Product Overview
The VP5FA-5-50 is a medium-pressure variable displacement vane pump from the VP※F series, widely used as an energy-efficient hydraulic power source in industrial hydraulic systems. Featuring variable displacement (pressure-compensated) design, the pump automatically adjusts output flow based on system load—reducing displacement to only maintain leakage flow once the set pressure is reached, delivering significant energy savings.
The VP※F series variable vane pumps are manufactured by multiple brands including ANSON (Taiwan), YI-SHING (Taiwan), and YUKEN. The series is renowned for its high efficiency, low noise, and sensitive response, and is widely deployed in machine tools, plastics machinery, construction equipment, and other industrial hydraulic systems.
Designed as a 100% interchangeable direct replacement for the original VP5FA-5-50, this product matches OEM specifications in mounting dimensions, porting interfaces, and performance characteristics. Every unit undergoes 100% simulated duty cycle testing prior to shipment, validating volumetric efficiency, mechanical efficiency, and sealing integrity under actual operating load conditions.
Technical Specifications
Model: VP5FA-5-50
Series: VP※F Series Single Variable Vane Pump
Product Type: Variable Displacement Vane Pump
Frame Size: VP5F
Flow Code: A (A code: 30 L/min @ 3.5 bar, 1800 r/min)
Max Flow (B code configuration): 40 L/min
Geometric Displacement (A code): 16 cc/rev
Geometric Displacement (B code): 22 cc/rev
Pressure Adjustment Range (A code): 15–35 bar
Pressure Adjustment Range (B code): 20–70 bar
Max Operating Pressure (B type 40/70 L/min): 105 bar
Design Number: 50
Shaft Type: S = Splined Shaft
Mounting Type: F = Flange Mounting
Minimum Speed: 800 r/min
Maximum Speed: 1800 r/min
Circuit Type: Open circuit
Hydraulic Fluids: Mineral oil and approved hydraulic fluids
Key Technical Advantages
1. Pressure-Compensated Variable Design for Significant Energy Savings
The VP※F series features pressure-compensated control, where pump output flow automatically adjusts based on system load. When the system reaches the set pressure, the pump automatically reduces displacement to only maintain leakage flow, significantly reducing energy loss and heat generation while extending hydraulic system service life.
2. High Efficiency with Low-Noise Operation
The series incorporates optimized internal flow paths and precision-machined critical friction pairs, delivering high volumetric efficiency and low-noise operation. Under test conditions of 3.5 bar and 1800 r/min, flow is stable with minimal pulsation.
3. Sensitive Response with High Control Precision
VP※F series variable vane pumps feature sensitive response and high precision, rapidly adjusting displacement in response to system pressure changes. This makes them particularly suitable for industrial hydraulic systems requiring precise flow control.
4. 100% Interchangeability – Zero-Modification Drop-In Replacement
Manufactured to exact OEM mounting dimensions, porting specifications, and performance standards, this pump achieves 100% interchangeability with original VP※F series units. No machine modifications are required—simply replace and resume operation, minimizing downtime and reducing maintenance costs.
5. 100% Simulated Duty Cycle Testing for Extreme Environment Reliability
Every pump undergoes 100% simulated duty cycle testing before shipment, validating performance under rated pressure and maximum speed conditions—ensuring long-term reliability in demanding industrial hydraulic applications.
6. Wide Flow and Pressure Adjustment Range
The VP5F offers two flow codes (A: 30 L/min / B: 40 L/min) and two pressure adjustment ranges (A code: 15–35 bar / B code: 20–70 bar). Users can select the optimal configuration based on specific application requirements. B-type configuration delivers maximum operating pressure up to 105 bar.
7. Compact Flange-Mount Design
Featuring flange mounting (F designation), the design is compact and installation is straightforward. Supports a wide speed range of 800–1800 r/min, compatible with various drive motors.
8. Modular Configuration for Versatile Application Adaptation
The VP※F series offers multiple frame sizes (VP5F / VP6F / VP7F), multiple flow codes, and multiple pressure adjustment ranges. Optional splined or keyed shafts are available. This modular design enables rapid adaptation to machine tools, plastics machinery, construction equipment, and other diverse applications.
Application Areas
Machine Tools: CNC machines, machining center hydraulic systems
Plastics Machinery: Injection molding machines, extruder hydraulic systems
Construction Equipment: Mini excavators, loader hydraulic systems
Industrial Hydraulic Systems: General industrial hydraulic power units
Presses & Stamping Equipment: Hydraulic presses, stamping hydraulic systems
Material Handling: Forklift hydraulic systems, lift platforms
Expert Maintenance Tips
Pre-Installation Preparation: Before using the VP※F series variable vane pump, read and understand the complete instruction manual. For first commissioning, fill the pump housing with hydraulic fluid through the case drain port—never operate the pump without fluid.
Suction Line Design: The inlet line should be short and large in diameter, with inlet filter rating not less than 100 µm and flow capacity ≥ 2× pump rated flow. Strictly prevent air suction and cavitation, ensuring suction port pressure is not lower than -0.16 bar (relative pressure).
Speed Limits: VP5F series minimum speed is 800 r/min and maximum speed is 1800 r/min. Ensure the drive motor speed is within this range during selection to avoid overspeed or poor lubrication from low-speed operation.
Pressure Adjustment: The VP※F series is a variable displacement vane pump. During commissioning, set the pressure compensator valve according to the instruction manual specifications. A code pressure adjustment range is 15–35 bar, B code is 20–70 bar. B-type configuration maximum operating pressure is 105 bar—avoid prolonged operation above the rated pressure.
Coupling Alignment: Precise alignment between the pump shaft and drive shaft is required with minimal tolerance. After installation, manually rotate the coupling to verify smooth operation. The pump shaft must not bear radial or axial external loads.
Oil Cleanliness Control: Recommended system filtration not less than ISO 4406 19/17/14. Regular oil analysis is recommended with filter change intervals adjusted based on contamination levels.
Operating Temperature Control: Ensure the hydraulic system operating oil temperature remains within the recommended range (30–60°C) to prevent viscosity reduction and seal degradation from excessive temperatures.
Regular Inspection Schedule: Regular inspection of the hydraulic system and pump is recommended. Check hydraulic fluid level daily and monitor operating temperature, noise levels, and case drain flow regularly. Abnormal increases may indicate internal wear or seal degradation.
