Multiquip 120281 Jackshaft Assembly - OEM Replacement Part for Concrete Saws

The jackshaft assembly is a critical drive component that transfers power from the engine to the cutting blade system on Multiquip walk-behind concrete saws. This assembly ensures proper blade rotation speed and torque delivery during demanding cutting operations.

Designed specifically for the SP6457 model, this OEM jackshaft assembly integrates with the saw's front axle system, which includes multiple lubrication points that require maintenance every 50 hours of operation. The front axle assembly features five grease fittings—including front axle pivot bearings and hydraulic lift cylinder ends—that must be serviced with premium grade waterproof E.P. (extreme pressure) grease to ensure optimal performance and longevity of connected drive components like this jackshaft.

Common symptoms indicating jackshaft replacement include abnormal vibration during operation, inconsistent blade speed, unusual grinding noises from the drive system, or visible wear on shaft bearings and mounting points. Regular inspection during the 50-hour lubrication service intervals helps identify wear before catastrophic failure occurs.

Compatible Models:

• Multiquip SP6457

Genuine Multiquip OEM part, sold by an authorized dealer.