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      You are  >> All >> Rig Accessories >> Lake-API4F-Crown Block >> Oil Well Crown Block
 
  

 

   The crown frame is made of high strength steel shapes.Sheave grooves are hardened by medium frequency induction to provide extended service life.Working sheaves have double-row conical roller bearings and each bearing is individually lubricated.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 frame crane for use when repairing the sheave groups Equipped with sand line sheaves and auxiliary sheaves.The sheaves and bearings are interchangeable with those of matching traveling block The crown blocks conform to API specification 4F.

 

Model

TC30

TC50

TC90

TC135

TC170

TC225

TC315

TC450

Max Hook Load (KN)

300

500

900

1350

1700

2250

3150

4500

Dia of Wire Line (mm)

24

24

26

29

29

32

35

38

OD of Sheaves (mm)

475

610

762

1005

1005

1120

1270

1524

Number of Sheaves

4

5

5

5

6

6

7

7

Size
(mm)

Length

738

860

2447

2320

2668

2668

3112

3410

Width

472

670

1695

1436

2460

2709

2783

2753

Height

575

588

1624

1781

1855

2469

2800

2938

Weight (kg)

245

464

3260

2775

4540

5650

7600

11012

 
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  • Pdf: API4F-crown block.pdf

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