MSE08-2-D25-R08-1720-5DEJM Poclain Radial Piston Motor

Product Overview

The MSE08 series low-speed high-torque (LSHT) radial piston hydraulic motors are a core product line within the Poclain Hydraulics MS/MSE multipurpose motor platform. Featuring an advanced radial piston cam ring design combined with disc valve distribution and hydrostatic balance technology, these motors deliver exceptional starting torque and smooth low-speed operation. The MSE08 represents the “HighFlow™” upgrade of the MS Classic range, featuring optimized channel geometry and a new valving system that delivers higher speed and power output at the same displacement.

Designed to fully comply with Poclain MSE08 series mounting and interface standards, this motor offers 100% direct interchangeability with original Poclain units—enabling plug-and-play replacement without any管路 modifications or adapter plates, significantly minimizing downtime and retrofit costs.

The MSE08 series delivers up to 1,248 cc/rev maximum displacement and 41 kW maximum power, making it ideal for wheel motor and tool drive applications. This model MSE08-2-D25-R08-1720-5DEJM features a dual displacement (2-speed) configuration, enabling displacement switching via control ports to achieve high/low-speed mode transitions for varying operating conditions. Every unit undergoes 100% factory testing under simulated real-world working conditions, validating pressure, flow, torque output, and performance characteristics before shipment—ensuring reliable operation from the very first start.

Model Code Interpretation:

MSE08-2-D25-R08-1720-5DEJM

• MSE – Series code: Radial piston hydraulic motor (HighFlow™ version, 400 bar working pressure)

• 08 – Size code: 08 platform, max power 41 kW, max displacement 1,248 cc/rev

• 2 – Displacement type: Dual displacement (2-speed) configuration

• D25 – Displacement group code (D series, group 25)

• R08 – Mounting flange and shaft configuration

• 1720 – Specific displacement code (dual displacement configuration)

• 5DEJM – Brake and special options configuration code

Technical Specifications 

MSE08-2-D25-R08-1720-5DEJM

• Model: MSE08-2-D25-R08-1720-5DEJM

• Type: Radial piston hydraulic motor (LSHT, HighFlow™)

• Series Maximum Displacement: 1,248 cc/rev (76.1 cu.in/rev)

• Displacement Range: 467 – 1,248 cc/rev (multiple displacement groups available)

• Displacement Type: Dual displacement (2-speed)

• Maximum Working Pressure (MSE series): 400 bar (5,802 PSI)

• Maximum Continuous Pressure (MSE series): 300 bar

• Maximum Torque: 7,945 N·m (5,859 lb-ft)

• Torque (@100 bar): 1,984 N·m

• Maximum Power: 41 kW (55 HP)

• Maximum Speed: 450 RPM (dual displacement, full displacement)

• Brake Configuration: Multi-disc brake (optional)

• Anti-skid Option: Twin-Lock™ available

• Medium: Mineral oil, synthetic hydraulic oil

• Operating Temperature Range: -40°C to +80°C (standard seals)

• Weight: Approx. 60–70 kg

MSE08 Series Displacement Group Reference :

• Displacement Group “8”: 467 / 234 cc/rev

• Displacement Group “0”: 780 / 390 cc/rev

• Displacement Group “1”: 857 / 429 cc/rev

• Displacement Group “2”: 934 / 467 cc/rev

Key Technical Advantages

1. 100% Direct Interchangeability – Zero Modification Required

The MSE08 series is engineered to exact Poclain mounting and interface specifications, with identical dimensions, port locations, and shaft end configurations. End users can replace original units directly without any管路 modifications or adapter plates—transforming unplanned downtime into scheduled, rapid maintenance while significantly reducing spare parts procurement costs and equipment downtime losses.

2. Radial Piston Cam Ring Design – Superior Starting Torque and Low-Speed Performance

The advanced radial piston cam ring design, combined with disc valve distribution and hydrostatic balance technology, delivers exceptional performance. The radial piston configuration enables the motor to generate enormous traction force directly on the output shaft, even at extremely low speeds (as low as 0.5 RPM) . This design makes the MSE08 series ideal for wheel drive and low-speed heavy-load applications.

