Poclain MS18 Hydraulic Piston Motor

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3 year

Product details

1. Brand & Heritage

• Poclain Hydraulics(founded 1952 in France) is a pioneer inradial piston hydraulic motors, known for their durability and efficiency in heavy-duty applications.

• TheMS seriesis one of Poclain’s flagship radial piston motor lines, designed for high torque and reliability in demanding environments.

2. Model: MS18

• "MS"typically stands for"Medium Speed"or"Medium Size"in Poclain’s naming convention.

• "18"likely refers to the motor’sdisplacement size(e.g., 18 cm³/rev or a related metric), though exact specifications may vary.

• The MS18 is part of a modular series, allowing customization for different torque and speed requirements.

3. Design & Technology

• Radial Piston Configuration: The MS18 usesmultiple pistons arranged radiallyaround a central camshaft. This design provides:

• High torque output(due to large piston area).

• Smooth operation(reduced vibration compared to axial piston motors).

• Durability(robust construction for heavy loads).

• Gerotor Mechanism: Some MS-series motors incorporate agerotor (internal gear)design for efficient power transmission.

• Variable Displacement Option: Certain MS models allow adjustable displacement for precise speed/torque control.

4. Key Specifications (Typical for MS18)

【表格】

Parameter Description

Displacement ~18 cm³/rev (varies by configuration)

Max Pressure Up to 450 bar (6,500 psi)

Max Speed Up to 1,000 rpm (depending on load)

Torque Output High (proportional to displacement)

Mounting Flange or foot-mounted options

Shaft Options Splined, keyed, or flanged output shaft

5. Applications

The MS18 is widely used in:

• Construction Equipment:

• Excavators (swing drives, track drives)

• Wheel loaders

• Drilling rigs

• Agricultural Machinery:

• Tractors (PTO drives)

• Harvesters

• Industrial Machinery:

• Winches

• Conveyor systems

• Presses

• Marine & Offshore:

• Anchor winches

• Propulsion systems

6. Advantages

• High Efficiency: Minimal mechanical losses due to radial piston design.

• Compact & Powerful: Delivers high torque in a relatively small package.

• Reliable: Proven in harsh conditions (dust, mud, extreme temperatures).

• Low Maintenance: Sealed design reduces contamination risks.

7. Variants & Customization

Poclain offers the MS18 in multiple configurations:

• Fixed Displacement: For constant speed/torque applications.

• Variable Displacement: For adjustable performance (e.g., MS18V).

• Brake Motors: Integrated parking brakes for safety.

• Cooling Options: Forced air or liquid cooling for high-duty cycles.

8. Replacement & Compatibility

• The MS18 may replace older Poclain models (e.g., MS11, MS25) or compete with Danfoss/Sauer-Danfoss motors.

• Cross-reference with part numbers (e.g.,MS18-012-E-00) for exact replacements.

9. Modern Equivalents

After Poclain’s acquisition by Danfoss, the MS series evolved into theDanfoss OMS/OMP series, offering similar performance with updated features.

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Ningbo Hengnuo Hydraulic Drive Co.,Ltd

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Main Product: hydraulic motor, gear box, hydraulic pump, hydraulic valve , hydraulic winch, hydraulic system

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