MS18-1-127-R18-1110-57EH Poclain Hydraulic Motor 1911cc 450bar

Product Overview

The MS series is Poclain Hydraulics’ globally renowned multipurpose direct-drive hydraulic motor range, featuring a proven radial piston cam-ring design that represents the quintessential LSHT (Low-Speed High-Torque) motor category. With exceptional low-speed stability, ultra-high starting torque, and outstanding reliability, these motors have established themselves as an unrivaled benchmark in the hydraulic motor market worldwide.

The MS18 series is the large-displacement member of the MS family, delivering maximum displacement of 2,812 cc/rev, maximum power of 70 kW, and maximum working pressure of 450 bar. The MS11 series delivers maximum displacement of 1,687 cc/rev and maximum power of 50 kW. The MS series features a modular design philosophy for easy deployment across construction equipment, material handling, agriculture, environment, mining, rail, marine, and industry applications.

Our product provides a fully interchangeable direct replacement for the original Poclain Hydraulics MS 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: MS18-1-127-R18-1110-57EH

Technical Specifications (Bulleted List)

• Full Model: MS18-1-127-R18-1110-57EH

• Brand: Poclain Hydraulics

• Series: MS18 (MS Multipurpose Series)

• Type: LSHT Radial Piston Hydraulic Motor

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

• Displacement Code: 127 → 1,911 cm³/rev (116.6 in³/rev)

• Max. Displacement: 1,911 cm³/rev

• Theoretical Torque @ 100 bar: 3,038 Nm (1,545 lb·ft)

• Max. Working Pressure: 450 bar (6,527 PSI)

• Max. Power: 70 kW (94 HP)

• Max. Speed: 115 rpm

• Motor Inertia: 0.2 kg·m²

• Mounting: 1110 Standard Classic Mounting Dimensions (Wheel Flange)

• Shaft Configuration: R18

• Brake Options: 57EH Brake and Seal Configuration

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

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

• Housing Material: High-Strength Cast Iron

• Weight: Approx. 70 kg

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 Torque Output
The MS18-127 delivers 3,038 Nm theoretical torque at 100 bar. Combined with 450 bar working pressure, the maximum output torque is exceptionally high. Maximum power of 70 kW places this motor among the leaders in its class.

3. 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.

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 modular design enables easy deployment across construction equipment, material handling, agriculture, mining, and other demanding applications.

5. Compact Design & High Power Density
Delivers 70 kW output power and 3,038 Nm/100 bar torque in a compact package. Direct-drive design eliminates intermediate transmission components, simplifying system architecture and improving overall efficiency.

Application Areas

The MS18-1-127-R18-1110-57EH radial piston motor is widely used in travel drives and working function drives across heavy construction and industrial equipment:

• Construction Equipment: Large wheel loader and skid-steer loader travel drives

• Road Construction Equipment: Heavy roller vibratory drum drives (Bomag, Dynapac, Hamm)

• Agricultural Machinery: Large combine harvester travel and header drives

• Mining Equipment: Underground mining vehicle and road header travel drives

• Material Handling: Telescopic handler travel drives

• Railway & Marine: Track maintenance equipment, marine deck cranes, port machinery

• 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 approx. 70 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 and single displacement (single speed) configuration. The MS11 series is one of the most widely used families within the MS range, delivering maximum displacement of 1,687 cc/rev, maximum power of 50 kW, and maximum working pressure of 450 bar (max torque 10,700 N.m), with high speed reaching 200 rpm through multispeed design.

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 (Bulleted List)

• 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 (51.0 in³/rev)

• Max. Displacement: 837 cm³/rev

• Theoretical Torque @ 100 bar: Approx. 1,331 Nm

• Max. Working Pressure: 450 bar (6,527 PSI)

• Max. Power: 50 kW (67 HP)

• Max. Speed: 200 rpm

• Speed Range: 0–160 rpm

• Motor Inertia: Approx. 0.04–0.05 kg·m²

• Mounting: 1110 Standard Classic Mounting Dimensions (Wheel Flange)

• Shaft Configuration: R11

• Brake Options: 5EJ0 Brake and Seal Configuration

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

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

• Housing Material: High-Strength Cast Iron

• Weight: Approx. 45–55 kg (depending on configuration)

Key Technical Advantages

1. Optimized Displacement-Power Balance
With 837 cm³ displacement, the MS11-8 strikes an ideal balance between speed capability (200 rpm) and torque output (approx. 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, enabling direct load drive without additional speed reducers.

3. Compact Design & High Power Density
Delivers 50 kW output power and approx. 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 and maximum torque of 10,700 N.m—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

• Railway & Marine: Track maintenance equipment, 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 45–55 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.