Roller Kelly Bushing

Features

  1. API certified products all parts traceable
  2. Deviled into two types Square and pin drive, Also Heavy, medium, and light-weight types available
  3. National best quality assured.
  4. Single structure easy to operation

Description

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 into three types based on different styles, 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.

Specification

Drawing:

Model Type Drive way Applicable size of kelly(in)
Square Hex
HDS Heavy duty Square drive 2 1/2"-6" 3"-6"
27-HDP Pin drive 2 1/2"-6" 3"-6"
20-HDP 3"-6"
RTM4 Medium duty Square drive 2 1/2"-5 1/4" 3"-4 1/4"
RTS4 Light duty 2 1/2"-4 1/4" 3”-4 1/4"
drawing

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