Hook Block YG170 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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