Poclain MS02 MSE02 MSE05 MSE08 Hydraulic Motor | HMS02-2-123-F03 | MS Series

The Poclain MS and MSE Series from LIC Hydraulic represents the global benchmark for Radial Piston LSHT (Low-Speed High-Torque) Motors. These modular units, including the MSE02, MSE05, and MSE08 series, utilize the proven multi-cam technology to deliver massive torque directly to the wheels or tracks without the need for reduction gearboxes. Model HMS02-2-123-F03-1120-YJG0 is engineered specifically for grueling mobile drive applications. We guarantee 100% mechanical interchangeability and conduct 100% simulated heavy-load testing to ensure zero-ripple speed control and rugged durability.

Technical Specifications 

• Series: Poclain MS / MSE Series (Frame size 02)

• Model Code: HMS02-2-123-F03-1120-YJG0

• Displacement: $172\text{ to }255\text{ cm}^3\text{/rev}$ (standard for MSE02 size)

• Nominal Pressure: $400\text{ bar}$ ($5800\text{ psi}$)

• Peak Pressure: $450\text{ bar}$ ($6525\text{ psi}$)

• Max Speed: $250\text{ to }400\text{ rpm}$

• Braking: Integrated F03 Multi-disc parking brake

• Options: 1-Speed or 2-Speed (Twin-displacement) configurations

Key Technical Advantages

• Multi-Cam Radial Piston Design: The rollers act on a cam ring with multiple lobes, providing high mechanical efficiency and perfectly smooth rotation even at speeds as low as $1\text{ RPM}$. This eliminates the “jerking” common in orbital motors.

• Ultra-Compact Footprint: The MSE series features a shortened design, allowing it to be fully integrated within wheel rims or compact track drives, significantly reducing the machine’s overall width and center of gravity.

• Superior Load Capacity: Heavy-duty tapered roller bearings allow the motor to support the full weight of the vehicle and withstand high radial and axial shock loads without additional structural components.

• Integrated Safety Systems: The modular design allows for the seamless integration of parking brakes and speed sensors, ensuring the highest safety standards for off-road and industrial machinery.

Application Areas

• Construction Machinery: Primary drives for mini-excavators, skid steer loaders, and asphalt compactors.

• Agricultural Equipment: Self-propelled sprayers, harvester wheel drives, and orchard tractors.

• Industrial & Marine: High-torque winch drives, heavy-duty conveyors, and material handling systems.

Expert Maintenance Tips

• Mandatory Priming: The motor housing must be filled with clean, filtered hydraulic oil through the highest drain port before startup. Trapped air can cause cavitation during the first rotation, leading to catastrophic failure of the piston rollers.

• Case Drain Management: Ensure the case drain line is plumbed directly to the tank with zero restriction. Backpressure in the case must not exceed $2\text{ bar}$ ($29\text{ psi}$) to protect the high-pressure shaft seal and maintain piston retraction force.

• Thermal Protection: Since LSHT motors dissipate internal friction heat primarily through the case drain, monitor the drain oil temperature. Excessive heat indicates internal wear and will rapidly degrade the motor’s seals and internal cam timing.