API Spec 7K Standard High Quality Roller Kelly Bushings with Square Kelly
Product Description
Roller kelly bushings
Roller Kelly Bushings can be classified as two types based on different ways of drive, square drive and pin drive. Also they can be classified as three types based on different styles, heavy, medium and light-duty.They are used for 17/ to 49/ inch rotary tables. They are designed and manufactured according to API Spec 7K Specification for drilling and well servicing equipment.
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| Model | Rotary table size(in) |
| HDS | Heavy Duty |
| 27-HDP | |
| 20-HDP | |
| RTM4 | Medium Duty |
| RTS4 | Light Duty |