Product Overview
The MS05-2-133-F05-1720-EJ00 is a mid-displacement radial piston hydraulic motor from the Poclain Hydraulics MS multipurpose motor series, MS05/MSE05 frame size. The motor employs a radial piston cam-lobe design in which working cylinders are arranged radially around a crankshaft, delivering high torque at low speeds. The MS05 series offers a maximum displacement of 750 cc, power output up to 50 kW, maximum speed of 700 rpm, and maximum working pressure of 450 bar (peak). The MS05-2-133-F05-1720-EJ00 specifically offers a displacement of 133 cm³/rev, maximum working pressure of 400 bar, maximum output torque of approximately 2,000 N·m, maximum power of 29 kW, and maximum speed of 700 rpm.
The MS05 series motor features a modular architecture comprising four major modules: output module (output shaft, flange, bearings), function module (pistons, cam ring), distribution module (valve plate, valve block), and brake module (parking/service brake). Each module can be independently configured and replaced. This design simplifies machine integration, enhances system flexibility, and reduces spare parts inventory complexity.
The model code decodes as: “MS05” = MS series 05 frame size, “2” = second-generation design, “133” = displacement group (133 cm³/rev), “F05” = flange mounting, “1720” = wheel-mount interface configuration code, “EJ00” = additional function and port configuration code. The MS05-2-133-R05-122R-EFJM in the original title is a shaft-mount variant (R05) within the same series, differing in mounting interface but sharing identical core hydraulic parameters.
The motor offers complete interchangeability: mounting flange (F05 wheel flange), output shaft, and port configuration are identical to the original Poclain specification, enabling drop-in replacement without hose or bracket modification. Every unit undergoes 100% simulated duty-cycle testing before shipment.
Series-Related Models: The Poclain MS multipurpose motor series spans MS02/MSE02 (max displacement 398 cc, max power 22 kW, max pressure 450 bar, max torque 2,500 N·m, max speed 900 rpm), MS05/MSE05 (max displacement 750 cc, max power 50 kW, max pressure 450 bar, max torque 4,770 N·m, max speed 700 rpm), and MS08/MSE08 (max displacement 1,248 cc, max power 41 kW, max pressure 450 bar, max torque 1,984 N·m @100 bar, max speed 210 rpm). The MSE series is the frame variant with integrated brake.
Technical Specifications
MS05-2-133-F05-1720-EJ00 (Primary Model)
Model: MS05-2-133-F05-1720-EJ00
Brand Series: Poclain Hydraulics MS Series / MS05-MSE05
Motor Type: Radial piston, low-speed high-torque, cam-lobe design
Displacement: 133 cm³/rev
Maximum Working Pressure: 400 bar (5,801 PSI)
Peak Pressure: 450 bar (6,527 PSI, MS05 series maximum)
Maximum Output Torque: Approximately 2,000 N·m
Maximum Power: 29 kW
Maximum Speed: 700 rpm
Mounting Flange: F05 wheel flange
Mounting Configuration Code: 1720 (wheel-mount interface)
Additional Configuration Code: EJ00
Series Maximum Displacement: 750 cc
Series Maximum Torque (@100 bar): 1,193 N·m
Series Maximum Power: 50 kW
Brake Options: Optional multi-disc parking brake / service brake
Anti-Skid Feature: Optional TwinLock™ integrated anti-skid system
Modular Design: Output, function, distribution, and brake modules
Operating Temperature Range: -20°C to +80°C (reference: MS series general data)
MS05-2-133-R05-122R-EFJM (Series Reference — Shaft-Mount Variant)
Model: MS05-2-133-R05-122R-EFJM
Brand Series: Poclain MS Series / MS05-MSE05
Displacement: 133 cm³/rev
Mounting Type: R05 shaft mount
Configuration Code: 122R-EFJM
Core Hydraulic Parameters: Same as F05 version (max pressure 400 bar, max torque approx. 2,000 N·m)
MS02/MSE02 (Series Reference)
Maximum Displacement: 398 cc/rev
Maximum Power: 22 kW
Maximum Pressure: 450 bar
Maximum Torque: 2,500 N·m
Maximum Speed: 900 rpm
Displacement Configurations: 1C, 2C available
MS08/MSE08 (Series Reference)
Maximum Displacement: 1,248 cc/rev
Maximum Power: 41 kW
Maximum Pressure: 450 bar
Maximum Torque (@100 bar): 1,984 N·m
Maximum Speed: 210 rpm
Displacement Configurations: 1C, 2C available
Key Technical Advantages
① Radial Piston Cam-Lobe Design — Low-Speed High Torque with Wide High-Efficiency Range
The MS05-2-133-F05-1720-EJ00 utilizes Poclain‘s tried and tested radial piston cam design, which is continually being improved. Working cylinders arranged radially around a crankshaft deliver high torque at extremely low speeds without requiring reduction gearing. MS series motors are highly efficient at any speed or operating pressure, operating reliably in demanding applications across construction, material handling, agriculture, mining, railway, and marine industries. For wheel-drive or tool-drive applications, this design simplifies the transmission chain while maintaining high torque output.
