Cylinder/piston sets

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Air Cylinders
Overview
Anti-stiction
Air Cylinders
Anti-Stiction Air Cylinders
L3500 - L3510 Sizes Bore diameter 9.3mm. Pages 270 - 275
Double Acting Units
Universal mount includes:
rear pivot mount, front rear
stud mount.
Double Rod End
Front stud mount.
Front rear stud mount.
Universal mount includes:
rear pivot mount, front rear
stud mount.
Single Acting Units - air extend, spring return
Air extend, spring return.
Air extend, spring return,
front stud mount.
L3520 - L3530 Sizes Bore diameter 15.9mm. Pages 276 - 281
Double Acting Units
Universal mount includes:
rear pivot mount, front rear
stud mount.
Double Rod End
Front stud mount.
Front rear stud mount.
Universal mount includes:
rear pivot mount, front rear
stud mount.
Single Acting Units - air extend, spring return
Air extend, spring return.
Air extend, spring return,
front stud mount.
L3540 - L3548 Sizes Bore diameter 24mm. Pages 282 - 286
Double Acting Units
Universal mount includes:
rear pivot mount, front rear
stud mount.
Front stud mount.
Front rear stud mount.
Single Acting Units - air extend, spring return
Air extend, spring return.
Air extend, spring return,
front stud mount.
L3556 - L3558 Sizes Bore diameter 32.5mm. Pages 287 - 288
Double Acting Units
[email protected]
01483 266 784
Springfix Linkages is a division of Automotion Components Ltd
267
Anti-stiction
Air Cylinders
Technical Information
Anti-stiction Air Cylinders
What is stiction?
Stiction is the problem that causes air cylinders to stick at the start of the stroke - resulting in
erratic breakaway motion. Technically it’s the difference between static friction and moving
friction when static friction is higher. Our Anti-Stiction Air Cylinders do away with any
perceptible stiction and reduces running friction to exceedingly low levels. This gives them
the unique ability to impart super smooth motion, smoother than any other air cylinder.
Features and bene ts
Ultra Low Friction - In conventional air cylinders there is a design trade-off. No air leakage
in exchange for higher stiction and running friction. Our Anti-Stiction Air Cylinders chose to
go the other way. A little air leakage, which is not relevant in most applications, in return
for ultra low friction.
The Anti-Stiction Air Cylinders use a precision t graphite piston which slides freely, without
lubrication, inside a glass cylinder. No corrosion and no need for lubrication - our glass cylinders
are encased in a stainless steel sleeve with a small space in between which provides excellent
impact protection, so much so that the outside wall can be dented without affecting the glass
liner. If you dent a conventional air cylinder, you can expect its operation to be severely
impaired because the piston rides against the exposed cylinder. They can operate at
extreme temperatures, at very high speeds and cycle rates. They also run cleaner than
typical air cylinders as they contain no oil or grease. They have no rubber or plastic seals
to wear out or harden with time.
Anti-Stiction Air Cylinder or Actuator?
Both employ a unique combination of glass cylinder and graphite piston and have similar
performance properties with respect to friction, cleanliness, and temperature range. The
major differences are in the actuation direction capabilities, outer construction, mounting
features, and dimensions. The chart below offers a quick comparison between the two:
Anti-stiction
Air Cylinder Actuator
Double Acting Capability
Can Actuate From Rod End
Outer Steel Case
Double Rod Models
Can Pivot Cylinder
Can Vacuum Actuate
Pressure One Way, Spring Retract
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
Least Possible Friction
Lowest Pressure Response
Most Compact
Least Mass/Weight
Highest Degree of Cleanliness
Useful for Pumping






Greatest Rod Angle



























268







springfixlinkages.com
Springfix Linkages is a division of Automotion Components Ltd
Technical Information
Anti-stiction
Air Cylinders
Anti-stiction Air Cylinders Comparison Table
Air cylinders performance speci cations
L3500 - L3510
L3520 - L3530
L3540 - L3548
L3556 - L3558
Bore (mm)
9.3
15.9
24.0
32.5
Piston area (sq. mm)
67.7
198
452.5
830
Max pressure (MPa)
0.7
Suitable for vacuum actuation?