3. Dual Displacement (2-Speed) Configuration – Flexible Adaptation to Operating Conditions

This model features a dual displacement (2-speed) configuration with displacement switching via control ports. The displacement ratio reaches 2:1, enabling high/low-speed mode transitions—adapting to the speed and torque requirements of mobile machinery under varying operating conditions. This eliminates the need for additional gear-shifting mechanisms, simplifying system architecture.

4. HighFlow™ Optimized Design – Higher Power Density

The MSE08 represents the “HighFlow™” upgrade of the MS Classic range, featuring an integrated exchange valve, optimized port geometry, and a new valving system that delivers higher speed and power output at the same displacement. Maximum power reaches 41 kW with maximum speed 450 RPM.

5. Modular Design with Flexible Multi-Function Configuration

The MSE08 series features a modular design with selectable output modules, function modules, distribution modules, and brake modules based on actual requirements. Optional service brakes, parking brakes, and Twin-Lock™ anti-skid systems are available. The disc distribution module features automatic wear compensation, maintaining high volumetric efficiency over the long term.

6. 100% Factory Testing Under Simulated Working Conditions

Every MSE08 series unit undergoes rigorous factory testing under simulated real-world conditions, validating pressure, flow, torque output, volumetric efficiency, and thermal characteristics across the full operating range. Test media match actual operating conditions, ensuring each unit is ready for immediate installation and reliable operation upon delivery—eliminating the risk of “dead on arrival” components.

Application Areas

The MSE08 series motors are widely deployed across the following industries and equipment types:

• Construction Equipment: Excavator travel drives, skid steer loader wheel drives

• Road Construction: Roller travel drives, road maintenance equipment

• Material Handling: Forklifts, port cranes, handling equipment

• Agricultural Machinery: Combine harvester travel drives, self-propelled sprayers

• Mining Equipment: Mining machinery

• Railway Equipment: Railway engineering machinery

• Marine & Shipbuilding: Marine winches, deck machinery

• Industrial Equipment: Industrial tool drives, conveyors

Equipment Applications:

• Caterpillar 906/908 wheel loaders, 299D compact track loader

• Bobcat S850 skid steer loader, T870 compact track loader

• John Deere 4630/4730 self-propelled sprayers

• Case IH Patriot 3230/3340 self-propelled sprayers

• Claas Lexion series harvesters

• New Holland W80/W110 wheel loaders, Guardian SP310F self-propelled sprayer

Expert Maintenance Tips

1. Hydraulic Fluid Cleanliness Management

The MSE08 series utilizes radial piston designs with minimal clearances between pistons and cylinder bores, making them highly sensitive to fluid contamination. It is recommended to install filters with ≤10μm filtration rating, maintaining fluid cleanliness to ISO 4406 19/17/14 or better. Never use degraded or substandard hydraulic fluids.

2. Air Bleeding Before Start-up

Always bleed air from the motor housing via the highest bleed screw before initial start-up or after extended shutdown periods to prevent cavitation damage. Use a waste oil collector to recover hydraulic fluid escaping during the filling process.

3. Case Drain and Backpressure Control

Ensure the case drain line is unrestricted with no flow restrictions. Shaft seal withstands 5 bar pressure. Excessive case backpressure will cause shaft seal damage and premature bearing failure. The drain line should return directly to the reservoir, not in parallel with the return line.

4. Rotation Direction Confirmation

Reversing the fluid flow direction will reverse the motor‘s direction of rotation. Verify that the system circuit direction matches the required rotation direction before installation.

5. Dual Displacement Configuration Tuning

This model features dual displacement (2-speed) configuration with displacement switching via control ports. During commissioning, verify that the switching control pressure is stable and response is rapid. Avoid frequent switching under load to prevent shock loads.

6. Brake System Inspection

This series offers optional multi-disc service brakes with braking pressure up to 120 bar (1,740 PSI) . Before first use, verify that brake pressure settings are correct and the brake releases fully to avoid abnormal wear from starting with the brake engaged.

7. Coupling Alignment Requirements

Maintain shaft alignment within 0.05 mm concentricity and 0.5° angular deviation between the drive shaft and the load shaft. Excessive misalignment will lead to premature bearing wear and shaft seal leakage.

8. Periodic Inspection and Maintenance

Bearing service life is influenced by pressure. Inspect shaft seals for leakage and listen for abnormal operating noise every 1,000 operating hours or every 6 months (whichever comes first). If reduced torque output or abnormal operating noise is observed, timely overhaul of the piston assembly and valve plate is recommended.