VPVC-F15-A2-02 KCL Variable Vane Pump 15 cc/rev 70 bar

Product Overview

The VPVC, VPKC, and VPVCC Series, manufactured by KCL (Kai Jia, a renowned Taiwanese hydraulic brand), are low-pressure variable displacement vane pump product lines widely used in various industrial hydraulic systems requiring low noise and high efficiency.

The VPVC Series comprises single variable vane pumps available in F12, F15, F20, F30, F40, and other specifications. The series provides automatic flow adjustment and compensation function at set pressure, offering lower power loss and reduced heat generation compared to fixed displacement vane pumps—making it an energy-efficient, high-performance vane pump.

The VPKC Series is a single variable vane pump line featuring compact structure, smooth operation, and special design for high pressure and low noise. The series also features pressure compensation and automatic flow adjustment, particularly suitable for plastic injection molding machines, rubber machinery, packaging machinery, woodworking machinery, and various machine tools.

The VPVCC Series comprises double variable vane pumps integrating two VPVC series pump sections into one housing driven by a common shaft. In addition to sharing the characteristics of the VPVC single pump series, the VPVCC Series allows a single electric motor to drive the double pump, generating two different pressure flows for more flexible system design. The double pump is driven by one motor, reducing installation space, and is compatible with direct-coupled motors for easy assembly, simultaneously supplying pressure and flow for two different circuits.

Our products are manufactured to be 100% interchangeable with KCL original specifications—a true “drop-in” replacement solution. Every unit undergoes 100% full-load and flow-matching testing under simulated operating conditions before shipment, ensuring volumetric efficiency, flow rate, and noise performance meet or exceed original specifications at rated pressure.

Technical Specifications 

VPVC-F15-A2-02

• Product Type: Variable Displacement Vane Pump

• Brand: KCL (Kai Jia, Taiwan)

• Series: VPVC

• Geometric Displacement: 15 cc/rev

• Rated Continuous Pressure: 16 MPa (160 bar)

• Maximum Peak Pressure: 21 MPa (210 bar)

• Pressure Adjustment Range: A2 = 1.5 – 3.5 MPa

• Speed Range: 600 – 1800 r/min

• Mounting Type: F = Flange Mounting

• Design Number: 02

• Net Weight: Approx. 9.8 kg

• Fluid Compatibility: Petroleum-based hydraulic oil

• Recommended Viscosity: ISO VG32, VG46, or VG68 anti-wear hydraulic oil

VPVC-F20-A3-02

• Product Type: Variable Displacement Vane Pump

• Brand: KCL (Kai Jia, Taiwan)

• Series: VPVC

• Geometric Displacement: 20 cc/rev

• Rated Continuous Pressure: 16 MPa (160 bar)

• Maximum Peak Pressure: 21 MPa (210 bar)

• Pressure Adjustment Range: A3 = 3.0 – 7.0 MPa

• Maximum Set Pressure: 7.0 MPa

• Speed Range: 600 – 1800 r/min

• Mounting Type: F = Flange Mounting

• Design Number: 02

• Net Weight: Approx. 11.2 kg

• Fluid Compatibility: Petroleum-based hydraulic oil

• Recommended Viscosity: ISO VG32, VG46, or VG68 anti-wear hydraulic oil

VPVC-F30-A3-02

• Product Type: Variable Displacement Vane Pump

• Brand: KCL (Kai Jia, Taiwan)

• Series: VPVC

• Geometric Displacement: 30 cc/rev

• Rated Continuous Pressure: 16 MPa (160 bar)

• Maximum Peak Pressure: 21 MPa (210 bar)

• Pressure Adjustment Range: A3 = 3.0 – 7.0 MPa

• Maximum Set Pressure: 7.0 MPa

• Speed Range: 600 – 1800 r/min

• Mounting Type: F = Flange Mounting

• Design Number: 02

• Net Weight: Approx. 14.8 kg

• Fluid Compatibility: Petroleum-based hydraulic oil

• Recommended Viscosity: ISO VG32, VG46, or VG68 anti-wear hydraulic oil

VPVC-F-40-A1-02

• Product Type: Variable Displacement Vane Pump

• Brand: KCL (Kai Jia, Taiwan)

• Series: VPVC

• Geometric Displacement: 40 cc/rev

• Rated Continuous Pressure: 16 MPa (160 bar)

• Maximum Peak Pressure: 21 MPa (210 bar)

• Pressure Adjustment Range: A1 = 0.8 – 2.0 MPa

• Maximum Set Pressure: 2.0 MPa

• Speed Range: 600 – 1800 r/min

• Mounting Type: F = Flange Mounting

• Design Number: 02

• Net Weight: Approx. 9 kg

• Fluid Compatibility: Petroleum-based hydraulic oil

• Recommended Viscosity: ISO VG32, VG46, or VG68 anti-wear hydraulic oil

VPKC-F12A2-01

• Product Type: Variable Displacement Vane Pump

• Brand: KCL (Kai Jia, Taiwan)

• Series: VPKC

• Geometric Displacement: 12 cc/rev

• Rated Continuous Pressure: 16 MPa (160 bar)

• Maximum Peak Pressure: 21 MPa (210 bar)

• Pressure Adjustment Range: A2 = 1.5 – 3.5 MPa

• Speed Range: 600 – 1800 r/min

• Rotation: Clockwise (standard)

• Mounting Type: Flange Mounting

• Design Number: 01

• Net Weight: Approx. 8.6 kg

• Fluid Compatibility: Petroleum-based hydraulic oil

• Recommended Viscosity: 20 – 200 cSt

• Operating Temperature: 15°C – 60°C recommended

Key Technical Advantages

1. Variable Energy-Saving Design – Significantly Reduced Power Loss
The VPVC/VPKC/VPVCC Series features a variable vane pump design that automatically adjusts flow and provides compensation at set pressure. Compared to fixed displacement vane pumps, these pumps offer lower power loss, reduced heat generation, and superior energy efficiency.

