Hydraulic Spare parts
4 week ago
Product details
The M5X130 hydraulic spare parts are critical components of swashplate-type axial piston pumps/motors, widely utilized in excavators, construction machinery, and other heavy-duty applications. Below is a detailed breakdown of their core components and technical characteristics:
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I. Key Components
1. Drive Shaft
• Transmits power to the internal hydraulic pump mechanism, requiring high strength and wear resistance.
• Typically made of alloy steel with quenched surfaces for enhanced hardness.
2. Piston Assembly (Piston Shoe & Cylinder Block)
• Piston Shoe: Interfaces with the swashplate to convert rotational motion into linear motion.
• Cylinder Block: Houses pistons to form sealed chambers.
• Constructed from high-carbon steel or alloy tool steel, precision-machined for optimal sealing.
3. Valve Plate
• Controls hydraulic fluid flow direction, enabling suction and discharge switching.
• Requires ultra-precision grinding to minimize leakage and wear.
4. Swash Plate
• Adjusts piston stroke length to vary pump displacement.
• Features variable-angle design for variable displacement pump functionality.
5. Spring Assembly (Spring Plate & Retainer Plate)
• Provides preload to ensure tight contact between pistons and swashplate.
• Made of spring steel with high elastic limits and fatigue resistance.
6. Seals & Bearings
• Seals: Prevent hydraulic fluid leakage (materials: fluororubber or polyurethane).
• Bearings: Support rotating components, reduce friction, and match pump lifespan.
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II. Technical Characteristics & Advantages
1. High-Pressure Design
• Rated pressure exceeds 35 MPa, suitable for heavy-duty applications.
• Piston-cylinder clearance sealing minimizes internal leakage.
2. Variable Displacement Control
• Adjusts swashplate angle to modify displacement, supporting constant power or constant pressure modes.
• Fast response time meets excavator compound motion demands.
3. High Efficiency
• Volumetric efficiency >95%, superior mechanical efficiency compared to gear pumps.
• Swashplate structure reduces energy loss and fuel consumption.
4. Modular Design
• Core components are individually replaceable, lowering maintenance costs.
• Compatible with multiple brands (e.g., Caterpillar 320C, Kobelco SK200-8).
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III. Applications
1. Excavator Swing System
• M5X130 motors drive swing mechanisms for smooth starting/braking.
• Variable control optimizes swing speed-torque matching.
2. Travel Drive System
• Functions as a travel motor with high/low-speed shifting.
• Impact-resistant design adapts to rugged terrain.
3. Auxiliary Pump in Multi-Pump Systems
• Supplements main pumps to increase system flow.
• Collaborates with primary pumps for optimized power distribution.
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IV. Selection & Maintenance Guidelines
1. Component Selection
• Verify compatibility with host equipment (e.g., Kawasaki OEM parts or alternatives).
• Prioritize ISO 9001-certified suppliers for quality assurance.
2. Installation Precautions
• Clean hydraulic system to prevent contaminant ingress.
• Torque bolts to specifications to avoid leaks.
3. Maintenance Intervals
• Replace hydraulic oil and filters every 2,000 operating hours.
• Inspect seals for aging and replace as needed.
4. Troubleshooting
• Abnormal Noise: Check bearing/piston wear.
• Insufficient Pressure: Investigate valve plate wear or relief valve failure.
• Leakage: Replace seals or inspect housing cracks.
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V. Market Supply
• OEM Parts: Available through Kawasaki’s official channels, offering reliability at premium pricing.
• Aftermarket Alternatives: Domestic manufacturers (e.g., Focor, Dakota Hydraulic) provide compatible parts at 60–80% of OEM costs, subject to material/process verification.
• Lead Time: Standard parts in stock; custom components require 1–2 weeks production.
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Ningbo Hengnuo Hydraulic Drive Co.,Ltd
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