theYUKEN Variable Piston Pump AR22-FR01C-22:
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1. Model Breakdown
• AR22:
• Series Identification: YUKEN AR series swashplate axial piston variable-displacement pump, designed for high-pressure, low-flow hydraulic systems.
• Displacement: 22 cm³/rev (theoretical displacement), indicating 22 mL of hydraulic oil output per revolution.
• FR01C:
• Control Method:
• F: Pressure compensation control (Flow Compensation), automatically adjusting displacement based on load pressure to maintain stable flow.
• R01: Remote pressure regulation capability, allowing external signals (e.g., solenoid valves) to set pressure remotely.
• C: Proportional solenoid control interface, supporting electro-hydraulic proportional control (e.g., PLC signal input).
• 22:
• Design Version Number: Indicates iterative version or specific system parameter adaptation.
2. Key Specifications
(1) Performance Metrics
• Rated Pressure: 25 MPa (250 bar)
• Peak Pressure: 28 MPa (280 bar, short-term allowable)
• Speed Range:
• Rated Speed: 1,800 rpm
• Maximum Speed: 2,200 rpm (transient)
• Minimum Speed: 600 rpm (stable output)
• Volumetric Efficiency: ≥90% (under standard conditions)
• Total Efficiency: ≥85% (optimized system energy consumption)
(2) Control Characteristics
• Pressure Compensation Range: 0–25 MPa (adjustable)
• Proportional Control Response Time: ≤50 ms (from signal input to displacement change)
• Flow Adjustment Range: 0–100% (stepless regulation)
(3) Physical Parameters
• Weight: Approx. 12 kg (including housing and basic accessories)
• Port Sizes:
• Inlet: G1/2 (BSP thread)
• Outlet: G1/2
• Control Port: M10×1 (proportional solenoid interface)
• Noise Level: ≤75 dB(A) (measured 1 meter from the pump)
3. Structural Features
• Swashplate Design:
• Pistons are arranged along the drive shaft axis, with displacement adjusted via swashplate angle changes. Compact structure with low inertia.
• High-Pressure Components:
• Cylinder block and pistons made of high-strength alloy steel, surface nitrided for wear and corrosion resistance.
• Sealing System:
• Shaft seal uses dual-lip fluororubber for leakage prevention; port O-rings enhance connection reliability.
• Cooling Method:
• Natural cooling (ensure ventilation); optional forced air or water cooling kits available.
4. Applications
• Machine Tool Hydraulic Systems:
• Spindle lubrication and fixture actuation in CNC machining centers.
• Injection Molding Machines:
• Precise control of mold opening/closing and injection speed.
• Die-Casting Machinery:
• High-pressure driving of clamping mechanisms and ejection systems.
• Light Construction Equipment:
• Hydraulic supply for travel motors and swing mechanisms in mini excavators.
• Automated Production Lines:
• Hydraulic power for robot joints and material handling devices.
5. Installation & Commissioning
(1) Installation Requirements
• Orientation: Horizontal installation with drive shaft and motor coaxiality error ≤0.05 mm.
• Coupling: Use flexible couplings to buffer startup shocks.
• Oil Cleanliness: NAS 1638 Class 8 or ISO 4406 19/17, with filtration precision ≤10 μm.
(2) Commissioning Steps
1. Pressure Setting:
• Set system pressure via remote regulator (do not exceed 25 MPa).
2. Proportional Control Calibration:
• Verify linearity between flow and input signal (0–10 V or 4–20 mA).
3. Load Testing:
• Run for 10 minutes under no-load conditions to check for leaks and abnormal vibrations; gradually increase load to rated pressure.
6. Maintenance & Troubleshooting
(1) Routine Maintenance
• Oil Inspection: Check viscosity, water content, and particle contamination every 200 hours.
• Filter Replacement: Replace suction filters every 500 hours and return filters every 1,000 hours.
• Seal Inspection: Annual checks on shaft seals and port O-rings; replace as needed.
(2) Common Faults & Solutions
【表格】
Symptom Possible Causes Solutions
Insufficient Flow Swashplate jamming, suction blockage Clean swashplate control valve, check filters
Pressure Fluctuation Proportional solenoid failure, oil contamination Replace solenoid, change hydraulic oil
Abnormal Noise Bearing wear, cavitation Replace bearings, check suction vacuum
Leakage Seal aging, housing cracks Replace seals, repair/replace pump body
7. Safety Precautions
• High-Pressure Risk: Fully depressurize the system before disassembly; avoid working under pressure.
• Electrical Safety: Ground proportional control interfaces to prevent electromagnetic interference.
• Environmental Requirements: Avoid prolonged use in humid or corrosive environments.
8. Selection Recommendations
• System Matching: Select models based on maximum system flow (Q = displacement × speed) and pressure requirements.
• Control Compatibility: Confirm compatibility with proportional signal inputs (e.g., 0–10 V).
• Spare Parts Stocking: Recommend stocking swashplate control valves, proportional solenoids, and other critical wear parts.
