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Hook/Block Assembly
Design features:
1).Joining the travelling block and the hook together reduces overall length to satisfy the requipments of a top drive.
2).The shafts of travelling block are forged with alloy steel and provided with a lubrication hole of bearing for one sheave.
3).The grooves of sheaves are intermediate frequency quenched so as to inprove the surface hardness and prolong the service life of wire rope
4).The sheaves are equipped with double-row conic roller bearings .each bearing has its own lubrication channel .
5).There is a reliable safety device at the hook..
6).The primary-load-carrying parts of hook are subject to NDE test
7).The hook block assembly conforms to API spec.8A/8C and is used API monogram on it .
Main parameters:
Model | YG90 | YG135 | YG170 | YG450 |
Max. hook load,KN | 900 | 1350 | 1700 | 4500 |
O.D. of sheaves,mm(in) | 762(30) | 915(36) | 915(36) | 1524(60) |
Number of sheaves | 4 | 4 | 5 | 6 |
Dia meter of wire line,mm(in) | 26(1) | 26(1) | 29(1 1/8) | 38(1 1/2) |
Major-hook opening,mm(in) | 155(6 1/16) | 165(6 1/2) | 180(7) | 220(8 5/8) |
Major-hook dia, mm(in) | 116(4 1/2) | 140(5 1/2) | 150(6) | 180(7) |
Minor-hook dia, mm(in) | 80(3 1/4) | 90(3 1/2) | 90(3 1/2) | 120(4 3/4) |
Overall dimension(L*W*H), mm | 2908*806*533 | 3195*960*616 | 3294*960*713 | 4887*1600*880 |
Weight,kg | 2850 | 3590 | 4585 | 12530 |
Hook/Block Assembly