MS11-1-121-F12-1130-257DEJ Poclain Hydraulic Motor 1147cc 450bar

Product Overview

The MS11 series is a core member of the Poclain Hydraulics MS multipurpose radial piston hydraulic motor family. The MS series is Poclain Hydraulics’ globally renowned direct-drive hydraulic motor range, featuring a proven radial piston cam-ring design that has established itself as an unrivaled benchmark in the LSHT (Low-Speed High-Torque) hydraulic motor market worldwide.

The MS11 series delivers maximum displacement of 1,687 cc/rev, maximum power of 50 kW, and maximum pressure up to 450 bar (maximum torque 10,700 N.m), with high speed reaching 200 rpm through multispeed design. The modular design enables easy application across demanding markets including construction equipment, material handling, agriculture, environment, mining, rail, marine, and industry.

Our product provides a fully interchangeable direct replacement for the original Poclain Hydraulics MS11 series motor, with identical mounting dimensions, port specifications, and shaft configurations. Every unit undergoes 100% simulated duty-cycle testing—performance-validated under rated pressure, peak pressure, and full speed range to ensure volumetric efficiency, mechanical efficiency, torque output, noise levels, and thermal characteristics meet or exceed original OEM specifications.

Model 1: MS11-1-121-F12-1130-257DEJ

Technical Specifications 

• Full Model: MS11-1-121-F12-1130-257DEJ

• Brand: Poclain Hydraulics

• Series: MS11 (MS Multipurpose Series)

• Type: LSHT Radial Piston Hydraulic Motor

• Displacement Stages: 1C (Single Displacement / Single Speed)

• Displacement Code: 1 → 1,147 cm³/rev

• Max. Displacement: 1,147 cm³/rev (70.0 in³/rev)

• Theoretical Torque @ 100 bar: 1,824 Nm

• Theoretical Torque @ 1,000 PSI: 927 lb·ft

• Max. Pressure: 450 bar (6,527 PSI)

• Max. Power: 50 kW (67 HP)

• Max. Speed: 180 rpm

• Mounting: 1130 Standard Mounting Dimensions

• Shaft Configuration: F12

• Brake Options: 257DEJ Brake and Seal Configuration

• Anti-Skid: Twin-Lock™ Integrated Anti-Skid Function (Optional)

• Brake Types: Service Brake / Parking Brake (Optional)

• Motor Inertia: 0.05 kg·m²

• Housing Material: High-Strength Cast Iron

• Weight: Approx. 70–90 kg (depending on configuration)

Key Technical Advantages

1. Radial Piston Cam-Ring Design — Industry Benchmark
The MS series features the proven and continuously improved radial piston cam-ring technology. Working cylinders are radially arranged around a crankshaft, with pistons actuated by the cam ring. This design delivers exceptional efficiency at any speed or operating pressure, combined with outstanding impact resistance and heavy-load capacity.

2. Ultra-High Starting Torque & Superior Low-Speed Stability
The radial piston cam-ring design endows the MS series with exceptionally high starting torque — approaching 90% of theoretical torque. The motor operates smoothly at extremely low speeds, enabling direct load drive without additional speed reducers.

3. Compact Design & High Power Density
Delivers 50 kW output power and 1,824 Nm/100 bar torque in a compact package. Direct-drive design eliminates intermediate transmission components, simplifying system architecture and improving overall efficiency.

4. Modular Design & Versatile Configurations
The MS series features a modular design philosophy, offering both wheel motor and shaft output configurations. Optional service brake, parking brake, and Twin-Lock™ integrated anti-skid functionality are available. The MS11 series offers ten displacement code options from 730 cc to 1,687 cc.

5. High Pressure Capability & Reliability
Maximum working pressure of 450 bar—among the highest in its class. Modular design enables easy deployment across demanding applications including construction equipment, material handling, agriculture, and mining.

Application Areas

The MS11-1-121-F12-1130-257DEJ radial piston motor is widely used in travel drives and working function drives across construction and industrial equipment:

• Construction Equipment: Skid-steer loader and mini-excavator travel drives

• Road Construction Equipment: Roller vibratory drum drives

• Agricultural Machinery: Large sprayer travel drives, combine harvester header drives

• Mining Equipment: Underground mining vehicle travel drives

• Material Handling: Telescopic handler travel drives

• Railway Maintenance: Track maintenance equipment travel drives

• Marine Machinery: Marine deck cranes

• Industrial Drives: Winch drives and heavy material handling equipment

Expert Maintenance Tips

1. Shaft seals and all O-rings must be replaced after every disassembly.

2. Pre-lubricate all moving parts with clean hydraulic fluid before assembly.

3. Purge all air from the motor housing before initial start-up, and run at moderate load and speed for 10–15 minutes for break-in.

4. Recommended maximum system operating temperature should not exceed 82°C to ensure seal and fluid service life.

5. Monitor case drain flow regularly — an abnormal increase indicates potential piston or cylinder wear.

6. Weight is approximately 70–90 kg — use proper lifting equipment during installation and removal to prevent personal injury or component damage.

