Multiquip 42219 Coupler Hayes 15T B Mount - OEM Replacement Part

The Hayes 15-tooth B-mount coupler is a critical transmission component that connects the hydraulic motor to the spider assembly on ride-on power trowels, transferring rotational power to the trowel arms and blades during concrete finishing operations. This precision-engineered coupling ensures smooth power delivery while accommodating the alignment requirements of the spider drive system.

Designed for the demanding environment of professional concrete finishing, this coupler mount interfaces directly with the hydraulic motor assembly that rotates the spider. Each spider assembly contains six trowel arms with 8-inch combination blades equally spaced in a radial pattern. The 15-tooth configuration provides the proper gear ratio for optimal blade speed control during both floating and finishing operations. Signs of coupler wear include unusual vibration, difficulty controlling blade pitch, inconsistent spider rotation, or abnormal noise from the drive system during operation.

Compatible with the following Multiquip model:

• STXDF

Genuine Multiquip OEM part, sold by an authorized dealer.