|
|
 |
|
 |
| Rating W, tonnes |
40 |
50 |
63 |
80 |
100 |
125 |
160 |
200 |
250 |
| Proof Load R tonnes |
70 |
85 |
100 |
120 |
145 |
170 |
215 |
266 |
333 |
| a1 (28/P) |
125 + 4 |
140 A |
160+ 5 |
180- 5 |
200+ 6 |
224+ 7 |
250+ 8 |
280+ 9 |
315 + 10 |
| a2 (0.8 sa1) |
100+ 3 |
112+ 3 |
125+ 4 |
140+ 4 |
160+ 5 |
180+ 5 |
200+ 6 |
224+ 7 |
250+8 |
| b1 (0.85 a1) |
106+11 0 |
118+12 0 |
132+14 0 |
150+16 0 |
170+18 0 |
190+20 0 |
212+22 0 |
236+ 25 0 |
265+ 28 0 |
| b2(0.335 a,) |
43 + 5 0 |
48 + 5 0 |
53+6 0 |
60 + 6 0 |
67+7 0 |
75 + 8 0 |
85 + 9 0 |
95 + 10
0 |
106+11 0 |
| d1 (0.85 a,) |
106+5 |
118 + 6 |
132 + 7 |
150 + 8 |
170 + 9 |
190+10 |
212 ±11 |
236 ±12 |
265 ± 13 |
| d2 (0.71 a,) |
90 |
100 |
110 |
125 |
140 |
160 |
180 |
200 |
225 |
| d3* |
M90x6 |
M100x6 |
M110x6 |
M125X6 |
M140x6 |
M160X6 |
M180x6 |
M200 x 6 |
M225 x 6 |
| f (4.25 a1) |
530 |
600 |
670 |
750 |
850 |
950 |
1 060 |
1 180 |
1 320 |
| /1(1.06a1) |
132 + 13 0 |
150 + 15 0 |
170 + 17 0 |
190 + 19 0 |
212 +21 0 |
236 +24 0 |
265+27 0 |
300+30 0 |
335 +34 0 |
| /1 |
188 |
207 |
234 |
260 |
282 |
325 |
357 |
405 |
455 |
| /2 |
510 |
572 |
645 |
705 |
790 |
896 |
1 005 |
1 130 |
1 260 |
| m, Min |
80 |
90 |
100 |
112 |
125 |
140 |
160 |
180 |
200 |
| r1 (0.125 a1) |
16 |
18 |
20 |
22 |
25 |
28 |
32 |
36 |
40 |
| r2 (0.1 a1) |
13 |
14 |
16 |
18 |
20 |
22 |
25 |
28 |
32 |
| r3 (1.18 a1) |
150 |
170 |
190 |
212 |
236 |
265 |
300 |
335 |
375 |
* Equivalent knuckle or round threads are permissible
* A different length may be specified subject to agreement between the supplier and the purchaser.
|
|
| Position for Load Test |
|
Each completed ramshorn hook shall, after heat treatment, be subjected to a vertical proof load
specified in Table 1. If the vertical proof load test is applied in accordance with Fig. 1 A, an additional test of half the proof load specified for the vertical loading shall be applied horizontally as indicated Fig, 1B. Prior to the application of proof loading, each hook shall bear a centre punch mark at position a from which scribed lines shall be trammelled to position b. After removal of the load, the hook shall be re-scribed with the trammel unaltered, and the difference between the scribed lines shall be the amount of permanent set. The permanent set shall in no case exceed 0.25 percent of the distance a b. The ramshorn hook shall then be thoroughly examined by a competent person
and shall be accepted as complying with this standard only if found free from flaw or defect.
|
|
|
|
|
|
|
|
|
