M5X130 Swing Motor
The M5X130 is a classic swash-plate axial piston swing motor manufactured by Kawasaki. It is widely used for upper structure rotation drive on 12–18 ton class excavators, commonly assembled with a two-stage planetary reducer under the model M5X130-RG12E.
1. Basic Information
- Model: M5X130 (Integrated reducer version: M5X130-RG12E)
- Brand: Kawasaki Precision Machinery
- Applicable machine weight: 12–18 ton excavators
- Structure: Fixed displacement piston motor with built-in parking brake, integrated relief & charge valves, and two-stage planetary reducer
- Weight: Approx. 85 kg (motor only); 130 kg (motor with reducer)
2. Main Technical Parameters
- Displacement: 129.2 cc/r
- Rated pressure: 33 MPa; Maximum pressure: 39 MPa
- Rated flow: 200 L/min; Maximum flow: 240 L/min
- Motor output torque: 670 N·m @ 33 MPa
- Reducer gear ratio: 20.01
- Reducer output torque: 13,400 N·m
- Maximum motor speed: 1,800 rpm
- Brake type: Spring-applied parking brake, hydraulically released (Release pressure: 1.4–2.1 MPa)
- Shaft type: Spline shaft
- Mounting flange: 8 pcs M12 bolts, pitch circle diameter φ210 mm
3. Structure & Features
1. Integrated valve assembly: Equipped with built-in relief valve, charge valve and anti-reverse valve, simplifying pipeline layout and improving response performance.
2. Compact integrated design: Motor, brake and valve assembly are combined as one unit; direct connection with reducer saves installation space.
3. Dependable braking system: Automatically locks up when power or hydraulic pressure is lost to prevent unexpected rotation. Low brake operating pressure ensures smooth operation.
4. High efficiency & durability: Swash-plate piston design delivers high efficiency and low noise. Adopts high-strength materials and precision machining for long service life.
5. Easy maintenance: Single oil drain port and easily replaceable seals effectively reduce equipment downtime.
4. Common Models & Interchangeable Parts
- Standard type: M5X130 (without reducer)
- Integrated reducer type: M5X130-RG12E (most widely used)
- Alternative models: MSG-80P, KYB PSVD2-130, Doosan Mottrol TM130
5. Typical Applicable Machines
- Caterpillar: E318D, E320D, E323D
- Komatsu: PC130, PC160, PC180
- Doosan: DH150, DX170
- Sany: SY135, SY155, SY175
- XCMG: XE135, XE150, XE180
- Kobelco: SK140, SK160, SK180
I. Core Specifications
1. Model: M5X130
2. Type: Swashplate axial piston hydraulic motor
3. Compatible Machinery:
• Excavators: Models such as ZAX200, ZAX210, EX200-5, SK200-8, etc.
• Other construction equipment: Certain cranes, drilling rigs, and pile-driving machinery requiring slewing functionality.
4. Pressure & Speed:
• Maximum operating pressure: Typically 25–32 MPa (varies by model).
• Maximum output speed: Approximately 100–120 rpm (dependent on load and hydraulic system).
5. Torque Output:
• Maximum theoretical torque: Ranges from 5,000 to 13,000 N·m, depending on the model.
6. Structural Features:
• Material: Alloy steel or high-strength aluminum alloy for corrosion resistance and lightweight design.
• Integrated components: Includes makeup valves, slewing brakes, relief valves, and other auxiliary parts to ensure smooth and safe operation.
• Superior sealing performance: Prevents dust and moisture ingress, extending service life.
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II. Function & Applications
1. Core Function:
• Converts hydraulic energy into mechanical energy to drive the excavator’s upper slewing platform for 360° rotation.
• Enables precise control of slewing motions, including start/stop, acceleration/deceleration, and positioning, via hydraulic flow and pressure regulation.
2. Application Scenarios:
• Slewing actions during excavator operations (e.g., digging, loading, steering).
• High-precision slewing control in construction equipment such as cranes, drilling rigs, and pile drivers.
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III. Technical Advantages
1. High Efficiency & Energy Savings:
• Optimized hydraulic circuit design minimizes energy loss and improves system efficiency.
2. Exceptional Durability:
• High-strength materials and precision machining ensure reliability under harsh conditions (e.g., high temperatures, dust, heavy loads).
3. Precise Control:
• Works with advanced hydraulic control systems to achieve micro-adjustments and high-accuracy positioning of slewing motions.
4. Easy Maintenance:
• Modular design simplifies disassembly and repair; key components can be replaced individually, reducing maintenance costs.
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IV. Selection & Compatibility
1. Compatible Models:
• Selection must match the excavator model and slewing system parameters.
• Commonly compatible brands: Komatsu, Kobelco, Hitachi, Caterpillar, etc.
2. Key Parameter Matching:
• Hydraulic system pressure: Ensure the motor’s rated pressure aligns with the excavator’s hydraulic system.
• Output torque: Choose a torque rating based on equipment weight and slewing resistance.
• Mounting dimensions: Verify flange size, shaft diameter, etc., for compatibility with the equipment.
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