674 (Fax)
www.warnerelectric.com.sg
Precision Couplings
and Air Motors
Belted Drives and Sheaves
Hertford, England
+44 (0) 1992 501900
Charlotte, NC - USA
1-800-825-6544
TB Wood’s
Thailand
Belted Drives
Chambersburg, PA - USA
1-888-829-6637 – Press #5
Linear Products
1-888-829-6637 – Press #7
Warner Linear
Engineered
Bearing Assemblies
Stieber Clutch
Linear Actuators
and Holdbacks
Belvidere, IL - USA
1-800-825-6544
Kilian Manufacturing
Heidelberg, Germany
+49 (0) 6221 30 47 0
1-800-825-9050
Syracuse, NY - USA
1-315-432-0700
178 Soi Anamai Srinakarin Rd.,
Suanluang Bangkok 10250
+66 2 322 5527
+66 2 320 2380 (Fax)
www.warnerelectric.co.th
For more information, or to contact
authorized agents in Japan, Korea, India,
or elsewhere in Asia Pacific, send an email
to: [email protected]
Engineered Bearing Assemblies
St Barthelemy d’Anjou, France
+33 (0) 2 41 21 24 24
www.twiflex.com
9 Briar Road, Twickenham
Middlesex, England TW2 6RB
+44 (0) 208 894 1161
Fax: +44 (0) 20 8755 5601
P-1648-TF
11/10
Printed in USA

Industrial Disc Brakes

Transcription

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