② Modular Architecture — Flexible Configuration and Simplified Maintenance
The MS05 motor features a modular design concept comprising output, function, distribution, and brake modules. Each module can be independently removed and replaced; field service requires only the failed module to be replaced rather than a complete motor teardown, dramatically reducing machine downtime. The output module employs biconical roller bearings capable of withstanding strong radial and axial combined loads. The modular architecture also enables customers to flexibly specify brake presence, shaft type, and port orientation, reducing spare parts inventory complexity and maintenance costs.
③ TwinLock™ Integrated Anti-Skid System — Traction Optimization
The MS05 series offers the optional Poclain-patented TwinLock™ integrated anti-skid system. This feature automatically distributes flow between the two displacement chambers of the two-speed motor; when one wheel loses traction, the system transfers torque to the wheel with grip, effectively preventing slippage and improving vehicle mobility on low-traction surfaces such as mud, sand, or slopes. For excavators, loaders, and other mobile machinery operating on challenging terrain, TwinLock™ significantly enhances operational safety and efficiency.
④ Integrated Brake System — Safe Parking and Smooth Braking
The MS05 series offers multiple integrated brake options including emergency brake, service brake, and parking brake. The negative-type multi-disc parking brake works in conjunction with the motor’s distribution module, automatically engaging at stop and releasing at start, and engaging automatically in the event of hydraulic pressure loss or failure to prevent rollback on slopes. The integrated brake system simplifies external piping and installation footprint while enhancing system safety and reliability.
⑤ Broad Interchange Compatibility and Series Selection
The MS05-2-133-F05-1720-EJ00‘s standardized mounting interface (F05 wheel flange) allows direct replacement of equivalent Poclain original motors. The MS series also offers 100% interchangeable complete machine replacement solutions covering all frame sizes — MS/MSE 02/05/08/11/18/25/35/50/83/125/250 — with mounting dimensions and internal components interchangeable with original Poclain products. Standardized interface design maintains mounting compatibility across different displacement sizes within the same series, facilitating equipment upgrades or displacement adjustments.
Application Areas
Construction Equipment: Skid steer loaders, compact wheel loaders, mini excavators, backhoe loaders
Material Handling: Telehandlers, forklifts, port tractors
Agricultural Machinery: Combine harvesters, cotton pickers, beet harvesters travel drives
Mining Equipment: Underground LHDs, mining trucks, drill rig travel drives
Railway Equipment: Track maintenance vehicles, railway crane travel drives
Marine & Offshore: Deck machinery, winch drives
Industrial Applications: Hydraulic transmission systems requiring low-speed high-torque direct drive
Expert Maintenance Tips
Pre-Installation Inspection: Verify flatness and cleanliness of the F05 wheel flange mating surface; check thread condition of mounting bolt holes. For wheel-mount (1720 configuration) applications, ensure wheel hub-to-output flange coaxiality within 0.05 mm; excessive misalignment causes bearing edge loading and premature seal wear. The splined output shaft-to-drive wheel fit should be free of interference. Use bolts of strength class 8.8 or higher, tightened in diagonal sequence to specified torque.
First Commissioning: The motor casing must be filled with clean hydraulic oil before initial start-up. Fill through the highest casing port until oil overflows from the level port. Dry starting causes metal-to-metal contact between piston-to-cam ring surfaces and the valve plate without lubrication, resulting in irreversible damage. For MS05 models equipped with integrated brakes, confirm the brake circuit has been properly bled to avoid delayed brake release.
Fluid Cleanliness: Maintain system oil cleanliness at NAS 8 (ISO 4406 18/16/13) or better. The radial piston motor‘s valve plate and piston pairs are sensitive to particulate contamination; excessive contamination accelerates wear and causes volumetric efficiency degradation. Inspect return filter elements regularly and replace per the machine manufacturer’s recommended interval.
Scheduled Inspection: Check casing drain flow and brake clearance every 500 operating hours. Under normal conditions, drain flow should remain stable; a sustained increase indicates accelerated wear of piston pairs or valve plate surfaces, and preventive maintenance should be scheduled. Inspect the output flange area for oil seepage; replace seals at the first sign of degradation. For TwinLock™-equipped models, periodically verify anti-skid function operation, confirming proper torque distribution under low-traction conditions.
Long-Term Storage Protection: If the motor will be idle for more than 3 months, fill the casing with rust-preventive hydraulic oil and manually rotate the shaft several turns monthly to prevent corrosion or adhesion on piston-to-cam ring interfaces and valve plate surfaces. Perform a no-load run-in before returning to service.
