YUKEN PV2R Series Single Vane Pump Product Manual

I. Product Overview

II. Model Explanation

Model Format

Code Meaning

Model Example

III. Core Technical Parameters

1. Basic Performance Parameters

2. Hydraulic Oil Adaptation Requirements

3. Oil Suction Pressure Requirements

IV. Structural Features

1. Low-Noise Design: Adopts high-order equation stator curve to optimize vane movement trajectory, reduce pressure pulsation, and the noise is only 45~70 dB (A) under test conditions.
2. Chuck-Type Assembly: Rotor, vane, stator and valve plate are integrated into one body, which can be disassembled and replaced as a whole without disassembling the pump body and pipeline, greatly shortening the maintenance downtime.
3. High-Pressure Stability: Double-acting vane structure, optimized pressure balance, precision machining of stator curve, uniform contact stress, and maximum pressure up to 21 MPa.
4. Wide Flow Coverage: Displacement ranges from 5.8~237 cm³/rev, suitable for small, medium, large and extra-large displacement requirements.
5. Multiple Mounting Methods: Supports two mounting methods: flange (F) and foot (L), adapting to different equipment layouts.
6. Optional Seals: Standard nitrile rubber (NBR) seals; fluorine rubber (FKM) seals are optional for phosphate ester fluid working conditions.

V. Performance Characteristics

1. Pressure-Flow Characteristics

• Test Conditions: Oil viscosity 20 mm²/s (ISO VG32), oil temperature 50℃.
• Flow increases linearly with speed and decreases slightly with increasing pressure (affected by volumetric efficiency).
• Typical Flow: PV2R1-6 (about 10 L/min at 1800 r/min); PV2R4-237 (about 420 L/min at 1800 r/min).

2. Input Power Characteristics

• Power increases with pressure and speed, conforming to the formula P=pq/(60η) (P: Power, p: Pressure, q: Flow, η: Efficiency).
• Typical Power: PV2R1-6 (about 3 kW at 21 MPa and 1800 r/min); PV2R4-237 (about 70 kW at 17.5 MPa and 1800 r/min).

3. Noise Characteristics

• Test Conditions: Viscosity 20 mm²/s, measured 1 meter behind the pump, background noise 40 dB (A).
• Small Displacement (PV2R1-6): About 55 dB (A) at 1200 r/min and 21 MPa.
• Extra-Large Displacement (PV2R4-237): About 65 dB (A) at 1200 r/min and 17.5 MPa.

VI. Installation and Maintenance

1. Installation Dimensions (Interface Specifications)

2. Installation Notes

• The coaxiality error between the pump shaft and the drive shaft shall be ≤0.1 mm, and the angle error shall be ≤0.5°.
• The oil suction pipeline shall be short and thick, with fewer elbows to reduce oil suction resistance and avoid cavitation.
• Reserve maintenance space at the installation position to facilitate oil inspection and component replacement.

3. Maintenance Points

• Regular Oil Change: Change the oil every 2000~4000 hours. It is recommended to use anti-wear hydraulic oil with viscosity ISO VG32~VG46, and control the oil temperature at 10~60℃ (optimal 20~50℃).
• Filter Maintenance: Regularly clean/replace the oil suction and return filters to keep the oil clean (contamination level ≤NAS 8).
• Seal Inspection: Regularly check the shaft seals and O-rings, and replace them in time if there is leakage to avoid oil loss and contamination.
• Chuck Replacement: When the pressure drops, noise increases or internal leakage exceeds the standard, replace the chuck assembly as a whole to quickly restore performance.
• Bearing Inspection: In case of abnormal vibration/noise, check the bearing wear and replace it with the appropriate model in time (e.g., 6004 for PV2R1, 6209 for PV2R4).

VII. Application Fields

• Injection Molding Machines: PV2R1 (50~200T), PV2R2 (200~500T), PV2R3 (500~2000T), PV2R4 (≥2000T).
• Hydraulic Presses: Small (≤100 tons), Medium (100~500 tons), Large (500~2000 tons), Extra-Large (≥2000 tons).
• Bending Machines/Punch Presses: Small (≤100 tons), Medium (100~300 tons), Large (300~600 tons).
• Other Equipment: Die-casting machines, rubber vulcanizing machines, CNC machine tools, construction machinery, etc.

VIII. Accessory Information