MS83-0-111 Poclain Motor | 450 Bar 10019cc Radial Piston

Product Overview

The MS83-0-111-R83-3A50-5DEJM is a large frame radial piston hydraulic motor from Poclain Hydraulics’ MS series of multi-purpose direct drive motors, belonging to the MS83 frame size with displacement group 0 at 8328 cc/rev. The MS series covers displacements from 172 to 15000 cc/rev, with the MS83 series as the large frame offering delivering maximum displacement of 10019 cc/rev, maximum power of 200 kW (268 HP), maximum torque of 71755 N·m (52924 lb-ft) and maximum pressure of 450 bar (6527 psi), with a multi-speed concept reaching up to 200 rpm.

The MS83 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 MS83 and MS125 high-flow motors integrate a new valving design that reduces pressure drop by over 50% and directly increases efficiency during operation, even at low speeds, reducing overall machine energy consumption and delivering significant energy savings at comparable output levels.

The model code breaks down as follows: MS83 identifies the MS series 83 frame size; 0 denotes displacement group 0 (8328 cc/rev); 111 is the flow-distribution/function module code; R83 is the shaft and mounting configuration code; 3A50 is the mounting flange and shaft configuration code; 5DEJM denotes additional options including port orientation, shaft seal type and monitoring interface.

Every unit undergoes 100% simulated operating-condition bench testing prior to shipment. Mounting flange, shaft end and port dimensions match the original Poclain MS83 series exactly, enabling true drop-in interchangeability with zero modification required.

Technical Specifications

MS83 Series Frame Size Specifications:

• MS83-8 (Displacement Group 8): Displacement 6679 ml/r (408 cu.in/rev), theoretical torque at 10 MPa 10620 N·m, max pressure 450 bar (6527 psi)

• MS83-0 (This Model, Displacement Group 0): Displacement 8328 ml/r (508 cu.in/rev), theoretical torque at 10 MPa 13242 N·m, max pressure 450 bar (6527 psi)

• MS83-2 (Displacement Group 2): Displacement 10019 ml/r (611.1 cu.in/rev), theoretical torque at 10 MPa 15930 N·m, max pressure 450 bar (6527 psi)

MS83 Series Common Specifications:

• Series Max Displacement: 10019 cc/rev (611.1 cu.in/rev)

• Series Max Torque: 71755 N·m (52924 lb-ft)

• Series Max Pressure: 450 bar (6527 psi)

• Series Max Power: 200 kW (268 HP)

• Series Max Speed: 200 rpm

• Type: Radial piston LSHT hydraulic motor (internal curve cam ring design)

• Control: Single or dual displacement (multi-speed concept)

• Brake: Parking brake optional

• Motor Type: Wheel motor / shaft motor (modular)

• Anti-Skid Option: TwinLock™ integrated anti-skid available

• Original Design: Poclain Hydraulics, France

MS83-0-111-R83-3A50-5DEJM Additional Specifications:

• Model Code: MS83-0-111-R83-3A50-5DEJM

• Manufacturer Part Number: B00044W

• Type: Radial piston LSHT hydraulic motor, internal curve cam ring design

• Displacement: 8328 cc/rev (508 cu.in/rev)

• Theoretical Torque at 10 MPa: 13242 N·m

• Max Torque: 71755 N·m (series maximum)

• Max Pressure: 450 bar (6527 psi)

• Input Speed: 52 rpm (typical for displacement group 0)

• Valving Type: No. 1 valving module (111 code)

• Mounting Flange: R83 mounting configuration

• Shaft Configuration: 3A50 configuration (with brake interface)

• Brake: 5DEJM option configuration

• Motor Type: Wheel motor / shaft motor

• Operating Temperature Range: -40°C to +115°C

• Hydraulic Fluid: Mineral oil (ISO VG46/68), synthetic oil, water glycol

• Original Design: Poclain Hydraulics, France

Key Technical Advantages

1. Internal Curve Radial Piston Design for High Startup Torque and Smooth Low-Speed Operation

The MS83-0 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. At 8328 cc/rev, theoretical torque at 10 MPa reaches 13242 N·m, with series maximum torque up to 71755 N·m, enabling smooth operation across the 0–200 rpm speed range without stick-slip. High startup torque ensures reliable starting under load, making it ideal for heavy-duty wheel-drive and mining equipment drive applications.

2. Innovative Valving Design Reducing Pressure Drop by Over 50%

The MS83 series integrates a new valving design that reduces pressure drop by over 50%, directly increasing efficiency even at low speeds. At comparable output levels, overall machine energy consumption is significantly reduced, delivering substantial energy savings. This makes the MS83-0 particularly advantageous in heavy equipment requiring extended continuous operation.

3. Modular Architecture for Maximum Adaptability

The MS series employs Poclain’s modular design concept, allowing displacement group, flow-distribution module, brake module and output-end module to be reconfigured. The R83 mounting configuration supports both wheel-drive and shaft-output mounting for wheel loaders, road rollers, skid steer loaders, mining equipment and ship deck machinery. Optional TwinLock™ integrated anti-skid provides differential locking via hydraulic control for improved traction. Brake options include parking brake modules.

4. High Power Density and Compact Design

The MS83-0 delivers up to 200 kW of power in a compact package, with class-leading power density among comparable low-speed high-torque motors. Large diameter bearing support directly handles wheel or tool-end radial loads without additional bearing support mechanisms, simplifying drivetrain design. The modular design allows replacement of individual worn modules rather than the entire motor, substantially reducing total cost of ownership.

5. 100% Simulated Load Testing & Drop-In Interchangeability

Each MS83-0-111-R83-3A50-5DEJM unit is bench-tested under simulated operating conditions prior to dispatch, covering pressure cycling, speed stepping and thermal variation. Mounting flange, shaft end and port dimensions match the original Poclain MS83 series exactly, enabling direct replacement without pipework or interface modification. Motor performance is very close to original Poclain motors, sometimes even superior, with both complete motors and spare parts 100% interchangeable.

Application Areas

The MS83 series is widely deployed in heavy-duty travel and tool drives:

• Mining: large mining truck wheel drives, subsurface loaders, coal mining machinery travel drives

• Construction: large wheel loader drives, road rollers, rotary drill head drives

• Marine & Offshore: deck machinery, winch drives, thruster drives

• Metallurgical: rolling mill auxiliary drives, continuous casting machine drives, steel mill equipment

• Industrial: large shredders, industrial conveyors, mill drives

• Rail: track maintenance vehicle drives

• Oil & Gas: oil well drilling equipment drives, coil tubing units

Expert Maintenance Tips

1. Valving Module and Pressure Drop Monitoring: The MS83-0 integrates an innovative valving design reducing pressure drop by over 50%. Periodically monitoring system pressure drop changes is an effective means of assessing valving module condition. If pressure drop increases by more than 10% from the initial value, inspect the valve plate sealing surface for wear or contaminant accumulation. Inspect the valving module every 2,000 hours, cleaning or replacing the valve plate as necessary.

2. Wheel Flange Mounting Surface Inspection: The MS83-0-111-R83 features R83 wheel flange mounting. 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.

3. 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.

4. 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.

5. Periodic Piston Group and Cam Ring Inspection: As a radial piston motor, the MS83-0’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.

6. Brake Maintenance (If Equipped): The 5DEJM option may include brake configuration. Multi-disc wet brakes require periodic inspection of friction plate thickness and spring preload. Abnormally high brake release pressure typically indicates friction plate wear or piston seal failure—replace friction plates and seals promptly. During reassembly, coat the piston seal contact surface with anti-oxidizing grease.