Design Features:
▋The drilling line is reeved in parallel.
▋The crown frame is made of high strength steel shapes & plates. The lug plate for top drive is provided. It is equipped
with metal base plate, handrail, and toeboard. A ladder has an opening.
▋A deviation fast-line sheave.
▋The sheave cluster is tilted to counteract traveling block’s torque. The side plate assembly is faced with derrick man
for ease of picking off & suspending elevators.
▋The sheave grooves are intermediate frequency quenched so as to provide surface hardness and extend service life of sheaves.
▋All sheaves have double-row conical roller bearings and each bearing has individual lubricating channel.
▋The rope guard prevents the wire rope from running out of the sheave grooves.
▋Equipped with wooden bumper blocks and retainer net.
▋Equipped with a frame crane for use in repairing the sheaves cluster.
▋Equipped with sand line sheaves and auxiliary sheaves.
▋The sheaves and bearings are interchangeable with those of matching travelling block.
▋The crown blocks conform to API Spec. 8A/4F and API monogram is permitted to be used.
Specifications:
| Model | TC135 | TC170 | TC225 | TC315 | TC450 | TC585 | |
| Max. hook load | kN | 1350 | 1700 | 2250 | 3150 | 4500 | 5850 |
| O.D. of sheaves | mm (in) | 915(36) | 1005(40) | 1120(44) | 1270(50) | 524(60) | 1524(60) |
| Number of sheaves | 5 | 6 | 6 | 7 | 7 | 8 | |
| Dia. of wire line | mm (in) | 29 (11/8) | 29 (11/8) | 32 (11/4) | 35 (13/8) | 38 (11/2) | 42 (15/8) |
| Overall dimension (L×W×H) | mm | 2500×2050×1920 | 2687×2150×2046 | 3200×3347×3640 | 3295×2776×2514 | 3068×2906×3576 | 3070×3000×3600 |
| Weight | kg | 2400 | 2920 | 5310 | 7400 | 9500 | 10000 |