Bridgeport Step Pulley Mill Motor Locknut Assembly
Replace worn or missing motor lock components with this complete motor locknut assembly for American-made Bridgeport step pulley milling machines. This assembly installs on the step pulley top housing and allows the motor to be securely adjusted and locked in place for proper belt tension.
The stud features 1/2″-13 threads on one end and 3/8″-24 threads on the other, matching the original Bridgeport design.
Specifications
- Fits American-made Bridgeport step pulley milling machines
- Mounting Location: Step pulley top housing
- Stud Thread Sizes:
- 1/2″-13 (one end)
- 3/8″-24 (opposite end)
Kit Includes
- Motor Lock Stud – OEM #2190173
- Motor Locknut – OEM #2193541
- Motor Lock Handle – OEM #2190172
- Ball Handle – OEM #1192151
- Hex Nut – OEM #1191796
- Lock Washer – OEM #1191922
Features
- Complete replacement motor locknut assembly
- Direct replacement for original OEM components
- Helps maintain proper motor positioning and belt tension
- Precision-manufactured for an accurate fit
- Ideal for machine maintenance, repairs, and restoration
Please verify your machine model and OEM part numbers before ordering to ensure compatibility.






