Oil Well Drilling Rig Spare Parts API 4f Crown Block

• After-sales Service: Provided
• Warranty: 12 Months
• Manufacturing Process: Casting
• Surface Treatment: Spray-Paint
• Operation Pressure: N/M
• Application: Oil and Gas Drilling
• Model NO.: BBTC60~450
• Sizes: 7/8" ~ 1-1/2"
• Machine Type: Drilling Equipment
• Transport Package: Wooden Box
• Specification: According to specifications
• Trademark: BOBAN & OEM
• Origin: China Mainland
• HS Code: 8431431000
• Production Capacity: 200 Sets Per Month

Product Description

Product Description

BOBAN 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 and Benefits

* 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 derrickman 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.

 

Product Parameters

Model	Travelling system	Drilling line diameter (in)	Load (lbf)	Main sheave diameter (in)	Fastline sheave diameter (in)	Sandline sheave diameter (in)	Overall Dimension(ft)	Self-weight(lb)
TC60	3×2	7/8	134885	19.68	19.68		5.37×4.36×4.89	1305
TC70	4×3	7/8	157366	24.02	24.02		4.86×2.05×2.07	1598
TC90C	4×3	1	202328	24.02	24.02		4.46×3.28×4.1	1764
TC135	4×3	1	303492	29.92	36.02		6×4.95×4.27	2866
TC158	5×4	1;1 1/8	355198	29.92	36.02	19.68	7.64×4.69×4.82	3263
TC158	6×5	1;1 1/8	355198	29.92	36.02	19.68	7.64×5.38×4.82	3472
*TC160	4×3	1 1/8	359694	36.02	36.02	19.68	2.23×3.23×3.41	4393
*TC170C	5×4	1 1/4	382175	36.02	44.09	15.75	7.97×3.28×4.43	6095
*TC180D	6×5	1 1/4	404656	36.02	36.02		8.14×2.7×3.18	4574
*TC225	6×5	1 1/4	505820	44.09	50		8.14×2.7×3.18	12306
TC225	6×5	1 1/4	505820	36.02	36.02	19.68	6.56×4.59×4.43	5158
*TC315	7×6	1 3/8	708148	50	60	30	12.84×10×9.24	19294
*TC450	7×6	1 1/2	111640	60	60	29.92	11.38×10×9.8	21459
Note: * Marked items for the mast of skid-mounted drilling rig.