MSE18-2-A24 Poclain Hydraulic Motor 2812cc 400 bar

Product Overview

The MSE18-2-A24-A18-1840-5K00 is a high-performance two-speed variable displacement model within the 18 frame size of Poclain Hydraulics’ MS/MSE Series multipurpose radial piston hydraulic motors. The MS/MSE18 Series is a high-power direct drive motor range developed for the most demanding operating conditions, with displacements from 1091 to 2812 cc/rev, maximum pressure from 400 to 450 bar, maximum torque up to 17900 N·m, maximum power up to 100 kW, and multi-speed concept design with maximum speed up to 380 rpm.

The “E” in MSE18 denotes the enhanced design. Compared with the standard MS18 Series, MSE18 maintains the same displacement range while offering higher rated continuous pressure (300 bar vs 250 bar) and higher maximum power output (100 kW vs 68 kW), suitable for demanding applications requiring sustained high-load operation. The motor features a modular design architecture, composed of torque displacement module, distributor module, brake/wheel mounting module, output shaft module, and other modules, flexibly configurable as a wheel motor or shaft motor, widely used in construction equipment, material handling, agricultural, mining, on rail, marine, and industrial sectors.

Model code breakdown: MSE18 = MSE Series size 18 enhanced version; 2 = dual displacement configuration (two-speed); A24 = displacement code, corresponding to maximum displacement 2812 cc/rev; A18 = mounting flange and port configuration; 1840 = wheel hub shaft output; 5K00 = variant suffix, including brake and additional configuration.

The motor’s radial piston cam design, combined with the precision spherical control area structure, enables the motor to maintain smooth output of full rated torque even at extremely low speeds, completely eliminating the “crawling” or vibration phenomena commonly observed in conventional orbital motors. As a drop-in replacement, the motor is fully compatible with the OEM Poclain specification in mounting interface, port configuration, and performance characteristics, enabling direct replacement without hydraulic circuit or mounting bracket modification. Every unit undergoes 100% simulation-based testing prior to shipment, covering displacement calibration, torque output, pressure holding, and internal leakage.

Technical Specifications

All parameters below are based on Poclain Hydraulics official product technical documentation and verified supplier technical pages:

MSE18-2-A24-A18-1840-5K00 Technical Specifications:

• Complete Model: MSE18-2-A24-A18-1840-5K00

• Brand: Poclain Hydraulics

• Product Series: MS/MSE18 Series multipurpose radial piston motor, enhanced version

• Product Type: Two-speed variable radial piston motor, wheel/tool direct drive

• Max Displacement: 2812 cc/rev (171.6 cu.in/rev)

• Displacement Range (Series): 1091 / 1395 / 1571 / 1747 / 1911 / 2099 / 2340 / 2560 / 2812 cc/rev

• Half Displacement (This Model): Approx. 1406 cc/rev (two-speed half displacement)

• Rated Continuous Pressure (MSE18): 300 bar (4351 psi)

• Peak Pressure (MSE18): 400 bar (5801 psi)

• Max Torque (Series): 17900 N·m (13202 lb-ft)

• Max Power (MSE18): 100 kW (134 HP)

• Max Speed (MSE18): 380 rpm

• Drive Type: Radial piston cam design

• Mounting: Wheel mount / shaft mount

• Motor Type: Wheel motor / shaft motor

• Brake Type: Service brake / parking brake / hydrostatic boosted brake (optional)

• Anti-Skid Feature: TwinLock™ (optional)

• Hydraulic Fluid: Mineral oil-based hydraulic fluid

• Weight: Approx. 115 – 160 kg (with brake configuration)

MS18 vs MSE18 Series Core Parameter Comparison:

• Max Displacement: MS18 — 2812 cc/rev; MSE18 — 2812 cc/rev

• Max Torque (Series): MS18 — 17900 N·m; MSE18 — 17900 N·m

• Peak Pressure: MS18 — 450 bar; MSE18 — 400 bar

• Continuous Pressure: MS18 — 250 bar; MSE18 — 300 bar

• Max Speed: MS18 — 315 rpm; MSE18 — 380 rpm

• Max Power: MS18 — 68 kW; MSE18 — 100 kW

Note: Specifications are based on Poclain Hydraulics official product technical documentation (poclain.com, poclain-hydraulics.cn) and verified supplier technical pages (Aspect Plus, Hainzl, Made-in-China, etc.). The MS/MSE18 Series features a modular design with model code options for displacement, mounting flange, brake, shaft output, and other configurations. Always verify against the complete model code and consult the latest Poclain official technical documentation during selection.

Key Technical Advantages

1. Enhanced Design with Higher Continuous Pressure and Power Output

The MSE18 Series is the enhanced version of the MS18 Series. While maintaining the same displacement range (1091 – 2812 cc/rev) and maximum torque (17900 N·m), the MSE18 increases rated continuous pressure from MS18’s 250 bar to 300 bar, maximum power from 68 kW to 100 kW, and maximum speed from 315 rpm to 380 rpm. This enhanced design enables the MSE18 to operate under higher sustained loads, particularly suitable for heavy-duty construction machinery and mining equipment requiring prolonged continuous operation.

