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MOOG HPR18A1RKP100TM28J1Y00 High-Performance Radial Piston Hydraulic Pump
1. Product Description
HPR18A1RKP100TM28J1Y00 is a high-pressure radial piston hydraulic pump from MOOG HPR series, designed for heavy-duty industrial and mobile hydraulic systems requiring high efficiency, long service life and precise flow control. This model features a 18cc/rev displacement, right-hand rotation, parallel port configuration and high-pressure rating, making it suitable for both fixed industrial equipment and off-highway mobile machinery.
Model Code Definition:
- HPR: MOOG High-Pressure Radial Piston Pump Series
- 18: Nominal displacement 18 cm³/rev
- A: Standard housing and mounting configuration
- 1: Rotation direction code
- RKP: Parallel port, keyed shaft, high-performance build variant
- 100: Maximum continuous pressure rating, up to 100 bar
- TM28: Shaft and mounting interface specification
- J1Y00: Seal material, control option and factory configuration code
Core Technical Specifications:
1. Displacement: 18 cm³/rev
2. Maximum Operating Pressure: Up to 100 bar continuous, depending on system configuration
3. Rotation Direction: Right-hand rotation
4. Shaft Design: Keyed shaft, compatible with standard hydraulic pump drives
5. Port Configuration: Parallel port arrangement
6. Seal Material: Standard nitrile and fluorocarbon seals for wide temperature and oil compatibility
7. Operating Temperature: -40°C ~ +120°C with suitable hydraulic oil and seal configuration
8. Mounting: Standard industrial SAE or flange mounting interface
9. Weight: Approx. 4.5kg; Origin: Germany / USA configuration depending on production batch
10. Certification: CE, ISO 4409, industrial hydraulic component safety standards
2. Core Product Functions
- High-Pressure Hydraulic Power Generation Converts mechanical input torque into high-pressure hydraulic oil flow, providing reliable power supply for hydraulic cylinders, hydraulic motors, control valves and actuators in demanding systems.
- Compact Radial Piston Design Radial piston arrangement delivers high power density in a compact envelope, making it suitable for installations with limited space in mobile machinery and industrial power units.
- Low Noise & Smooth Operation Precision-machined piston, cylinder block and valve plate components reduce flow pulsation, vibration and operating noise, improving system stability and operator comfort.
- High Efficiency Under Variable Loads Optimized internal friction design maintains high volumetric and mechanical efficiency across different speeds, pressures and oil viscosity conditions.
- Durable Heavy-Duty Construction High-strength cast iron housing, hardened steel pistons and reinforced bearing system extend service life under continuous high-pressure operation.
- Flexible Mounting & Drive Compatibility Standard mounting flange and keyed shaft allow direct replacement in many existing hydraulic pump installations without major design changes.
- Wide Fluid Compatibility Compatible with mineral hydraulic oils, synthetic oils and environmentally friendly biodegradable fluids, subject to seal and temperature rating verification.
- Integrated Protection Against Contamination Close tolerances and robust internal components allow reliable operation with properly filtered hydraulic oil, while maintaining long-term performance in harsh industrial environments.
3. Typical Application Scenarios
- Mobile Construction Machinery Hydraulic power units for excavators, loaders, cranes, forklifts and aerial work platforms.
- Industrial Hydraulic Power Units Presses, injection molding machines, die casting machines, machine tools and test bench systems.
- Off-Highway Agricultural Equipment Tractors, harvesters, sprayers and agricultural implement hydraulic systems.
- Material Handling Equipment Conveyor drives, lifting platforms, pallet trucks and automated warehouse actuators.
- Marine & Offshore Auxiliary Systems Deck machinery, hatch cover actuators, crane hydraulic systems and offshore equipment auxiliary drives.
- Renewable Energy Equipment Wind turbine pitch control hydraulic units, solar tracking systems and hydraulic actuator drives.
- Hydraulic System Retrofit & Replacement Direct replacement for failed or outdated pumps in existing industrial and mobile hydraulic installations.
4. Common Faults & Troubleshooting Solutions
4.1 No Pressure or Low System Pressure
Causes: Incorrect rotation direction; insufficient oil level; clogged suction filter; worn piston/cylinder block; internal leakage; faulty pressure relief valve. Solutions: Verify correct right-hand rotation direction; check oil level and suction line; clean or replace suction filter; inspect pump internal wear; test and recalibrate system relief valve.
4.2 Excessive Noise and Vibration
Causes: Cavitation due to restricted suction; air leakage in suction line; contaminated oil; worn bearings; misaligned drive coupling; damaged valve plate or piston. Solutions: Check suction line diameter and filter condition; tighten suction connections; bleed air from system; replace contaminated hydraulic oil; inspect drive alignment; overhaul or replace worn bearings and internal components.
4.3 High Oil Temperature and Overheating
Causes: Continuous overpressure operation; low oil level; contaminated oil; inefficient heat exchanger; excessive internal leakage; worn pump components. Solutions: Reduce operating pressure to rated range; check oil level and cooler performance; replace hydraulic oil and filters; inspect internal leakage; repair or replace worn pump.
4.4 External Oil Leakage
Causes: Damaged shaft seal; loose port connections; worn cover gasket; cracked housing; improper mounting torque. Solutions: Replace shaft seal and gaskets; tighten port fittings with thread sealant; inspect housing for cracks; apply correct mounting bolt torque sequence.
4.5 Internal Leakage and Slow Actuator Movement
Causes: Worn piston/cylinder block assembly; damaged valve plate; high oil contamination; decreased volumetric efficiency. Solutions: Analyze oil contamination level; replace system filters; inspect pump internal components; repair or replace pump if wear exceeds service limits.
4.6 Shaft Seal Failure and Oil Contamination
Causes: Damaged or misaligned shaft; excessive shaft runout; oil temperature beyond seal rating; incompatible fluid type; contaminated seal lip. Solutions: Inspect shaft runout and coupling alignment; confirm seal compatibility with hydraulic fluid; replace seals with original MOOG recommended parts; maintain proper oil temperature.
5. Import & Compliance Supporting Documents
1. Customs Documents: Certificate of Origin (COO), Factory Certificate of Conformity (COC), CE Declaration of Conformity 2. Safety Files: SDS/MSDS for hydraulic pump metal components, seals and hydraulic oil compatibility 3. Technical Data: Official datasheet, dimension drawing, performance curve, installation and maintenance manual 4. HS Code: 84135000 Reciprocating positive displacement pumps; or 84136090 Rotary positive displacement pumps depending on customs classification 5. Country of Origin: Germany / USA; Gross Weight: ~4.5kg 6. Lead Time: In stock 1~4 working days; factory original order 8~12 weeks 7. Matching Spare Parts: Shaft seal kit, gasket set, bearing kit, suction filter, pressure relief valve cartridge, hydraulic oil
