Product Overview
The MSE 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 MSE series 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 MSE series mounting and interface standards, these motors offer 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 MS/MSE series covers an ultra-wide displacement range from 172 cc/rev to 15,000 cc/rev, including MS02/MSE02, MS05/MSE05, MS08/MSE08, MS11/MSE11, and MS18/MSE18. The MSE08 delivers up to 1,248 cc/rev maximum displacement and 41 kW maximum power; the MSE11 delivers up to 1,687 cc/rev and 50 kW. Featuring a modular design with single and dual displacement (multispeed) configurations, as well as optional service brakes, parking brakes, and Twin-Lock™ anti-skid systems. 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-A-JE5-F08-1120-8EJ0 (Part No.: 001843858T)
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
A – Cam ring type (Type A cam)
JE5 – Mounting flange and interface type
F08 – Shaft and bearing configuration
1120 – Displacement code (dual displacement: first displacement approx. 1,048 cc/rev, second approx. 524 cc/rev)
8EJ0 – Brake and special options configuration code (with static brake)
MSE11-0-DQ4-R11-1130-8DEJ (Part No.: A288820B)
MSE – Series code: Radial piston hydraulic motor (HighFlow™ version, 400 bar working pressure)
11 – Size code: 11 platform, max power 50 kW, max displacement 1,687 cc/rev
0 – Displacement group code (first displacement approx. 1,048 cc/rev, second approx. 524 cc/rev)
DQ4 – Mounting flange and interface type
R11 – Shaft and bearing configuration
1130 – Displacement code (dual displacement configuration)
8DEJ – Brake and special options configuration code
A288820B – Part number
Technical Specifications
MSE08-A-JE5-F08-1120-8EJ0
Model: MSE08-A-JE5-F08-1120-8EJ0
Part Number: 001843858T
Type: Radial piston hydraulic motor (LSHT, HighFlow™)
Series Maximum Displacement: 1,248 cc/rev (76.1 cu.in/rev)
Displacement Code 1120: Approx. 1,048 / 524 cc/rev (dual displacement configuration)
Maximum Working Pressure (MSE series): 400 bar (5,802 PSI)
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
Displacement Type: Dual displacement (2-speed)
Brake Configuration: Static brake
Anti-skid Option: Twin-Lock™ available
Medium: Mineral oil, synthetic hydraulic oil
Operating Temperature Range: -40°C to +80°C (standard seals)
MSE11-0-DQ4-R11-1130-8DEJ
Model: MSE11-0-DQ4-R11-1130-8DEJ
Part Number: A288820B
Type: Radial piston hydraulic motor (LSHT, HighFlow™)
Series Maximum Displacement: 1,687 cc/rev (102.9 cu.in/rev)
Displacement Code 0: Approx. 1,048 / 524 cc/rev (dual displacement configuration)
Maximum Working Pressure (MSE series): 400 bar (5,802 PSI)
Maximum Torque: 10,700 N·m (7,892 lb-ft)
Maximum Power: 50 kW (67 HP)
Displacement Type: Dual displacement (2-speed)
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)
MS/MSE Series Maximum Specifications by Size :
MS02/MSE02: Max displacement 398 cc/rev, max power 22 kW, max torque 2,500 N·m
MS05/MSE05: Max displacement 750 cc/rev, max power 50 kW, max torque 4,770 N·m
MS08/MSE08: Max displacement 1,248 cc/rev, max power 41 kW, max torque 7,945 N·m
MS11/MSE11: Max displacement 1,687 cc/rev, max power 50 kW, max torque 10,700 N·m
MS18/MSE18: Max displacement 2,812 cc/rev, max power 70 kW, max torque 17,900 N·m
Key Technical Advantages
1. 100% Direct Interchangeability – Zero Modification Required
The MSE 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 starting torque. The pistons move within the cam ring, generating high torque even at extremely low speeds. This design makes the MSE series ideal for wheel drive and low-speed heavy-load applications.
3. HighFlow™ Optimized Design – Higher Power Density
The MSE series 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. MSE08 achieves maximum speeds of 450 RPM, while MSE11 delivers up to 50 kW.
4. Modular Design with Flexible Multi-Function Configuration
The MSE series features a modular design with single and dual displacement (multispeed) options. Optional service brakes, parking brakes, and Twin-Lock™ anti-skid systems are available. The modular architecture enables rapid adaptation to different applications from a single platform, significantly reducing inventory complexity and maintenance costs.
5. High-Pressure Capability with Long-Life Bearing System
MSE series operates at 400 bar working pressure—industry-leading pressure ratings in the radial piston motor class. The high-durability bearing design accommodates substantial external axial and radial loads. Reliable high-temperature shaft seals ensure long-term sealing performance under demanding operating conditions.
6. 100% Factory Testing Under Simulated Working Conditions
Every MSE 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 MSE 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, asphalt pavers
Material Handling: Forklifts, port cranes, handling equipment
Agricultural Machinery: Combine harvester travel drives, large tractors, self-propelled sprayers
Mining Equipment: Mining machinery
Railway Equipment: Railway engineering machinery
Marine & Shipbuilding: Marine winches, deck machinery
Industrial Equipment: Industrial tool drives, conveyors
Specific equipment applications include:
Caterpillar 906/908 wheel loaders
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
Expert Maintenance Tips
1. Hydraulic Fluid Cleanliness Management
The MSE 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. 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 series 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 service brakes and parking brakes. 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. The use of flexible couplings is recommended to compensate for minor installation deviations.
8. Periodic Inspection and Maintenance
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.
