Sockets are fitted to hoist ropes either by using white metal or resin and this type of fixing is preferred by many engineers.
The National Coal Board specified that hoist rope sockets are made to their specification 465: 1965 and the capacities and basic dimensions of these sockets are given in the table below.
The sockets are normally made from 1.5% manganese steel to BS 2772: Part 2: 1989 in the hardened and tempered condition. There is a factor of safety of at least 10 on the safe working loads specified.
General Data
|
Socket Identification No.
|
Rope Diameter
|
Safe Working Load
|
Proof Load
|
Approxiamate Weight
| ||
|---|---|---|---|---|---|---|
|
M10
|
5/8
|
3.35
|
8
|
9 1/2
|
||
|
M11
|
11/16
|
4.24
|
16
|
20
|
||
|
M12
|
3/4
|
4.74
|
21
|
|||
|
M13
|
13/16
|
5.78
|
22
|
|||
|
M14
|
7/8
|
6.35
|
25
|
|||
|
M15
|
15/16
|
7.55
|
27
|
42
|
||
|
M16
|
1
|
8.87
|
44
|
|||
|
M17
|
1 1/16
|
9.57
|
46
|
|||
|
M18
|
1 1/8
|
11.03
|
48
|
|||
|
M19
|
1 3/16
|
11.81
|
40
|
78
|
||
|
M20
|
1 1/4
|
13.45
|
82
|
|||
|
M21
|
1 5/16
|
14.29
|
84
|
|||
|
M22
|
1 3/8
|
16.15
|
86
|
|||
|
M23
|
1 7/16
|
18.00
|
56
|
130
|
||
|
M24
|
1 1/2
|
18.92
|
132
|
|||
|
M25
|
1 9/16
|
21.07
|
137
|
|||
|
M26
|
1 5/8
|
22.00
|
141
|
|||
|
M27
|
1 3/8
|
24.30
|
74
|
195
|
||
|
M28
|
1 3/4
|
26.61
|
202
|
|||
|
M29
|
1 13/16
|
27.84
|
210
|
|||
|
M30
|
1 7/8
|
30.30
|
220
|
|||
|
M31
|
1 15/16
|
31.54
|
90
|
280
|
||
|
M32
|
2
|
34.15
|
290
|
|||
|
M33
|
2 1/16
|
36.92
|
300
|
|||
|
M34
|
2 1/8
|
38.30
|
310
|
|||
|
M35
|
2 3/16
|
41.23
|
118
|
350
|
||
|
M36
|
2 1/4
|
42.61
|
412
|
|||
|
M37
|
2 5/16
|
45.23
|
475
|
|||
|
M38
|
2 3/8
|
46.77
|
525
|
|||
|
M39
|
2 7/16
|
49.84
|
131
|
595
|
||
|
M40
|
2 1/2
|
53.07
|
610
|