YUKEN vane pump PV2R34、PV2R4A
YUKEN PV2R series vane pumps are widely recognized for their excellent high-pressure performance, stable operation, and low noise, and the PV2R34 and PV2R4A models are medium to large-displacement variants designed for heavy-duty industrial hydraulic systems. These pumps are specifically tailored for high-load applications, including large-scale injection moulding machines, hydraulic forging presses, heavy construction machinery, and other equipment that demands continuous, stable hydraulic fluid supply and reliable performance under long-term high-pressure conditions.
Consistent with the core design philosophy of the PV2R series, the PV2R34 and PV2R4A vane pumps adopt integral driving components integrated into a cartridge kit. This cartridge structure enables quick and convenient replacement of worn parts without full disassembly of the entire pump, effectively reducing equipment downtime and maintenance costs. In addition, the optimized vane and cam ring structure enhances wear resistance and sealing performance, while the rational design of the oil distribution window avoids oil trapping, ensuring smooth operation and extended service life even in harsh industrial environments with continuous high-load work.
Technical Specifications of YUKEN PV2R34, PV2R4A
| Parameter | YUKEN Vane Pump PV2R34 | YUKEN Vane Pump PV2R4A |
|---|---|---|
| Geometric Displacement Range | 33.5–34.2 cm³/rev (2.044–2.087 cu.in/rev) | 40.1–40.8 cm³/rev (2.447–2.489 cu.in/rev) |
| Maximum Operating Pressure (for anti-wear petroleum base oils) | 21 MPa (3050 psi) | 21 MPa (3050 psi) |
| Maximum Operating Pressure (for R&O petroleum base oils) | 21 MPa (3050 psi) | 21 MPa (3050 psi) |
| Maximum Operating Pressure (for water-containing fluids and phosphate ester synthetic fluids) | 16 MPa (2320 psi) (with special Viton seals) | 16 MPa (2320 psi) (with special Viton seals) |
| Minimum Operating Pressure (for water-containing and synthetic fluids) | 7 MPa (1020 psi) | 7 MPa (1020 psi) |
| Shaft Speed Range | 600 to 1800 rpm (minimum 1000 rpm under high-pressure conditions) | 600 to 1800 rpm (minimum 1000 rpm under high-pressure conditions) |
| Mounting Type | Foot mounting (L) or flange mounting (F) (foot mounting as standard) | Foot mounting (L) or flange mounting (F) (foot mounting as standard) |
| Shaft Rotation Direction | Clockwise (R) when viewed from the shaft end (standard); counterclockwise rotation available on request | Clockwise (R) when viewed from the shaft end (standard); counterclockwise rotation available on request |
Additional Information
YUKEN PV2R34 and PV2R4A vane pumps are compatible with various hydraulic fluids, including anti-wear petroleum base oils (for maximum 21 MPa pressure), R&O petroleum base oils, water-containing fluids (water-in-oil emulsions, water glycols), and phosphate ester-based synthetic fluids. When using phosphate ester fluids, special Viton seals are required, and the model number should be prefixed with “F” when ordering.
The flow rate and power consumption of the pumps vary with shaft speed and operating pressure; detailed data can be found in YUKEN’s official technical documentation (relevant sections for the PV2R series). The weight of the pumps is approximately 15.5–17.0 kg for PV2R34 and 17.5–19.0 kg for PV2R4A, depending on the mounting type and specific configuration. Their robust structure and optimized design make them suitable for long-term continuous operation in heavy-duty industrial scenarios.
To ensure reliable and long-term operation, it is crucial to comply with the suction conditions: the suction pressure should be in the range of -20 to +30 kPa (5.9 inches of mercury vacuum to +4.3 PSIG). The maximum allowable shaft runout must not exceed 0.1 mm TIR, and the angular misalignment must not exceed 0.2°. Regular maintenance and inspection of the cartridge components are also recommended to extend the pump’s service life.
For more information on spare parts, warranty terms, and maintenance guidelines, please contact an official YUKEN representative or refer to the complete technical specification for the PV2R series.
