detachinghooks1Reliance Barker Davies detaching hooks may be fitted with any form of coupling at the upper and lower attachment points. Although forged shackles may be supplied if required, it is considered that the imperfections inherent in hand forged components such as shackles tend to produce non-linear loading and may cause unequal stresses in the plate work of the hook. It is preferable that plate links, or better still, solid machined chaseblocks are used with detaching hooks to ensure balanced loading on all components.

The sizes shown in the tables below are our standard range and are suitable for almost any application.

The inner plates of the hooks being the only load bearing plates are manufactured from 1.5% manganese steel to BS 2772, Part 2, 1989, in hardened and tempered condition. The centre or hinge pin is also in this material and condition. The outer plates, drop and spacer pins, are in mild steel to BS 4360: 1979, in the as rolled condition. The shear bolt is copper. All hooks are proof loaded tested to 2.5 times the safe working load and subject to magnetic crack detection. Ultrasonic tests can also be carried out if required.

General Data - Mk.2A Detaching Hooks

Safe Working Load based on factor of safety of 10:1
 
Approximate Weight (without Shackles)
kg
ton
 
kg
lb
4064
4
 
33
72
5080
5
 
51
112
6604
6 1/2
 
70
154
8128
8
 
98
216
10160
10
 
163
360
12192
12
 
166
366
15240
15
 
216
476
20320
20
 
265
585
25400
25
 
297
654
30480
30
 
317
700
35560
35
 
365
804

General Data & Dimensions -Catchplate

detachinghooks clip image002

Safe Working Load based on factor of safety of 10:1
 
N
 
O
 
P
 
Q
kg
ton
 
mm
in
 
mm
in
 
mm
in
 
mm
in
4064
4
 
26
1
 
762
30
 
457
18
 
156
6 5/32
5080
5
 
29
1 1/8
 
838
33
 
533
21
 
182
7 5/32
6604
6 1/2
 
32
1 1/4
 
838
33
 
610
24
 
208
8 3/16
8128
8
 
35
1 3/8
 
838
33
 
610
24
 
233
9 3/16
10160
10
 
38
1 1/2
 
914
36
 
686
27
 
259
10 3/16
12192
12
 
45
1 3/4
 
914
36
 
686
27
 
259
10 3/16
15240
15
 
51
2
 
914
36
 
686
27
 
311
12 1/4
20320
20
 
64
2 1/2
 
914
36
 
686
27
 
311
12 1/4
25400
25
 
70
2 3/4
 
To suit
To suit
 
To suit
To suit
 
364
14 5/8
30480
30
 
76
3
 
"
"
 
"
"
 
364
14 5/8
35560
35
 
89
3 1/2
 
"
"
 
"
"
 
364
14 5/16

Wire Rope Attachments for Mining & General Engineering purposes

 

In North and South America:

Tel: +1-705-897-2828
Fax: +1-705-897-1101

In the United Kingdom:

Tel: + 44 1656 760371
Fax: + 44 1656 760372