ROLLER KELLY BUSHING
- PRODUCT DETAIL
Roller
Kelly Bushings can be classified as two types based on different ways of drive:
Square Drive and Pin Drive. They can also be classified as three types based on
different styles: Heavy, Medium and Light-Duty. They are used for 17-1/2” to
49-1/2” Rotary Tables. They are designed and manufactured according to API SPEC
7K Specification for drilling and well servicing equipment.
Main Technical Parameters
|
Model |
Type |
Drive Way |
Applicable Size of Kelly in |
|
|
HDS |
Heavy Duty |
Square Drive |
2-1/2~6 |
3~6 |
|
27-HDP |
Pin Drive |
2-1/2~6 |
3~6 |
|
|
20-HDP |
2-1/2~6 |
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 |
|