2. Built-in Pressure Compensator – No External Relief Valve Required
The series features a built-in pressure adjustment mechanism, eliminating the need for a separate relief valve in the system. The built-in compensator automatically adjusts pump delivery to meet system volume requirements at selected pressures.

3. Low Noise and Stable Flow Output
The VPVC/VPKC/VPVCC Series is specially designed for low noise, providing smooth and quiet operation. The low-noise and stable flow output characteristics make them widely used in machine tools, injection molding machines, die-casting machines, and construction machinery.

4. Double Pump Design – Single Power Source, Dual-Circuit Independent Control
The VPVCC Series integrates two pump sections into one housing driven by a single shaft. This design allows a single motor to simultaneously serve two independent hydraulic circuits, generating two different pressure flows. The double pump is driven by one motor, reducing installation space, and is compatible with direct-coupled motors for easy assembly.

5. Wide Pressure Adjustment Range for Flexible Adaptation
The VPVC/VPKC Series offers multiple pressure adjustment ranges—A1 (0.8–2.0 MPa), A2 (1.5–3.5 MPa), and A3 (3.0–7.0 MPa). Users can flexibly select based on actual system pressure requirements.

6. Simple Internal Structure – Easy Disassembly and Repair
The VPKC Series features simple internal assembly, easy disassembly and repair, and convenient rotation direction changes. Rapid maintenance significantly reduces downtime.

7. 100% Drop-In Interchangeability – Zero Retrofit Cost
Manufactured to exact KCL original specifications—mounting dimensions, port locations, and shaft configurations are identical to the original. No piping modifications or installation adapters are required for direct replacement.

Application Areas

• Injection Molding Machines: VPKC Series particularly suitable for plastic injection molding machines

• Rubber Machinery: Foaming machines, flat vulcanization presses, etc.

• Packaging Machinery: Hydraulic systems for various packaging equipment

• Woodworking Machinery: Cutting machines, etc.

• CNC Machine Tools & Machining Centers: Smooth hydraulic power for precision numerical control systems

• Die-Casting Machinery: Hydraulic systems for die-casting machines

• Hydraulic Presses: Hydraulic power for various stamping and pressing equipment

• Small Hydraulic Power Units: Indoor hydraulic stations requiring energy-efficient operation

• Dual-Circuit Systems: VPVCC double pumps ideally suited for equipment requiring simultaneous operation of two independent hydraulic circuits

Expert Maintenance Tips

1. Model Identification and Selection

• VPVC Series: Single variable vane pump. In model VPVC-F20-A3-02: F20 = 20 cc/rev displacement, A3 = 3.0–7.0 MPa pressure range, 02 = Design number.

• VPKC Series: Single variable vane pump. In model VPKC-F12A2-01: F12 = 12 cc/rev displacement, A2 = 1.5–3.5 MPa pressure range, 01 = Design number.

• VPVCC Series: Double variable vane pump, combining two VPVC series pumps.

• Pressure Code Reference: A1 = 0.8–2.0 MPa, A2 = 1.5–3.5 MPa, A3 = 3.0–7.0 MPa.

2. Installation Precautions

• Verify pump rotation direction matches system requirements—standard is clockwise (viewed from shaft end).

• Ensure proper alignment between pump shaft and drive shaft; use flexible coupling.

• Mounting base must be sturdy to avoid vibration.

• Suction piping should be as short as possible, minimizing unnecessary restrictions.

• The pump housing must not bear piping loads; suction and discharge lines must have independent supports.

3. Pre-Startup Checklist

• Fill the pump housing with clean hydraulic oil; jog the motor to purge air.

• Ensure suction line is unobstructed and leak-free.

• Confirm fluid type is correct (ISO VG32, VG46, or VG68 anti-wear hydraulic oil recommended).

• Never operate dry—this will immediately damage internal components.

4. Fluid Management

• Mineral-based hydraulic oil with viscosity range 20–200 cSt is recommended.

• Fluid cleanliness is critical—maintain at NAS 9 or higher; install adequate filtration at the inlet.

• Regularly check oil level, oil quality, and filters.

• Recommended operating temperature: 15°C–60°C.

• The drain line must be routed separately back to the reservoir and kept unobstructed; back pressure must not exceed 0.3 MPa.

5. Scheduled Maintenance

• Replace hydraulic oil and filters every 2000 operating hours or annually.

• When replacing oil, thoroughly clean the system.

• VPVC/VPKC/VPVCC Series feature cartridge-type construction—cartridges can be replaced independently.

• For long-term storage, fill with rust-preventive oil and seal all ports.

• If flow drops or pressure becomes unstable, first inspect cartridge wear and variable mechanism condition.

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