Product Overview
The MSE02-2-123-A02-1240-J000 is a large-frame full-displacement radial piston hydraulic motor from Poclain Hydraulics’ MS/MSE02 series, belonging to displacement group 2 of the MSE02 series with a displacement of 398 cc/rev. The MS/MSE02 series is the compact frame offering in Poclain’s multi-purpose motor line, covering displacements from 172 to 398 cc/rev with up to 22 kW (29.5 HP) power, 2,500 N·m (1,843 lb-ft) maximum torque and 400 bar (MSE version) / 450 bar (MS version) maximum pressure, with a multi-speed concept reaching up to 900 rpm.
The MS/MSE02 series employs a modular design concept allowing a single base motor to be configured with different displacement groups, flow-distribution modules, brake modules and output-end modules, serving construction equipment, material handling, agriculture, environment, mining, rail, marine and industry. The series is built on a tried and tested radial piston cam design with a disc flow-distribution module featuring automatic wear-compensation function for high volumetric efficiency in the long term, a function module applying sliding shoes with high load, anti-friction and heat-resistance performance, and an output module applying biconical roller bearings to withstand stronger radial and axial forces.
The model code breaks down as follows: MSE02 identifies the MS/MSE series 02 frame size (E-version, 400 bar maximum working pressure); 2 denotes displacement group 2 (398 cc/rev configuration); 123 is the flow-distribution/function module code; A02 is the shaft and mounting configuration code; 1240 is the mounting flange and output-end code (wheel flange mounting, 5×Ø18 on Ø140); J000 is the standard option combination.
Every unit undergoes 100% simulated operating-condition bench testing prior to shipment, covering pressure cycling, speed stepping and volumetric efficiency verification. Mounting flange, shaft end and port dimensions match the original Poclain MSE02 series exactly, enabling true drop-in interchangeability with zero modification required.
Technical Specifications
MS02/MSE02 Series Frame Size Specifications:
MS02-8: Displacement 172 ml/r (10.5 cu.in/rev), theoretical torque at 10 MPa 273 N·m, rated torque 550 N·m, max pressure 31.5 MPa, max power 18 kW, speed range 0–390 rpm
MS02-0: Displacement 213 ml/r (13.0 cu.in/rev), theoretical torque at 10 MPa 339 N·m, rated torque 700 N·m, max pressure 31.5 MPa, max power 18 kW, speed range 0–310 rpm
MS02-1: Displacement 235 ml/r (14.3 cu.in/rev), theoretical torque at 10 MPa 374 N·m, rated torque 750 N·m, max pressure 31.5 MPa, max power 18 kW, speed range 0–285 rpm
MS02-2: Displacement 255 ml/r (15.6 cu.in/rev), theoretical torque at 10 MPa 405 N·m, rated torque 800 N·m, max pressure 31.5 MPa, max power 18 kW, speed range 0–260 rpm
MSE02-0: Displacement 332 ml/r (20.2 cu.in/rev), theoretical torque at 10 MPa 528 N·m, rated torque 1,100 N·m, max pressure 400 bar (5,802 psi), max power 22 kW (29.5 HP), speed range 0–200 rpm
MSE02-1: Displacement 364 ml/r (22.2 cu.in/rev), theoretical torque at 10 MPa 579 N·m, rated torque 1,150 N·m, max pressure 400 bar, max power 22 kW, speed range 0–182 rpm
MSE02-2 (This Model): Displacement 398 ml/r (24.3 cu.in/rev), theoretical torque at 10 MPa 633 N·m, rated torque 1,300 N·m, max pressure 400 bar (5,802 psi), max torque 2,500 N·m (1,843 lb-ft), max power 22 kW (29.5 HP), max speed 900 rpm, weight ~34 kg (75 lbs)
MS02/MSE02 Series Common Specifications:
Series Max Displacement: 398 cc/rev (24.3 cu.in/rev)
Series Max Torque: 2,500 N·m (1,843 lb-ft)
MS Series Max Working Pressure: 450 bar (6,527 psi)
MSE Series Max Working Pressure: 400 bar (5,802 psi)
Series Max Power: 22 kW (29.5 HP)
Series Max Speed: 900 rpm
Type: Radial piston LSHT hydraulic motor (internal curve cam ring design)
Control: Single or dual displacement (1C/2C)
Brake: Service brake and parking brake options
Motor Type: Wheel motor / shaft motor (modular)
Anti-Skid Option: TwinLock™ integrated anti-skid available
Displacement Range: 172–398 cc/rev
Original Design: Poclain Hydraulics, France
MSE02-2-123-A02-1240-J000 Additional Specifications:
Model Code: MSE02-2-123-A02-1240-J000
Type: Radial piston LSHT hydraulic motor, internal curve cam ring design
Displacement: 398 ml/r (24.3 cu.in/rev)
Theoretical Torque at 10 MPa: 633 N·m (467 lb-ft)
Rated Torque: 1,300 N·m (959 lb-ft)
Max Torque: 2,500 N·m (1,843 lb-ft)
Rated Working Pressure: 25 MPa (250 bar)
Max Working Pressure: 400 bar (MSE version)
Max Power: 22 kW (29.5 HP)
Max Speed: 900 rpm
Valving Type: Displacement group 2 valving module (123 code)
Mounting Flange: Wheel flange mounting, 5×Ø18 on Ø140 (1240 configuration)
Anti-Skid Option: TwinLock™ available
Motor Type: Wheel motor
Operating Temperature Range: -40°C to +115°C
Hydraulic Fluid: Mineral oil (ISO VG46/68), synthetic oil, water glycol
Weight: ~34 kg (75 lbs)
Key Technical Advantages
1. Internal Curve Radial Piston Design for High Startup Torque and Smooth Low-Speed Operation
The MSE02-2-123 employs Poclain’s patented internal curve radial piston design, with multiple pistons arranged radially around a cam ring to deliver high torque at extremely low speeds. With theoretical torque of 633 N·m at 10 MPa and rated torque of 1,300 N·m at full displacement, reaching up to 2,500 N·m maximum torque, the motor operates smoothly across the 0–900 rpm speed range without stick-slip. High startup torque ensures reliable starting under load, making it ideal for wheel-drive and tool drive applications.
