Casting Drilling Rig Components Oil Well Drilling Rig API 4F Crown Block

Drilling Rig Components Oil Well Drilling Rig API 4F Crown Block

Product Application

The crown block consists of crown basement, fast-line sheave, dead-line sheave, main sheave, sand-line sheave, drilling line protector and

sheaves for hydraulic and air winch, bumper wood for the Crown-O-Matic and guardrail. It's designed with closed type and open type. The

traveling system is divided into 7×6, 6×5, 5×4, and 4×3, which fit to Φ7/8"~Φ1 1/2" drilling lines. The sheave groove conforms to the requirements

of API RP 9B. The sheave groove surface is processed with a quenching treatment. The bearing adopts centralized lubrication for convenient

operation.

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. The crown block is equipped with metal

base plate, handrail, and toeboard. A ladder has an opening.

* A deviation fast-line sheave.

* The sheave cluster is titled 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 improve 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 gain hole for use in repairing the sheaves cluster.

* Equipped with sand line sheaves and auxiliary sheaves.

* The sheaves and the bearings are interchangeable with those of matching travelling block.

* The crown blocks conform to API 4F 8A/8C.

Shaanxi FORUS Petroleum Machinery Equipment Co., Ltd is a professional exporter of oil drilling machinery and equipment ,we mainly engaged in

worldwide brands oil drilling equipments and accessories etc.

Our goal is to meet the different needs of customers, to provide high quality products and the best service. We have a professional team to ensure

fast response, delivery in strict accordance with the delivery date, to meet the production needs of customers. Integrity is the cornerstone of our

development, we guarantee the quality, the products that we sold must meet the requirements of customers.

Our products are exported to Kuwait, UAE, Egypt, Indonesia, Russia, the United States, Kazakhstan and other countries and regions, the products

have been well received among customers and get long-term foreign trust.