Yes
Yes
Yes
No
Force output at max
pressure on the rear side (newtons)
47.4
139
316.6
581
Force output at max pressure on the
rod side (newtons)
42
125
294.5
526
Force factor rear side
(factor x pressure [MPa] = force output [N])
67.7
198
452.5
830
Force factor rod side
(factor x pressure [MPa] = force output [N])
60
178
420.8
751
Min pressure differential
required for actuation (MPa)
<0.0015
<0.0015
<0.0015
<0.0035
Piston friction as % of load
(without side load)
1 to 2%
1 to 2%
1 to 2%
1 to 2%
41.4 + (0.254 x stroke)
82.6 + (0.56 x stroke)
Operating temperature range
-55°C to +150°C
Weight of piston/rod assy (grams)
Single rod end models
4.5 + (0.375 x stroke)
Double rod end models
8.87 + (0.064 x stroke) 28.48 + (0.315 x stroke) 74.28 + (0.509 x stroke)
16 + (0.142 x stroke)
Weight of complete unit (grams)
Single rod end models
31.7 + (0.375 x stroke)
64.6 + (0.622 x stroke) 157.18 + (1.225 x stroke)
Double rod end models
41.02 + (0.462 x stroke) 80.45 + (0.854 x stroke) 204.9 + (0.462 x stroke)
616 + (3.66 x stroke)
Max Leak at Reference Pressures
At pressure MPa =
0.34
Max leak rate by piston: SL/min*
1.16
1.39
2.2
2.2
Max leak rate by rod: SL/min*
2.2
2.6
2.6
2.0
Note: Lower leak rates are available for both imperial and metric models on request. Please contact our technical department for more information.
[email protected]
01483 266 784
Springfix Linkages is a division of Automotion Components Ltd
269
Cylinder/
Piston Sets
Cylinder / Piston Set
0,22" bore
0,125
Ø 0,120
Ø 0,220 Ø 0,062
L4630
0,225
Material
Piston: Carbon graphite
Cylinder: Glass
Order No.
L4630.0500
L4630.1000
L4630.2000
L4630.3000
L4630.4000
L4630.5000
L4630.6000
L4630.7000
L4630.8000
44
Ø 0,289/0,311
Technical Notes
Max operating temp = 260ºC
Stroke
Bore
Outside
Diameter
Cylinder
length
Piston
Length
0,5"
1,0"
2,0"
3,0"
4,0"
5,0"
6,0"
7,0"
8,0"
0,220
0,220
0,220
0,220
0,220
0,220
0,220
0,220
0,220
0,311
0,311
0,311
0,311
0,311
0,311
0,311
0,311
0,311
0,825"
1,325"
2,325"
3,325"
4,325"
5,325"
6,325"
7,325"
8,325"
0,225
0,225
0,225
0,225
0,225
0,225
0,225
0,225
0,225
Tel: 01483 26 67 74
Fax: 01483 26 67 75
Important Notes
Specials available on request.
Piston
Area
Friction
Sq IN
sideload
0,038
0,038
0,038
0,038
0,038
0,038
0,038
0,038
0,038
grms W/O
<
<
<
<
<
<
<
<
<
1
1
1
1
1
1
1
1
1
Cylinder
Weight
Piston
Weight
g
g
1,39
1,39
1,39
1,39
1,39
1,39
1,39
1,39
1,39
0,20
0,20
0,20
0,20
0,20
0,20
0,20
0,20
0,20
web: automotioncomponents.co.uk
a website from Automotion Components
Cylinder / Piston Set
Cylinder/
Piston Sets
0,366" bore
0,125
Ø 0,250
Ø 0,366 Ø 0,101
Ø 0,441/0,462
L4632
0,375
Material
Piston: Carbon graphite
Cylinder: Glass
Order No.
L4632.0500
L4632.1000
L4632.2000
L4632.3000
L4632.4000
L4632.5000
L4632.6000
L4632.7000
L4632.8000
Technical Notes
Max operating temp = 260ºC
Stroke
Bore
Outside
Diameter
Cylinder
length
Piston
Length
0,5"
1,0"
2,0"
3,0"
4,0"
5,0"
6,0"
7,0"
8,0"
0,336
0,336
0,336
0,336
0,336
0,336
0,336
0,336
0,336
0,462
0,462
0,462
0,462
0,462
0,462
0,462
0,462
0,462
0,975"
1,475"
2,475"
3,475"
4,475"
5,475"
6,475"
7,475"
8,475"
0,375
0,375
0,375
0,375
0,375
0,375
0,375
0,375
0,375
Tel: 01483 26 67 74
Fax: 01483 26 67 75
Important Notes
Specials available on request.
Piston
Area
Friction
Sq IN
sideload
0,105
0,105
0,105
0,105
0,105
0,105
0,105
0,105
0,105
grms W/O
<
<
<
<
<
<
<
<
<
1
1
1
1
1
1
1
1
1
Cylinder
Weight
Piston
Weight
g
g
2,29
2,29
2,29
2,29
2,29
2,29
2,29
2,29
2,29
0,77
0,77
0,77
0,77
0,77
0,77
0,77
0,77
0,77
web: automotioncomponents.co.uk
a website from Automotion Components
45
Cylinder/
Piston Sets
Cylinder / Piston Set
0,627" bore
0,125
Ø 0,495
Ø 0,627 Ø 0,101
Ø 0,710/0,746
L4634
0,505
Material
Piston: Carbon graphite
Cylinder: Glass
Order No.
