The Pin Drive Roller Kelly Bushing

Date: 26 Jan 2010
The Pin Drive Roller Kelly Bushing is made up of top cap ,bottom seat ,shaft,roller
floating ring ,transmission pins,fixed bolts,iol cup,etc.
  Pulling out or feeding off string can be done while roatating;
  Because of its integral construction,it can not fly out and hurts you;
  The bushing is easily installed into the master bushing ,maintaining good alignment;
  The contact between kelly and roller is rolling contact,so friction is lower, and weight
on bit is accurate.
Contact information:
Company:
Address:
Mudanjiang Xinbeifang Petroleum Drilling Tool Co., Ltd
No. 138, Yangming Street, Mudanjiang City, Heilongjiang Province, China[157013]
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