Oilfield Wellhead Equipment Tubular Handling Tools Pin Drive Roller Kelly Bushing

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Oilfield Wellhead Equipment Tubular Handling Tools Pin Drive Roller Kelly Bushing

Roller Kelly Bushings can be classified as two types based on different ways of drive, square drive and pin drive. Also they can be classified 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.

 

Features of  Roller kelly bushing:
1. Roller kelly bushing is a necessary tool for drilling.
2. It is to drive kelly spinner by matching with master bushing. Through rotating of four rollers, the friction between rollers and kelly pipe is reduced and service life is extended.
3. For different sizes of kelly pipe and hexagonal pipe only need to change corresponding rollers.
To connect with rotary table, there are two transmission styles (square and pin).
4.The product is designed and manufactured according to API Spec 7K “Specification for Drill Equipment.

Some More Models and details:

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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