Specifications

1.high strength steel shapes & plates
2. A deviation fast-line sheave.
3.sand line sheaves and auxiliary sheaves

Specifications

Drilling Rig Low Air Pressure Portable Crawler Crown Block 
1.ISO certification drilling rigs 
2.Top quality in china 
3.API 8A

Crown Block

 

Features:

1.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.

 

2.A deviation fast-line sheave.

 

3.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.

 

4.All sheaves had double-row conical roller bearings and each bearing has individual lubricating channel.

 

5.The rope guard prevents the wire rope from running out of the sheaves grooves.

 

6.  Equipped with a gin pole for use in repairing the sheaves cluster.

 

7.  Equipped with sand line sheaves and auxiliary sheaves.

 

8.  The sheaves and the bearing are interchangeable with those of matching travelling block.

 

9.  The crown blocks conform to API Spec. 4F,8A/8C and API monogram is permitted to be used.

The main technical performance and specification for crown block

Model		TC90	TC158	TC170	TC225	TC315	TC450	TC585	TC675	TC675H	TC900
Max. hook load KN(lbs)		900 (200000)	1580 (351111)	1700 (374000)	2250 (500000)	3150 (700000)	4500 (1000000)	5850 (1300000)	6750 (1500000)	6750 (1500000)	9000 (2000000)
Dia. of wire line mm(in)		26(1”)	29(1-1/8”)	29(1-1/8”)	32(1-1/4”)	35(1-3/8”)	38(1-1/2”)	38(1-1/2”)	45(1-3/4”)	38(1-1/2”)	48(1-7/8”)
OD of sheave mm(in)		762(30”)	915(36”)	1005(40”)	1120(44”)	1270(50”)	1524(60”)	1524(60”)	1524(60”)	1524(60”)	1829(72”)
No. of sheave		5	6	6	6	7	7	7	8	8	8
Size mm	Length	2580	2220	2620	2667	3192	3410	3625	4650	5180	4217
	Width	2076	2144	2203	2709	2783	2753	2832	3340	3642	3606
	Height	1578	1813	1712	2469	2350	2420	2580	2702	2904	3146
Weight Kg		3000	3603	3825	6500	8500	11105	11310	13750	19700	19150