Crown Blocks

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. A ladder has an opening.
• 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.
• All sheaves have double-row conical roller bearings and each bearing has individual lubricating channel.
• Equipped with wooden bumper blocks and retainer net.
• Equipped with a frame crane for use in repairing the sheaves cluster.
• 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.