| Customization: | Available |
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| After-sales Service: | 1 Year |
| Warranty: | 1 Year |
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Master bushings can be divided into three kinds of structure, hinged, solid or split. There are two kind of diving way, pin and Square. It is adapted to rotary table by size from 17 1/2 to 37 1/2(49 1/2 in) respectively. When insert bowl is assembled,(some haven't insert Bowl), it can be connected with rotary slips and roller kelly bushing that are manufactured accordance with API Spec 7k.
| Model | Rotary table size(in) | Insert bowl | Tubulars OD(in) |
| MSS(Solid) | 17 1/2-23 | Insert bowl 1011 | 2 3/8-7 5/8 |
| Extended insert bowl 1024 | 2 3/8-8 5/8 | ||
| 27-1/2 | Insert bowl 1022 | 2 3/8-7 5/8 | |
| Extended insert bowl 1025 | 2 3/8-8 5/8 | ||
| Insert bowl 1026 | 9 5/8-10 3/4 | ||
| Insert bowl 2002 | 11 3/4-13 3/8 | ||
| MSS(Split) | 17 1/2-27 1/2 | - | 2 3/8-7 5/8 |
| MSPC(Solid) | 20 1/2-22 1/2 | Insert bowl 1809 | 2 3/8-8 5/8 |
| Insert bowl 1902 | 9 5/8-10 3/4 | ||
| Master bushing1805-1 | 11 3/4-13 3/8 | ||
| Master bushing19333 | 11 3/4-13 3/8 | ||
| 23-27 1/2 | No.3 Insert bowl 1810 | 2 3/8-8 5/8 | |
| No.2 Insert bowl 1904 | 9 5/8-10 3/4 | ||
| No.1 Insert bowl 1903 | 11 3/4-13 3/8 | ||
| MDSP(Split) | 17 1/2-20 1/2 | - | 2 3/8-8 5/8 |
| MSP(Split) | 27 1/2 | - | 2 3/8-8 5/8 |
| MPCH | 37 1/2 | No.3 Insert bowl 6608 | 2 3/8-8 5/8 |
| No.2 Insert bowl 6609 | 9 5/8-10 3/4 | ||
| No.1 Insert bowl 6610 | 11 3/4-13 3/8 | ||
| 49 1/2 | MPCH37 1/2 | 2 3/8-13 3/8 |
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