Master Bushing

Master Bushing
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The master bushing is intended to work together with kelly bushing to drive drill string, and it is manufactured strictly following API Spec 7K, ISO9001:2008 and ISO14001:2004 standards.

Feature
1. Manufactured from alloy steel castings, our rotary table master bushing (including insert bowl) is available from 171/2to 371/2 inches.

2. According to its structure, our master bushing is divided into two types which are solid type and split type.

3. Based on drive method, our product is classified into pin drive master bushing and square drive master bushing, and it fits well for API rated rotary slip, casing slip, drill collar slip and kelly bushing.

Technical Data of Master Bushing
ProductRotary table size (inch)Insert bowlTubular OD (inch)
MSS master bushing (solid body/split body)171/2API bowl 101123/8-85/8
EXT. bowl 1024
201/2API bowl 101123/8-85/8
EXT. bowl 1024
271/2API bowl 102223/8-85/8
EXT. bowl 1025
Insert bowl 102695/8-103/4
MDSP master bushing (split body)171/2EXT. No.3 taper23/8-85/8
201/2EXT. No.3 taper23/8-85/8
MSPC master bushing (solid body)201/2EXT. bowl 180923/8-85/8
bowl 190295/8-103/4
Body only 1805113/4-133/8
271/2Bowl 1810 (No.3)23/8-85/8
Bowl 1904 (No.2)95/8-103/4
Bowl 1903 (No.1)113/4-133/8
MSP master bushing (split body)271/2EXT. No.3 taper23/8-85/8
MPCH master bushing371/2Bowl 6608(No3)23/8-85/8
Bowl 6609 (No.2)95/8-103/4
Bowl 6610 (No.1)113/4-133/8
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