ROLLER KELLY BUSHING

E-MAIL: irislea@sj-drilling.com;irislea@163.com

Roller Kelly bushing is one of the necessary tools for oil drilling operation, which is fixed at the big bushing to pass the torque to the down hole drilling tools.

According to the driving mode, it could be divided into square drive type and pin drive type. According to the Kelly, there are square Kelly bushing and hexagonal Kelly bushing. It mainly consists of roof cover, bottom cover, axle pin, roller, fastening bolt and seal, etc.

There are four pieces of roller in the bushing which have needle bearing inside the rollers and fastened between roof and bottom cover by and pin and seals at both ends of rollers to prevent the drilling fluid from percolating. There is a stop pin fixed in the seal body to prevent rotating.

The axles of roller is fixed by four pieces of bolt M38 which tightening torque is 2KN·m. There are four hexagon socket screw fixed the top of four large bolts with the covers tightly to avoid loosening.

SQUARE DRIVE ROLLER KELLY BUSHING

      

       PIN  DRIVE ROLLER KELLY BUSHING

HEILONGJIANG NORTH SHUANGJIA DRILLING TOOLS CO., LTD.

Iris lea

Sales Manager

International Marketing Dept.

Add: No.56, Xingye Road, Yangming District，Mudanjiang City, Heilongjiang P.R, China       
E-mail:irislea@163.com；irislea@sj-drilling.com
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