2. Modular Architecture with TwinLock™ Anti-Skid System
The MS/MSE02 series employs Poclain’s modular design concept, allowing displacement group, flow-distribution module, brake module and output-end module to be reconfigured, with the modular concept easing use on all demanding applications for construction equipment, material handling, agricultural, environment, mining, on rail, marine and industry. The wheel flange mounting configuration (5×Ø18 on Ø140) supports wheel-drive mounting for skid steer loaders, harvesters, forklifts and more. Optional TwinLock™ integrated anti-skid provides differential locking via hydraulic control for improved traction on challenging terrain.
3. High-Precision Cam Ring and High Radial Load Capacity
The MSE02-2-123 cam ring is manufactured from high-hardness alloy steel with precision grinding to resist high-frequency contact fatigue from piston rollers. A hydrodynamic oil film forms between rollers and cam ring, significantly reducing wear rate and extending overhaul intervals. The output module applies biconical roller bearings to withstand stronger radial and axial forces, enabling direct handling of wheel or tool-end radial loads without additional bearing support mechanisms. The disc flow-distribution module features automatic wear-compensation function, keeping high volumetric efficiency of motors in the long term.
4. Low Noise Design and High Starting Torque
MS series motors are renowned for low noise output, with the coordinated action of multiple pistons and the cam ring effectively reducing operating noise and torque pulsation. The function module applies sliding shoes with high load, anti-friction and heat-resistance performance, optimizing stator curve design to improve running stability and impact resistance. Hydrostatic dynamic braking is an inherent design feature of the motor, providing reliable dynamic braking without additional braking mechanisms.
5. 100% Simulated Load Testing & Drop-In Interchangeability
Each MSE02-2-123-A02-1240-J000 unit is bench-tested under simulated operating conditions prior to dispatch, covering pressure cycling, speed shifting and thermal variation. Mounting flange, shaft end and port dimensions match the original Poclain MSE02 series exactly, enabling direct replacement without pipework or interface modification.
Application Areas
The MS02/MSE02 series is widely deployed in heavy-duty travel and tool drives:
Skid Steer Loaders: Bobcat T190, S185, S205 and similar models
Road Rollers: BOMAG 211 soil compactor, BOMAG 130 AD roller, HAMM 4011 roller
Construction: compact excavator travel drives, Caterpillar 226B, Caterpillar CS-563 compactor
Horizontal Directional Drilling: Vermeer horizontal directional drill drives
Agriculture: combine harvesters, green bean and pea harvesting machines, orchard machinery
Material Handling: forklifts, aerial work platforms, compact cranes
Mining: compact underground equipment drives, scraper conveyor drives
Expert Maintenance Tips
1. Oil Cleanliness and Temperature Control: Maintain system oil cleanliness at ISO 4406 18/16/13 or better. HV46 hydraulic oil is recommended. Operating oil temperature should be kept below 80°C; elevated temperatures accelerate seal degradation. Replace hydraulic oil and filter after the first 500 hours, then follow a 2,000-hour or annual replacement cycle. Case drain temperature is affected by pressure and speed and is always higher than circuit temperature—system temperature must not exceed 115°C at any point.
2. Drain Line Management and Housing Priming: The drain port must return to the reservoir independently—housing back pressure must not exceed 2 bar. The drain line end must remain submerged to prevent air ingestion. Fill the housing with clean hydraulic oil before first startup. After extended shutdown, fill the housing again before restarting.
3. Wheel Flange Mounting Surface Inspection: The MSE02-2-123-A02-1240-J000 features wheel flange mounting (5×Ø18 on Ø140). Periodically inspect the output flange plane and wheel hub mating surface for wear or deformation. Ensure flange mating surface parallelism deviation does not exceed 0.05 mm during installation, and tighten bolts evenly in a diagonal sequence to Poclain technical manual torque values. Mounting surface flatness requirement is 0.2 mm with Ra 12.5 μm surface roughness.
4. Periodic Piston Group and Cam Ring Inspection: As a radial piston motor, the MSE02-2-123’s primary wear points are the piston rollers and cam ring contact surface. Inspect piston roller wear and cam ring working surface every 2,000 hours. Abnormal noise or efficiency loss requires immediate shutdown and service. Use Poclain original specification parts when replacing piston groups to ensure fit accuracy and assembly torque per technical manual requirements.
5. Modular Repair Strategy: The MS/MSE02 series modular design allows replacement of individual worn modules rather than the entire motor. Establish a modular spare parts inventory including flow-distribution module seals, piston groups and cam rings to minimize machine downtime. When replacing modules, follow Poclain official technical manual torque values and assembly sequences.
