Multiquip 21898 Hydraulic Motor Kit Danfoss - OEM Replacement Part

The hydraulic motor kit powers the rotor drive system on Multiquip STX-Series ride-on power trowels, converting hydraulic pressure from the engine-powered hydrostatic pumps into mechanical rotation of the spider assembly and blade rotors. Each STX-Series trowel uses independent hydrostatic drive motors coupled directly to the spider assembly, making this a critical component for floating and finishing concrete slabs. This Danfoss hydraulic motor kit includes all necessary components for a complete motor replacement.

The STX-Series design features dual rotor heads with six blades per rotor equally spaced in a radial pattern, all driven by these hydraulic motors. The motors work in conjunction with the dual palm grip joystick controls and three hydraulic steering cylinders to provide precise directional control during concrete finishing operations. When hydraulic motors fail, symptoms typically include loss of rotor speed, uneven blade rotation, unusual noise during operation, or complete loss of drive power to one or both rotors.

This kit is specifically engineered for the STX55J6 model and ensures proper hydrostatic drive performance for both floating and finishing phases of concrete work.

Compatible Models:

• STX55J6

Genuine Multiquip OEM part, sold by an authorized dealer.