MS05-0-113-F04-2A50-0000 Poclain Hydraulic Motor 468cc

Product Overview

The MS05-0-113-F04-2A50-0000 is a low-speed high-torque radial piston hydraulic motor built on the Poclain MS/MSE05 modular platform, in the MS05 series displacement group 0 with dual-displacement configuration. The motor features a radial piston cam ring design, specifically engineered for wheel motor or tool drive applications. The MS/MSE05 series direct-drive motor delivers up to 50 kW (MSE version up to 29 kW), with a displacement range of 260 to 750 cc/rev, maximum pressure of 450 bar, maximum torque of 4,770 N·m, and a multi-speed design reaching speeds up to 700 rpm.

The model code MS05-0-113-F04-2A50-0000 decodes as follows: MS05 designates the series (MS multipurpose motor series), 0 is the displacement group code (full/half displacement = 468/234 cc/rev), 113 is the distribution shaft module code, F04 is the brake module code, 2A50 is the output shaft configuration code (Classic 2A50 shaft motor configuration), and 0000 is the standard tail configuration code. The motor features a dual-displacement configuration, enabling switching between full and half displacement through an integrated valve assembly for multi-speed drive requirements.

The MS05 series employs a multi-piston radial layout with roller-type force transmission between pistons and the cam ring, combined with a precision-machined distribution shaft module, ensuring stable torque delivery and excellent volumetric efficiency under low-speed heavy-load conditions. The MS05-0 displacement group offers a full displacement of 468 cc/rev and a half displacement of 234 cc/rev, with a rated pressure of 25 MPa, maximum pressure of 35–40 MPa, rated torque of 1,749 N·m, rated speed of 85 rpm, and speed range of 0–190 rpm. Maximum speed reaches 370 rpm. The motor weighs approximately 64 kg.

Engineered as a form-fit-function replacement for original Poclain MS05-0 series motors, this model maintains identical mounting flange dimensions, shaft specifications (2A50 standard output shaft), and port locations, enabling drop-in interchangeability without modification to the host machine’s mounting interface or hydraulic circuit. Core components are manufactured from imported materials and completed through precision machining centers. Every unit undergoes 100% simulated load testing prior to shipment, validating output torque and volumetric efficiency against original specifications.

Technical Specifications (Bulleted List)

• Model: MS05-0-113-F04-2A50-0000

• Series: Poclain MS/MSE05 modular hydraulic motor

• Motor Type: Low-speed high-torque radial piston motor (LSHT)

• Design Feature: Radial piston cam ring, dual-displacement switching, modular design

• Full Displacement: 468 cc/rev (28.5 cu.in/rev)

• Half Displacement: 234 cc/rev (14.3 cu.in/rev)

• Displacement Ratio: 2:1 (dual-displacement switching)

• Rated Pressure: 25 MPa (250 bar / 3,625 PSI)

• Maximum Pressure: 450 bar (6,527 PSI)

• Peak Pressure: 400–450 bar

• Rated Torque: 1,749 N·m

• Theoretical Torque (Δp=10 MPa): 699 N·m (full displacement) / 343 N·m (half displacement)

• Rated Speed: 85 rpm

• Speed Range: 0–190 rpm

• Maximum Speed: 370 rpm

• Maximum Power: 25 kW (33 HP, full displacement) / 17 kW (23 HP, half displacement)

• Rotation: Bi-directional

• Mounting: Shaft motor (Classic 2A50 configuration)

• Output Shaft Configuration: 2A50 standard output shaft

• Brake Option: F04 brake module

• Port Connections: ISO 1179-1 G3/4

• Optional Features: Speed sensor, parking brake, flushing valve, Twin-Lock™ anti-skid system

• Circuit: Open circuit / Closed circuit

Key Technical Advantages

1. Radial Piston Cam Ring Design with High Starting Torque

The MS05-0-113 employs Poclain’s classic radial piston cam ring design, with multiple pistons radially arranged inside the cam ring, converting radial piston motion into rotational output through roller-type force transmission. This design enables the motor to deliver maximum torque at startup, with no difference between starting torque and running torque, operating smoothly at speeds as low as 1 rpm without stick-slip or speed fluctuation. MS series motors have established themselves as a benchmark in the hydraulic motor market through their high efficiency and ability to run smoothly at very low speeds.

