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Product Details
Roller Kelly Bushings
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Roller Kelly Bushings

Detail

Product Description

The Roller Kelly bushing ia a necessary tool tor drilling,by matching with the rotary square to drive Kelly pipe.The product can reduce its friction with Kelly by rotation of four rollers and extend its service life .Change different rollers to match with different square and hexagonal Kelly pipes and connect with different rotary tables .Two transmission styles(square and pinconnect)are available.The product is designed and manufactured according to API Spec 7k”Specification for Drill Equipment”.


Product Parameters


Model

Type

Max. Torque(N*m)

Drive Mode

Size range of kelly(in)





Square

Hexagon

HDS

Heavy-duty

27000

Square

3-6

3-6

20-HDP


32340

Pin

3-6

3-6

27-HDP



Pin

3-6

3-6

MDS

Medium-duty

22540

Square

2 1/2 -5 1/4

3-4 1/4

17-HDP



Pin

2 1/2 -5 1/4

3-4 1/4

20-HDP



Pin

2 1/2 -5 1/4

3-4 1/4

LDS

Light-duty

13720

Square

2 1/2 -5 1/4

3-4 1/4