Specifications

Meet API Spec 8A/8C standard
CE/ISO certificate.
Top quality and best price.
Roller kelly bushing

  Roller kelly bushing

 

1.Roller kelly bushing is a necessary tool for drilling, by matching with rotary square to drive kelly pipe. 

 

2. Through the rotation of four rolls, the friction between rolls and kelly pipes is reduced to extend service life. 

 

3. Change different rollers to match with different squares and hexagona l kelly pipes and connect with different rotary tables. 

 

4. Two transmission styles (square and pinconnect) are available. The product is designed and manufactured according to API Spec 7K “Specification for Drill Equipment” 

 

  

Model

HDS

27-HDP

20-HDP

MDS

20-MDP

17-MDP

LDS

Type

Heavy

Medium

Light

Max.torque

N.m

32365

22555

13729

ft.lbf

23871

16636

10126

Drive Mode

Square

Pin

Square

Pin

Square

Square

mm

76.2~152.4

63.5~133.35

63.5~133.35

in

3~6

21/2~51/4

21/2~51/4

Hex

mm

76.2~152.4

76.2~107.95

76.2~107.95

in

3~6

3~41/4

3~41/4

Size

mm

630×630×740

630×630×780

493×493×696

510×510×720

458×458×700

508×508×700

in

24.8×24.8×29.1

24.8×24.8×30.7

19.4×19.4×27.4

20×20×28.3

18×18×27.5

20×20×27.5

Weight

Kg

700

730

670

420

460

340

400

lb

1540

1610

1470

924

1012

750

808

 

 

 

 

 

 

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