L4634.0500
L4634.1000
L4634.2000
L4634.3000
L4634.4000
L4634.5000
L4634.6000
L4634.7000
L4634.8000
46
Technical Notes
Max operating temp = 260ºC
Stroke
Bore
Outside
Diameter
Cylinder
length
Piston
Length
0.5"
1,0"
2,0"
3,0"
4,0"
5,0"
6,0"
7,0"
8,0"
0,627
0,627
0,627
0,627
0,627
0,627
0,627
0,627
0,627
1,246"
1,746"
2,746"
3,746"
4,746"
5,746"
6,746"
7,746"
8,746"
0,605
0,605
0,605
0,605
0,605
0,605
0,605
0,605
0,605
0,505
0,505
0,505
0,505
0,505
0,505
0,505
0,505
0,505
Tel: 01483 26 67 74
Fax: 01483 26 67 75
Important Notes
Specials available on request.
Piston
Area
Friction
Sq IN
sideload
0,309
0,309
0,309
0,309
0,309
0,309
0,309
0,309
0,309
grms W/O
<
<
<
<
<
<
<
<
<
1
1
1
1
1
1
1
1
1
Cylinder
Weight
Piston
Weight
g
g
4,71
4,71
4,71
4,71
4,71
4,71
4,71
4,71
4,71
2,37
2,37
2,37
2,37
2,37
2,37
2,37
2,37
2,37
web: automotioncomponents.co.uk
a website from Automotion Components
Cylinder/
Piston Sets
Cylinder / Piston Set
1,281" bore
0,312
Ø 1,015
Ø 1,281 Ø 0,193
Ø 1,422/1
L4638
0,750
Material
Piston: Carbon graphite
Cylinder: Glass
Order No.
L4638.0500
L4638.1000
L4638.2000
L4638.3000
L4638.4000
L4638.5000
L4638.6000
L4638.7000
L4638.8000
48
Technical Notes
Max operating temp = 260ºC
Stroke
Bore
Outside
Diameter
Cylinder
length
Piston
Length
0,5"
1,0"
2,0"
3,0"
4,0"
5,0"
6,0"
7,0"
8,0"
1,281
1,281
1,281
1,281
1,281
1,281
1,281
1,281
1,281
1,456
1,456
1,456
1,456
1,456
1,456
1,456
1,456
1,456
1,350"
1,850"
2,850"
3,850"
4,850"
5,850"
6,850"
7,850"
8,850"
0,750
0,750
0,750
0,750
0,750
0,750
0,750
0,750
0,750
Tel: 01483 26 67 74
Fax: 01483 26 67 75
Important Notes
Specials available on request.
Piston
Area
Friction
Sq IN
sideload
1,289
1,289
1,289
1,289
1,289
1,289
1,289
1,289
1,289
grms W/O
<
<
<
<
<
<
<
<
<
1
1
1
1
1
1
1
1
1
Cylinder
Weight
Piston
Weight
g
g
13,82
13,82
13,82
13,82
13,82
13,82
13,82
13,82
13,82
17,75
17,75
17,75
17,75
17,75
17,75
17,75
17,75
17,75
web: automotioncomponents.co.uk
a website from Automotion Components
Cylinder / Piston Set
Cylinder/
Piston Sets
1,750" bore
0,375
Ø 1,433
Ø 1,750 Ø 0,193
Ø 1,891/1,925
L4640
0,750
Material
Piston: Carbon graphite
Cylinder: Glass
Order No.
L4640.0500
L4640.1000
L4640.2000
L4640.3000
L4640.4000
L4640.5000
L4640.6000
L4640.7000
L4640.8000
Technical Notes
Max operating temp = 260ºC
Stroke
Bore
Outside
Diameter
Cylinder
length
Piston
Length
0,5"
1,0"
2,0"
3,0"
4,0"
5,0"
6,0"
7,0"
8,0"
1,750
1,750
1,750
1,750
1,750
1,750
1,750
1,750
1,750
1,925
1,925
1,925
1,925
1,925
1,925
1,925
1,925
1,925
1,350
1,850
2,850
3,850
4,850
5,850
6,850
7,850
8,850
0,750
0,750
0,750
0,750
0,750
0,750
0,750
0,750
0,750
Tel: 01483 26 67 74
Fax: 01483 26 67 75
Important Notes
Specials available on request.
Piston
Area
Friction
Sq IN
sideload
2,406
2,406
2,406
2,406
2,406
2,406
2,406
2,406
2,406
grms W/O
<
<
<
<
<
<
<
<
<
1
1
1
1
1
1
1
1
1
Cylinder
Weight
Piston
Weight
g
g
18,56
18,56
18,56
18,56
18,56
18,56
18,56
18,56
18,56
34,60
34,60
34,60
34,60
34,60
34,60
34,60
34,60
34,60
web: automotioncomponents.co.uk
a website from Automotion Components
49