There are four types master bushings, such as MSS、MDSP、MSPC、MPCH type and so on .
Apply to rotary table size is 17.1/2-49.1/2inch and they can be changed into the famous company’s
Products such as National、Oilwell、Emsco、Ideco、Gardner Company and so on .
Design and manufacture by API SPEC 7k.
Model of bushing | Rotary table size （in） | Liner
| Diameter （in） |
MSS fission Square drive
| 17.1/2 | 2.3/8-8.5/8 | |
18 | |||
20.1/2 | |||
23 | |||
27.1/2 | |||
MSS Entirety Square drive | 17.1/2 | 1011 | 2.3/8-7.5/8 |
1024 | 2.3/8-8.5/8 | ||
20.1/2 | 1011 | 2.3/8-7.5/8 | |
1024 | 2.3/8-8.5/8 | ||
22 | 1011 | 2.3/8-7.5/8 | |
1024 | 2.3/8-8.5/8 | ||
23 | 1011 | 2.3/8-7.5/8 | |
1024 | 2.3/8-8.5/8 | ||
27.1/2 | 1022 | 2.3/8-7.5/8 | |
1025 | 2.3/8-8.5/8 | ||
1026 | 9.5/8-10.3/4 | ||
MDSP fission PIN DRIVE | 17.1/2 | - | 2.3/8-8.5/8 |
20.1/2 | 2.3/8-8.5/8 | ||
MSPC Entirety PIN DRIVE | 20.1/2 | Bowl 1809 | 2.3/8-8.5/8 |
Bowl 1902 | 9.5/8-10.3/4 | ||
Body only 1805 | 11.3/4-13.3/8 | ||
23 | Bowl 1810(No3) | 2.3/8-8.5/8 | |
Bowl 1904(No2) | 9.5/8-10.3/4 | ||
Bowl 1903(No1) | 11.3/4-13.3/8 | ||
27.1/2 | Bowl 1810(No3) | 2.3/8-8.5/8 | |
Bowl 1904(No2) | 9.5/8-10.3/4 | ||
Bowl 1903(No1) | 11.3/4-13.3/8 | ||
MSP fission PIN DRIVE | 27.1/2 | - | 2.3/8-8.5/8 |
MPCH PIN DRIVE | 37.1/2 | Bowl 6608(No3) | 2.3/8-8.5/8 |
Bowl 6609(No2) | 9.5/8-10.3/4 | ||
Bowl 3310(No1) | 11.3/4-13.3/8 | ||
49.1/2 | MPCH37.1/2+Bowl6608 (No3) | 2.3/8-8.5/8 | |
MPCH37.1/2+Bowl 6609(No2) | 9.5/8-10.3/4 | ||
MPCH37.1/2+Bowl 6610(No1) | 11.3/4-13.3/8 |