A10FM Series 52 replacement axial piston fixed motor is a dependable drive solution for mobile and industrial hydraulic systems. Designed for applications requiring stable rotary power, it converts hydraulic flow and pressure into consistent speed and torque. This hydraulic piston motor is well suited for equipment repairs, system upgrades and OEM replacement projects where efficient operation, proven compatibility and long-term reliability are essential.
1. Open and Closed Circuit Compatibility: Suitable for a wide range of mobile and industrial hydrostatic drive systems.
2. Reliable High-Pressure Performance: Rated for 280 bar nominal pressure and up to 350 bar maximum pressure.
3. Compact, Space-Saving Installation: High power-to-weight ratio with an optional plug-in version for restricted installation spaces.
4. Low Noise and Long Service Life: Proven rotary group technology supports reliable performance under demanding operating conditions.
5. Flexible Connection Options: Mechanical and hydraulic connections are available according to SAE standards.
FAQ
Q1. Does an axial piston fixed motor need a case drain line?
Most axial piston fixed motors require a separate case drain line to return internal leakage oil to the reservoir. The drain line should have low resistance, and the highest available drain port is normally used so the motor housing remains full of oil. Excessive case pressure can damage seals and cause external leakage, so always follow the pressure limit in the motor datasheet.
Q2. What hydraulic oil should be used in an axial piston motor?
Use a hydraulic fluid approved for the motor and suitable for the system’s operating temperature. The correct viscosity should be maintained at the motor’s actual working temperature, not selected only from the ambient temperature. Oil that is too thin can increase internal leakage, while oil that is too thick may cause poor lubrication and high case pressure during cold starts.
Q3. How clean should the hydraulic oil be?
Clean oil is essential because the piston, cylinder block and valve plate operate with very small internal clearances. Many hydrostatic piston systems specify an oil cleanliness level around ISO 4406 22/18/13 or better, although the exact requirement should come from the motor manufacturer. Replace contaminated oil and filters, and flush hoses and valves before installing a new hydraulic piston motor.
Q4. What should be done before starting a new hydraulic piston motor?
Fill the motor housing with clean, filtered hydraulic oil through the uppermost case drain port and remove trapped air before startup. Begin at low speed and light load, then check for leakage, abnormal sound, unstable rotation and excessive case pressure. Starting the motor with an empty housing can leave the rotary group and bearings without adequate lubrication.
Q5. What does excessive case drain flow mean?
Case drain flow normally increases as system pressure and oil temperature rise. However, a noticeable increase under the same operating conditions may indicate internal leakage or wear in the rotating group. Before replacing the motor, check the oil viscosity, operating temperature, drain-line restriction and case pressure, as these conditions can also affect the measured drain flow.
Q6. When is an anti-cavitation valve needed on a hydraulic motor?
An anti-cavitation valve is recommended when the load can continue driving the motor after the main oil supply is reduced or stopped. This commonly occurs in fan drives and other high-inertia applications. The valve supplies make-up oil to the low-pressure side, reducing the risk of cavitation during deceleration. The axial piston fixed motor on this product page is available with an integrated anti-cavitation valve option.
