MS05-2-133-F05-1720-EJ00 Poclain Radial Piston Motor 133cc 450bar

Product Overview

The MS05-2-133-F05-1720-EJ00 is a radial piston hydraulic motor from the Poclain MS05/MSE05 series, configured with an F05 flange and the 1720 wheel-mount interface. With a displacement of 133 cc/rev, it delivers rated working pressure of 400 bar and peak pressure up to 450 bar, producing maximum torque of approximately 2,000 N·m at 29 kW maximum power. The modular architecture — comprising output, distribution, function, and brake modules — enables flexible machine integration and simplified hydraulic circuit design.

This motor is engineered as a direct interchange replacement for the original Poclain unit. Mounting dimensions, shaft interface, and port positions are identical to the OEM specification, allowing drop-in replacement without hose or bracket modification. Every unit undergoes 100% simulated duty-cycle testing prior to shipment, including full-pressure cycling, thermal balance verification, and shock-load validation.

Technical Specifications 

• Model: MS05-2-133-F05-1720-EJ00

• Series: Poclain MS05 / MSE05

• Motor type: Radial piston, low-speed high-torque

• Displacement group: MS05-2 (133 cc/rev configuration)

• Rated pressure: 400 bar

• Peak pressure: 450 bar (6,527 PSI)

• Maximum torque: Approximately 2,000 N·m at 400 bar

• Maximum power: 29 kW (MS05/MSE05 direct-drive rating)

• Maximum speed: 700 RPM (series maximum)

• Mounting flange: F05

• Configuration code: 1720 (wheel-mount interface)

• Control type: Fixed displacement (full displacement operation)

• Weight: Approximately 40 kg (reference: MS05-0 equivalent)

• Bearing type: Biconical roller bearing, radial and axial load capable

• Brake option: Multi-disc parking brake available

Key Technical Advantages

① Biconical Roller Bearing Output Module — Superior Combined Load Capacity
The output module employs a biconical roller bearing arrangement that accommodates significantly higher radial and axial loads than conventional cylindrical roller bearings. In wheel-drive applications, steering forces and road-induced shock loads act simultaneously on the bearing; this design substantially reduces the risk of premature bearing failure and extends overhaul intervals.

② Disc-Type Distribution Module with Automatic Wear Compensation — Sustained Volumetric Efficiency
The disc flow-distribution module incorporates an automatic wear-compensation mechanism. As operating hours accumulate, the clearance between the distribution disc and cylinder block face is continuously compensated by an elastic preload system, preventing internal leakage from increasing over time. This ensures the motor maintains near-initial volumetric efficiency over thousands of operating hours — a critical advantage for travel-drive systems requiring consistent output.

③ Sliding-Shoe Function Module — Low Friction, High Impact Resistance
The function module utilizes a sliding-shoe design characterized by high load capacity, friction resistance, and thermal stability. The hydrodynamic lubrication film between the shoe and stator curve minimizes mechanical friction losses. The optimized stator curve profile improves low-speed smoothness, suppresses stick-slip behavior, and enhances resistance to hydraulic shock events.

④ Modular Architecture — Serviceability and Configuration Flexibility
The motor is assembled from four independent modules: output, distribution, function, and brake. Field service requires only the failed module to be replaced rather than a complete motor teardown, dramatically reducing machine downtime. Configuration flexibility allows customers to specify brake presence, shaft type, and port orientation to match specific application requirements.

Application Areas

• Skid steer loader wheel-drive systems

• Compact tracked excavator travel drives

• Forklift and telehandler drive axles

• Underground LHD (load-haul-dump) travel motors

• Agricultural machinery travel drives (combine harvesters, cotton pickers)

• Street sweepers and municipal specialty vehicles

• Port tractors and heavy-duty material handling equipment

Expert Maintenance Tips

Pre-Installation Inspection: Verify flatness and cleanliness of the F05 flange mating surface; remove burrs and residual sealant. For wheel-mount (1720) configurations, ensure wheel hub-to-output flange coaxiality within 0.05 mm. Excessive misalignment causes bearing edge loading and premature seal wear.

First Commissioning: The motor casing must be primed with hydraulic oil before initial operation. Fill through the highest casing port until oil overflows from the level port. Starting a dry motor causes metal-to-metal contact between the distribution disc and cylinder block face under no lubrication, resulting in irreversible damage.

Fluid Cleanliness: Maintain system oil cleanliness at NAS 8 (ISO 4406 18/16/13) or better. The distribution disc clearance is highly sensitive to particulate contamination; excessive contamination accelerates depletion of the wear-compensation travel and shortens the volumetric efficiency retention period.

Scheduled Inspection: Check casing drain flow every 500 operating hours. Under normal conditions, drain flow should stabilize at 2–5 L/min depending on oil temperature and speed. A sustained increase in drain flow indicates the wear-compensation travel is approaching its limit, and preventive maintenance should be scheduled. Inspect the output flange area for oil seepage; replace seals at the first sign of degradation.