API 8C Drilling Rig Accessories , Crown Block Sheave Block Pulley

OD of the sheave(mm):762mm,915mm/1005mm,1120mm,1270mm,1524mm

Available crown block model: TC90,TC135,TC158,TC170,TC225,TC315,TC450,TC675

Available traveling block model:YG110,YG150,YG180,YC225,YC315,YC450,YC675

The frame of the crown block is made with high strength steel material. Working pulley block are set slantingly to counteract the torsion of sheave and make side board of traveling block face to .

The pulley groove is undertaken middle-frequency quencher so as to extend operating life of sheaves. Working sheave are assembled with double-conic bearing, where in each bearing has its individual lubricating channel.

Rope bar are provided to prevent the wire rope from crossing or failing out the groove. The Crown block is also equipped with wooden buffer and protection net to prevent bump. It is equipped with crane as well for repairing the crown block.

Sand sheaves and auxiliary sheaves assy can be provide as the requirement. climbing assistor and falling-proof device can be installed according to various requirements

Besides, sheaves and bearing are interchangeable with its matched crown block.

Note: Customized design and configuration is available to meet different requirements

Sheave features:

1) Material: Q235B, Q345B, 35#, 45#

2) Heat treatment :hardening and tempering,high frequency quenching,carburizing quenching and so on.

3) S45C groove surface quench: HRC45-55

4) Groove surface quench depth: ≥2mm

5) Max processing diameter: 2,000mm

6) Short production period

7) Inspection:all items are checked and tested thoroughly during every working procedure and after

the product is finally manufactured to ensure that best quality product goes out in the market.

8) good quality with reasonable price,timely delivery and great customer service.