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Index ※ Bushings ※ Roller Kelly Bushings
Roller Kelly Bushings
    Publish time 2014-08-28 13:25    

Roller Kelly Bushings can be classed as two types based on different ways of drive, square drive and pin drive. Also they can be classed as three types based on different style, heavy, medium and light-duty. They are used for 17.1/2 to 49.1/2inch rotary tables. They are designed and manufactured according to API Spec 7K.

Roller Kelly Bushings

Model

Type

Drive Way

Applicable Size of Kelly(in)

Squsre(in)

Hexagon(in)

HDS

Heavy duty

Square drive

2.1/2-6

3-6

27-HDP

Pin drive

2.1/2-6

3-6

20-HDP

Pin drive

2.1/2-6

3-6

4KRVS

Medium duty

Square drive

2.1/2-5.1/4

3-4.1/4

20-HDP

Pin drive

2.1/2-5.1/4

3-4.1/4

17-HDP

Pin drive

2.1/2-5.1/4

3-4.1/4

4KRBM

Light duty

Square drive

2.1/2-5.1/4

3-4.1/4


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