Chapter 8 - Swivels

Transcription

Chapter 8 - Swivels
Swivels
Applications
Thrust bearing swivels are used to prevent wire rope or chain from transferring their normal twisting motion to the
item being lifted.
Green Pin® swivels are not designed to rotate under load, but are intended as positioning devices only.
For rotation under load, thrust bearing swivels should be used. Our swivels can be supplied with two types of end
fittings.
Range
Van Beest offers two types of swivels:
• Green Pin® swivels, ranging from WLL 0.39 up to 20.5 tons, with eye-eye or jaw-eye terminals;
• Thrust bearing swivels, ranging from WLL 1 up to 40 tons, with eye-eye terminals.
Van Beest can also offer other types of swivels in grade 8 and grade 10.
Please refer to the EXCEL® section in this catalogue for more information.
Design
Green Pin® swivels are drop forged. Thrust bearing swivels are machined from carbon steel. The range of thrust
bearing swivels we supply are fitted with grease nipples to ensure long life and smooth operation. The greasing
schedule must be adjusted to the frequency and intensity of use.
Each swivel is generally marked with:
- Working load limit
n e.g. 2.4 t
- manufacturer’s symbol
n e.g. GP
5
- size in inch
ne.g. /8”
- traceability code
n e.g. HA
Finish
Green Pin® eye-eye and jaw-eye swivels are hot dipped galvanized.
Thrust bearing swivels are painted.
Certification
Specific details of certificate availability can be found on each product page.
Please verify your certification requirements with Van Beest at time of order.
8
Instructions for use
9
Swivels should be inspected before use to ensure that:
- all markings are legible;
- a swivel with the correct WLL has been selected;
- the bolt, nut or any other locking system cannot vibrate out of position;
- swivels are free from nicks, gouges and cracks;
- swivels may not be heat treated as this may affect their WLL.
10
11
12
The WLL should be applied in-line. Avoid overloads. Side loading is not allowed since the swivels are not designed
for this purpose.
13
Never replace a swivel pin or nut with a pin other than the one designed for the purpose, as otherwise the swivel
may not be suitable for the load imposed.
14
Swivels must be regularly inspected in accordance with the safety standards given in the country of use. This
is required because the products in use may be affected by wear, misuse, overloading etc. which may lead to
deformation and alteration of the material structure.
Inspection should take place at least every six months and more frequently when the swivels are used in severe
operating conditions.
15
16
17
18
19
20
120
Swivels
Green Pin® swivels
Eye - Eye
•
•
•
•
Material
Safety factor
Standard
Finish
: high tensile steel, quenched and tempered
: MBL equals 5 x WLL
: US Federal Spec. RR-C-271, Type VII, Class 2
: hot dipped galvanized
: 2.1 2.2
• Certification
working
load
limit
t
G-7713
0.39
0.57
1.02
1.6
2.4
3.3
4.5
5.7
8.2
20.5
:
diameter
length
outside
width
outside
length
inside
width
inside
length
inside
length
a
mm
b
mm
c
mm
d
mm
e
mm
f
mm
g
mm
 6
 8
10
13
16
19
22
25
32
38
 87
106
129
164
199
221
257
295
337
501
 32
 41
 51
 64
 76
 89
102
114
143
178
 18
 21
 24
 33
 40
 44
 52
 59
 68
102
 19
 25
 32
 38
 44
 51
 57
 64
 80
102
 27
 32
 38
 51
 60
 67
 78
 89
 94
150
 75
 90
109
138
167
183
213
245
273
425
weight
each
kg
0.1
0.18
0.3
0.6
1
1.82
2.55
4.06
7.43
20.8
 8
 9
10
11
12
13
14
15
16
17
18
19
20
121
Swivels
Green Pin® swivels
Jaw - Eye
•
•
•
•
Material
Safety factor
Standard
Finish
• Certification
working
load
limit
G-7723
8
9
10
11
12
13
14
15
16
17
18
19
20
122
t
0.39
0.57
1.02
1.6
2.4
3.3
4.5
5.7
8.2
20.5
: high tensile steel, quenched and tempered
: MBL equals 5 x WLL
: US Federal Spec. RR-C-271, Type VII, Class 3
: hot dipped galvanized
: 2.1 2.2
:
diameter
length
width
outside
length
inside
width
inside
length
inside
length
width
inside
diameter
pin
weight
each
a
mm
b
mm
c
mm
d
mm
e
mm
f
mm
g
mm
h
mm
i
mm
kg
 6
 8
10
13
16
19
22
25
32
38
 84
 98
121
154
186
211
242
290
329
501
 32
 41
 51
 64
 76
 89
102
114
143
178
 18
 21
 24
 33
 40
 44
 52
 59
 68
106
 19
 25
 32
 38
 44
 51
 57
 64
 80
102
 22
 22
 27
 33
 38
 44
 52
 71
 71
113
 67
 75
 92
114
135
154
178
217
230
364
12
13
16
19
24
29
30
44
52
73
 6
 8
10
13
16
19
22
29
35
50
0.09
0.16
0.32
0.57
1.12
1.76
2.66
4.02
7.14
24.8
Swivels
Green Pin® Thrust bearing swivels
Eye - Eye
• Material
• Safety factor
• Finish
: carbon steel
: MBL equals 5 x WLL
: painted black
• Certification
:
working
load
limit
P-7740
: 2.1 2.2 MTC a
length
length
thickness
diameter
diameter
hole
weight
each
t
a
mm
b
mm
c
mm
d
mm
e
mm
kg
 1
 2
 3
 5
 8
10
15
20
30
40
174
223
278
290
366
390
457
474
612
760
128
173
210
222
276
300
355
372
472
600
12.5
19
26
26
40
40
40
40
64
68
 49
 68
 79
 89
106
118
128
118
138
168
21
22
29
31
43
49
49
51
59
65
1.4
3.5
6.4
7.9
15.2
19.1
26.6
25
50
-
 8
 9
10
11
12
13
14
15
16
17
18
19
20
123