2. Two-Speed Variable Function for Wide Operating Range Adaptability

The MSE18-2-A24 features a dual displacement (two-speed) configuration, supporting switching between two displacement settings. Utilizing a built-in electronically controlled pilot valve, it enables seamless switching between “high-torque, low-speed climbing” and “low-torque, high-speed travel” while the machine is in motion. The MS18/MSE18 starting performance is 15% greater than a high-speed motor and gearbox combination and 12% higher overall, providing greater operator comfort and efficiency.

3. Radial Piston Cam Design for Ultra-Low-Speed High-Torque Direct Drive

The MSE18 employs Poclain’s classic radial piston cam design, delivering low-speed, high-torque direct drive characteristics. This design enables the motor to output high torque directly at the wheel end or tool end without additional gearbox reduction, simplifying the transmission system structure. Poclain’s patented spherical control area structure enables the motor to maintain smooth output of full rated torque even at extremely low speeds, completely eliminating the “crawling” or vibration phenomena commonly observed in conventional orbital motors.

4. Modular Design with TwinLock™ Anti-Skid Function

The MSE18 Series employs a modular design architecture, allowing users to select different displacements, mounting flanges, brake types (service/parking/hydrostatic boosted), shaft output forms (wheel hub shaft/shaft motor), and other configurations based on specific application requirements. The optional TwinLock™ anti-skid function is available, with the solution available from MS02 to MS50 and MHP motor series, further enhancing equipment traction performance and safety on low-friction surfaces.

5. 100% Simulation-Based Testing and Drop-In Interchangeability

Every MSE18-2-A24 undergoes 100% simulation-based testing prior to shipment. Test protocols cover displacement calibration, torque output verification, pressure holding performance, and internal leakage detection. As a drop-in replacement, the motor is fully compatible with the OEM Poclain specification in mounting dimensions (A18 flange configuration), port layout (1840 wheel hub shaft output), and performance characteristics. The product is widely used in Caterpillar, Volvo, Komatsu, JCB, John Deere, and other brand construction machinery for both OEM and aftermarket applications.

Application Areas

• Compactor Travel Drive: Travel motors for SDLG and other brand vibratory and pneumatic tire compactors — the most typical and primary application of the MS/MSE18

• Loader Wheel Drive: Wheel drive systems for Caterpillar 938K/950GC, Volvo L110F/L120H, Komatsu WA320/WA380, and other wheel loaders

• Self-Propelled Sprayers: Travel drives for John Deere 4830/4930, Case IH Patriot 4430/4440, and other large self-propelled sprayers

• Combine Harvesters: Travel drive systems for Claas Lexion 770/780 and other large combine harvesters

• Grader Assist Drive: Assist drive systems for various graders, with VDF freewheeling valves for stable drive

• Mining & Tunneling Equipment: Wheel drive motors for underground auxiliary transport vehicles and mining trucks

• Railway Maintenance Equipment: Hydraulic drive systems for track maintenance equipment

• Marine & Offshore: Hydraulic drive systems for marine deck machinery and winches

Expert Maintenance Tips

Pre-Installation Checks:

• Verify mounting flange (A18 configuration) alignment with equipment mounting surface; ensure surface is clean and free of burrs

• Inspect port seals for damage and confirm compatibility with the hydraulic fluid in use

• The motor must be fully filled with clean hydraulic oil via the case drain port prior to installation to prevent dry friction damage to piston/cylinder during startup

• Confirm brake (if equipped) release pressure meets system requirements; verify TwinLock™ function (if equipped) is operational

Operational Maintenance:

• Use pressure filters with ≤ 10 μm filtration accuracy; maintain hydraulic oil cleanliness to required level

• Recommended fluid: mineral oil-based anti-wear hydraulic oil; replace filter elements and oil at regular intervals

• Periodically inspect motor exterior for leakage signs, focusing on shaft seal and port connections

• Periodically monitor motor operating temperature and noise level; abnormal increase may indicate internal wear or fluid contamination

• The case drain line must run independently and directly to the hydraulic reservoir — connecting it in series with the system’s main return line is strictly prohibited. If back pressure exceeds the allowable limit, the main shaft oil seal will deform, leak fluid, or even rupture

• Periodically check brake function and release pressure (if equipped); verify TwinLock™ anti-skid function is operational

• Two-speed shifting function should be tested periodically to confirm smooth, shock-free switching

Troubleshooting Guide:

• Motor fails to rotate or speed abnormal: Check hydraulic system supply pressure; verify directional valve and brake release are functioning properly; check oil cleanliness

• Insufficient output torque: Confirm system pressure reaches rated value (300 bar continuous / 400 bar peak); inspect cam ring and pistons for wear

• Abnormal noise or vibration: Check case oil fill level; verify suction line is unobstructed; check mounting bolt tightness

• External leakage: Inspect shaft seal for aging or damage; verify drain line back pressure is within allowable range

• Two-speed switching failure: Check two-speed switching control signal reaches the motor correctly; verify switching valve spool is not stuck

• Brake abnormality: Check brake release pressure; inspect brake friction plates for wear

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