Balance rope sockets can be fitted either by using white metal or resin and many engineers prefer this type of fixing.
The UK National Coal Board specified that balance rope sockets be made to sizes based on BS 463: Part 2: 1970 and these are detailed below.
The sockets are normally made from 1.5% manganese steel to BS 2772: Part 2: 1989, in the hardened and tempered condition and the safe working load given provide a factor of the socket of at least 10. All sockets are proof load tested to 2.5 times the safe working load.
General Data
|
Rope Diameter
|
Safe Working Load
|
Approximate Weight
| ||
|---|---|---|---|---|
|
mm
|
kg
|
kg
|
||
|
22
|
3150
|
3.2
|
||
|
25
|
4000
|
4.7
|
||
|
28
|
5000
|
6.8
|
||
|
32
|
6250
|
9.5
|
||
|
36
|
8000
|
14
|
||
|
40
|
10000
|
19
|
||
|
45
|
12500
|
25
|
||
|
50
|
16000
|
38
|
||
|
56
|
20000
|
51
|
||
|
60
|
22500
|
67
|
||
|
63
|
25000
|
79
|
||
|
67
|
28500
|
94
|
||
|
71
|
32000
|
113
|
||
|
75
|
36000
|
130
|