API 7K Roller Kelly Bushing
Specifications
1.Roller kelly Bushing2.API 7K
3.style: squre and pin

Roller Kelly Bushing
1.Size:17 1/2-49 1/2 inch;
2.Roller Kelly Bushings are designed and manufactured according to API Spec 7K.
3.Roller Kelly Bushings have type:Heavy,Medium,Light-duty
4.Suitable for Kelly:Square(in),Hex.(in)
The details are as bellow:
Model |
Type |
Way of driver |
Suitable for Kelly |
|
Square(in) |
Hex.(in) |
|||
HDS |
Heavy |
Square Drive |
3-6 |
3-6 |
27-HDP |
Pin Driver |
3-6 |
3-6 |
|
20-HDP |
Pin Driver |
3-6 |
3-6 |
|
M4 |
Medium |
Square Drive |
21/2-51/4 |
3-41/4 |
20-MDP |
Pin Driver |
21/2-41/4 |
3-41/4 |
|
17-MDP |
Pin Driver |
21/2-41/4 |
3-41/4 |
|
S4 |
Light-duty |
Square Drive |
21/2-41/4 |
3-41/4 |
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