Api Crown Block
Specifications
crown block:1.API Spec. 8A&4F.
2.Type:TC30,TC50,TC90,TC135,TC170,TC225,TC315,TC450,TC585
crown block
- The crown block conform to API Spec. 8A&4F.
- Type:TC30,TC50,TC90,TC135,TC170,TC225,TC315,TC450,TC585
- The sheave grooves are intermediate frequency quenched so as to provide surface hardness and extend service life of sheaves.
- The drilling line is reeved in paralle or in blend.
- The sheaves and bearings are interchangeable with those of matching travelling block.
Model |
TC30 |
TC50
|
TC90 |
TC135 |
TC170 |
TC225 |
TC315 |
TC450 |
TC585 |
Max. hook load KN |
300 |
500 |
900 |
1350 |
1700 |
2250 |
3150 |
4500 |
5850 |
O.D. of sheaves mm(in) |
475(18 3/4) |
510(24) |
762(30) |
915(36) |
1005(40) |
1120(44) |
1270(50) |
1524(60) |
1524(60) |
No. of sheaves mm(in) |
4 |
5 |
5 |
5 |
6 |
6 |
7 |
7 |
8 |
Dia. of wire line mm(in) |
24(15/16) |
24(15/16) |
26(1) |
29(1 1/8) |
29(1 1/8) |
32(1 1/4) |
35(1 3/8) |
38(1 1/2) |
42(1 5/8) |

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