2. Dual-Displacement Switching with Multi-Speed Drive Capability

An integrated dual-displacement control valve enables switching between 468 cc/rev full displacement and 234 cc/rev half displacement via an external pilot pressure signal. Full-displacement mode delivers maximum torque for heavy-load starting and climbing conditions; switching to half displacement doubles the output speed for no-load fast travel or light-load high-speed operation. The multispeed conception enables a maximum speed of 370 rpm. The mechanism allows displacement changes without motor disassembly, enhancing overall machine adaptability.

3. Modular Design with Flexible Configuration

The MS05 series employs Poclain’s signature modular architecture, comprising torque module, distribution shaft module, mounting flange module, and brake module, with standardized interfaces between modules. The MS05 series shares mounting interfaces and control modules with other MS series products including MS02, MS08, MS11, and MS18, enabling machine manufacturers to flexibly switch between different displacement requirements. In the model code, “113” designates the distribution shaft module, “F04” designates the brake module, and “2A50” designates the standard output shaft configuration. Optional modules include parking brakes, speed sensors, and flushing valves, with individual component replacement possible during maintenance or upgrade.

4. Compact Structure with Heavy-Load Bearing Capacity

The MS05-0-113 achieves a maximum power output of 25 kW and a rated torque of 1,749 N·m at 468 cc/rev displacement, offering a high power-to-weight ratio. The bearing support module accommodates combined radial and axial loads, suitable for direct-load wheel drive applications. The motor housing is constructed from high-strength cast iron, with critical moving interfaces surface-hardened for long-term reliability in demanding mining, construction, and agricultural environments. An optional Twin-Lock™ anti-skid system provides additional traction control for wheel drive applications.

Application Areas

• Construction Machinery: Skid steer loader wheel drives, mini excavator travel drives, cold planers

• Agricultural Machinery: Self-propelled sprayers (John Deere 4630/4730, etc.) travel and drum drives

• Mining Equipment: Coal mine drills, heavy-duty handling vehicles, scraper conveyors

• Material Handling: Forklift drives, aerial work platforms, beam carriers

• Rail & Marine: Railway maintenance equipment, deck machinery

• Municipal & Environmental Equipment: Road sweepers, refuse compactors

• Specialty Vehicles: Fire engines, special-purpose vehicles

MS05 series motors are widely used across construction equipment, material handling, agricultural, environmental, mining, rail, marine, and industrial markets.

Expert Maintenance Tips

1. Shaft Alignment Requirements: The 2A50 standard output shaft configuration features flange mounting. During installation, ensure the coaxiality deviation between the motor shaft and drive-end coupling does not exceed 0.05 mm. When installing a splined shaft, ensure the spline mating surfaces are free of burrs and damage, coated with appropriate grease to prevent corrosion.

2. Initial Startup Preparation: Fill the motor housing with clean hydraulic fluid during initial installation to prevent dry friction on piston pairs and cam ring during startup. The drain port (L port) must be connected separately to the reservoir with back pressure not exceeding 0.5 MPa; higher back pressure will damage the shaft seal and deform the housing.

3. Dual-Displacement Switching Mechanism Maintenance: Periodically verify the dual-displacement switching valve response pressure. Conduct switching tests every 500 operating hours using 3–5 MPa pilot pressure to ensure crisp, non-sticking actuation. If switching is sluggish, check pilot circuit pressure and valve spool wear.

4. Hydraulic Fluid Cleanliness and Change Intervals: Maintain hydraulic fluid cleanliness at ISO 18/15 or NAS Level 9 or better. Replace hydraulic fluid and filter elements every 1,000 operating hours or annually, with filter element filtration accuracy no less than 10 μm.

5. Restart After Extended Storage: For motors stored over 6 months, manually rotate the shaft 2–3 revolutions to confirm free rotation, then run at low pressure (5 MPa) under no load for 10 minutes, confirming normal case temperature and leakage before gradually applying load.

6. Case Drain Leakage Monitoring: Inspect case drain leakage every 500 operating hours; normal leakage should remain below 2 L/min. A sudden increase indicates potential wear on piston pairs or the distribution plate.

Related models：