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Crown Block Drilling line size 24 mm Sheaves O.D 475 mm Max.Load 300 KN
Descriptions of Crown Block Drilling line size 24 mm Sheaves O.D 475 mm Max.Load 300 KN:
Series crown blocks conform to API Spec 4F and Spec 8A, and are granted the right to use API monogram.
Conform to industry standard SY/T5527.
Sheave grooves are heat quenched to provide good abrasion resistance and long service life.
Rope bar and rope barrier are provided to prevent the wire rope from crossing or tailing out of the sheave grooves.
Wooden buffer device is provided.
Lifting frame for maintaining sheaves assembly are provided.
Crown block sheave and traveling block sheaves are interchangeable.
Specifications:
| Model | TC30 | TC50 | TC90 | TC135 | TC170 | TC225 | TC315 | TC450 | |
| Max.Load KN | 300 | 500 | 900 | 1350 | 1700 | 2250 | 3150 | 4500 | |
| Drilling line size mm | 24 | 24 | 26 | 29 | 29 | 32 | 35 | 38 | |
| Sheaves O.D mm | 475 | 610 | 762 | 1005 | 1005 | 1120 | 1270 | 1524 | |
| Number of sheaves | 4 | 5 | 5 | 5 | 6 | 6 | 7 | 7 | |
| Oveall dimensions mm | Length | 738 | 860 | 2317 | 2320 | 2668 | 2668 | 3192 | 3410 |
| Width | 472 | 670 | 2076 | 1438 | 2460 | 2709 | 2783 | 2753 | |
| Height | 575 | 588 | 1577 | 1781 | 1855 | 2469 | 2350 | 2420 | |
| Weight Kg | 245 | 464 | 3260 | 2775 | 4540 | 6500 | 8800 | 11012 | |