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Hook Block YG90
Main features of the hook block:
1. Joining the traveling block and the hook together reduced overall length to satisfy the requirement of a top drive.
2.The shaft of the traveling block are forged with alloy steel and provided with a lubrication hole of bearing for one sheave.
3.The sheave grooves are intermediate frequency quenched so as to improve surface hardness and extend service lift of sheaves.
4.All sheaves had double-row conical roller bearings and each bearing has individual lubricating channel.
5.There is a reliable safety device at the hook.
6.The primary-load-carrying parts of the hook are subject to NDE test.
7.The hook block conform to API Spec. 8A/8C and API monogram can be used.
The main technical performance and specification for the hook block:
Model |
YG90 |
YG135 |
YG170 |
YG315 |
YG450 |
|
|
Max. hook load KN |
900 |
1350 |
1700 |
3150 |
4500 |
|
|
Dia. of wire line mm |
26(1”) |
26(1”)/29(1-1/8”) |
29(1-1/8”)/32(1-1/4”) |
32(1-1/4”)/35(1-3/8”) |
35(1-3/8”)/38(1-1/2”) |
|
|
OD of sheave mm |
762(30) |
915(36) |
915(36) |
1270(50) |
1524(60) |
|
No. of sheave |
4 |
4 |
5 |
6 |
6 |
|
|
Major-hook opening mm(in) |
155(6-1/16”) |
165(6-1/2”) |
180(7”) |
220(8-5/8”) |
220(8-5/8”) |
|
|
Major-hook dia. mm(in) |
116(4-1/2”) |
140(5-1/2”) |
150(6”) |
180(7”) |
180(7”) |
|
|
Minor-hook dia. mm(in) |
80(3-1/4”) |
90(3-1/2”) |
90(3-1/2”) |
120(4-3/4”) |
120(4-3/4”) |
|
|
Size mm |
2908 |
3195 |
3294 |
4322 |
4887 |
2690 |
806 |
960 |
960 |
1350 |
1600 |
1350 |
|
533 |
616 |
630 |
784 |
880 |
800 |
|
|
Weight Kg |
2850 |
3590 |
4585 |
8787 |
12530 |
|
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