7. Ensure hydraulic system filtration meets β₁₀ ≥ 75 (ISO 4406 cleanliness code不低于 18/16/13) to maximize motor service life.

8. For wheel mount applications, strictly follow specified bolt torque and use thread-locking compound to prevent loosening.

Model 2: MS11-8-121-R11-1110-5EJ0

Product Overview

The MS11-8-121-R11-1110-5EJ0 is a medium-displacement model in the Poclain Hydraulics MS11 series radial piston hydraulic motor family, with 837 cm³/rev displacement. This model features a single displacement (single speed) configuration within the MS11 series, offering a compact design with efficient power output for a wide range of medium-to-heavy mobile machinery and industrial drive applications.

Our product provides a fully interchangeable direct replacement for the original Poclain Hydraulics MS11 series motor, with identical mounting dimensions, port specifications, and shaft configurations. Each unit undergoes 100% simulated duty-cycle testing—performance-verified at rated pressure, peak pressure, and full speed range to ensure all performance indicators meet or exceed OEM specifications.

Technical Specifications 

• Full Model: MS11-8-121-R11-1110-5EJ0

• Brand: Poclain Hydraulics

• Series: MS11 (MS Multipurpose Series)

• Type: LSHT Radial Piston Hydraulic Motor

• Displacement Stages: 1C (Single Displacement / Single Speed)

• Displacement Code: 8 → 837 cm³/rev

• Max. Displacement: 837 cm³/rev (51.0 in³/rev)

• Theoretical Torque @ 100 bar: 1,331 Nm

• Theoretical Torque @ 1,000 PSI: 677 lb·ft

• Max. Pressure: 450 bar (6,527 PSI)

• Max. Power: 44 kW (59 HP)

• Max. Speed: 195 rpm

• Speed Range: 0–160 rpm

• Mounting: 1110 Standard Classic Mounting Dimensions

• Shaft Configuration: R11

• Mounting Flange: 1110 (Standard Classic Wheel Mount)

• Brake Options: 5EJ0 Brake and Seal Configuration

• Anti-Skid: Twin-Lock™ Integrated Anti-Skid Function (Optional)

• Brake Types: Service Brake / Parking Brake (Optional)

• Motor Inertia: 0.05 kg·m²

• Housing Material: High-Strength Cast Iron

• Weight: Approx. 60–75 kg (depending on configuration)

Key Technical Advantages

1. Optimized Displacement-Power Balance
With 837 cm³ displacement, the MS11-8 strikes an ideal balance between high-speed capability (195 rpm) and ample torque output (1,331 Nm/100 bar)—one of the most versatile models in the MS11 series.

2. Radial Piston Cam-Ring Design — Ultra-High Starting Torque
The proven radial piston cam-ring technology endows the MS series with exceptionally high starting torque — approaching 90% of theoretical torque. The motor operates smoothly at extremely low speeds.

3. Compact Design & High Power Density
Delivers 44 kW output power and 1,331 Nm/100 bar torque in a compact package. Direct-drive design eliminates intermediate transmission components.

4. Modular Design & Versatile Configurations
The MS series features a modular design philosophy, offering both wheel motor and shaft output configurations. Optional service brake, parking brake, and Twin-Lock™ integrated anti-skid functionality are available.

5. High Pressure Capability & Reliability
Maximum working pressure of 450 bar—among the highest in its class.

Application Areas

The MS11-8-121-R11-1110-5EJ0 radial piston motor is widely used in travel drives and working function drives across construction and industrial equipment:

• Construction Equipment: Skid-steer loader and mini-excavator travel drives

• Road Construction Equipment: Roller vibratory drum drives

• Agricultural Machinery: Large sprayer travel drives, combine harvester header drives

• Mining Equipment: Underground mining vehicle travel drives

• Material Handling: Telescopic handler travel drives

• Forestry Machinery: Feller buncher travel drives

• Industrial Drives: Winch drives and heavy material handling equipment

Expert Maintenance Tips

1. Shaft seals and all O-rings must be replaced after every disassembly.

2. Pre-lubricate all moving parts with clean hydraulic fluid before assembly.

3. Purge all air from the motor housing before initial start-up, and run at moderate load and speed for 10–15 minutes for break-in.

4. Recommended maximum system operating temperature should not exceed 82°C to ensure seal and fluid service life.

5. Monitor case drain flow regularly — an abnormal increase indicates potential piston or cylinder wear.

6. Weight is approximately 60–75 kg — use proper lifting equipment during installation and removal to prevent personal injury or component damage.

7. Ensure hydraulic system filtration meets β₁₀ ≥ 75 (ISO 4406 cleanliness code不低于 18/16/13) to maximize motor service life.

8. For wheel mount applications, strictly follow specified bolt torque and use thread-locking compound to prevent loosening.