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CROWN BLOCK

  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.

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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