Roller Kelly Bushing

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

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roller kelly bushing hdp roller kelly bushing for rotary table square drive roller kelly bushing api 7k roller kelly bushing api roller kelly bushing hdp type roller kelly bushing hds roller kelly bushing heavy duty roller kelly bushing mdp roller kelly bushing

Product Description

Technical Specification

Drawing

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.

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″