HDS/HDP/RTM4/RTS4 Roller Kelly Bushings
According to the drive method, this range of roller kelly bushing is classified into square drive and pin drive types. Based on the capacity, the product is divided into heavy duty, medium duty and light duty types.
These roller kelly bushings are applicable for rotary tables with diameter between 171/2 and 491/2 inches. They are designed and manufactured in accordance with API Spec 7K specifications for drilling and well servicing equipment.
|Model||Type||Drive System||Applicable Size of Kelly Bar|
|Heavy duty type||Square drive system||21/2-6||3-6|
|Pin drive system||21/2-6||3-6|
|Medium duty type||Square drive system||21/2-51/4||3-41/4|
|Light duty type||21/2-41/4||3-41/4|
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