Crown Block
The crown block is a drilling rig component that is a stationary section of the oil rigthat houses a set of pulleys or sheaves where the drill line is threaded.
Features
1. Designed and manufactured in compliance with API 4F and 8C.
2. A central lubrication point is provided.
3. Line guards and 8" square rubber bumper blocks are installed at the crown block base.
Model | | | ||||||
Max. hook load | KN | 1350 | 1700 | 2250 | 3150 | 4500 | 5850 | 6750 |
OD of fast sheave | mm/in | 915(36) | 1005(40) | 1120(44) | 1524(60) | 1829(72) | 1829(72) | 1829(72) |
OD of sheaves | mm/in | 915(36) | 1005(40) | 1120(44) | 1270(50) | 1524(60) | 1524(60) | 1524(60) |
Number of sheaves | 5 | 6 | 6 | 7 | 7 | 8 | 8 | |
Dia. Of wire line | mm/in | 29(1 1/8) | 29(1 1/8) | 32(1 1/4) | 35(1 3/8) | 38(1 1/2) | 42(1 3/8) | 45(1 3/4) |
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