Master Bushing for Rotary Table Systems
The master bushing is installed in the rotary table to connect slips and kelly bushings and transfer torque during drilling.
It supports drill string stability and slip performance, so proper sizing and machining are important for safe operation.
Manufactured to API Spec 7K, it works in both onshore and offshore rigs and is available in solid and split body types for different rotary systems.
Designed for Compatibility Across Rotary Systems
Different rigs require different drive mechanisms and insert configurations. Master bushings support:
- Pin drive systems
- Square drive systems
- Standard and extended insert bowls
- Multiple tubular OD ranges
Because of this flexibility, they remain a core component in modern rotary drilling systems.
Technical Features
Built for Heavy Rotary Loads
Manufactured from high-strength alloy steel casting to handle torque and drilling loads in rotary operations.
Solid and Split Body Options
Available in both configurations to match rig requirements and maintenance preferences.
API Spec 7K Compliance
Designed and manufactured according to international drilling equipment standards.
Slip and Insert Compatibility
Supports drill pipe slips, drill collar slips, casing slips, and rotary insert bowls.
Wide Size Coverage
Suitable for rotary table diameters from 17 1/2″ to 49 1/2″.
Why Master Bushing Selection Matters
Incorrect sizing leads to:
- slip instability
- vibration
- pipe wear
- torque loss
- Correct matching ensures:
- stable drilling
- proper load transfer
- longer equipment life
Request Technical Details
Provide your rotary table size, insert type, and drilling application.
Our team will recommend the correct master bushing model for your rig.
