| Customization: | Available |
|---|---|
| After-sales Service: | Provided |
| Warranty: | 12 Months |
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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.
* 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.
|
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.
|
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