HPP-VB2V-L8A5 HPP-VB2V-F8A3 JTEKT Toyooki Variable Piston Pump 8cc

JTEKT (formerly TOYOOKI) HPP-VB2V Series Swashplate Variable Displacement Piston Pump

Product Overview

The HPP-VB2V series is a swashplate-type variable displacement piston pump manufactured by JTEKT Corporation (formerly TOYOOKI Kogyo Co., Ltd. ) in Japan. Featuring pressure-compensated variable control, the series delivers 8 cc/rev displacement at a 14 MPa rated pressure, renowned for low noise, high efficiency, and rapid response. Manufactured to Japanese Industrial Standards (JIS), the HPP-VB2V series offers excellent interchangeability with equivalent models from other major international brands.

The HPP-VB2V series is available in side port (L-type) and axial port (EE-type) configurations, with flange mounting (F-type) and foot mounting (L-type) options. Pressure adjustment ranges include A3 (1–7 MPa) and A5 (3–14 MPa) to suit diverse system requirements. Every unit undergoes rigorous performance testing prior to shipment, ensuring reliability and durability under real-world operating conditions.

Technical Specifications 

HPP-VB2V-L8A3 / L8A3-EE (Side Port / Axial Port, Foot Mount, Low-Pressure Range)

• Model Code: HPP-VB2V-L8A3 / HPP-VB2V-L8A3-EE

• Displacement: 8.0 cc/rev

• Rated Pressure: 14 MPa

• Pressure Adjustment Range: 1–7 MPa

• Rated Speed: 1,800 min⁻¹

• Maximum Speed: 2,500 min⁻¹

• Mounting Method: Foot mounting (L-type)

• Porting Method: Side port (standard) / Axial port (EE-type)

• Fluid Type: Petroleum-based hydraulic oil

• Discharge Port: Rc1/2

• Minimum Discharge Rate Setting: 4 L/min or more (regardless of speed)

• Allowable Drain Back Pressure: 0.03 MPa or less

HPP-VB2V-L8A5 / L8A5-EE (Side Port / Axial Port, Foot Mount, High-Pressure Range)

• Model Code: HPP-VB2V-L8A5 / HPP-VB2V-L8A5-EE

• Displacement: 8.0 cc/rev

• Rated Pressure: 14 MPa

• Pressure Adjustment Range: 3–14 MPa

• Rated Speed: 1,800 min⁻¹

• Maximum Speed: 2,500 min⁻¹

• Mounting Method: Foot mounting (L-type)

• Porting Method: Side port (standard) / Axial port (EE-type)

• Fluid Type: Petroleum-based hydraulic oil

• Discharge Port: Rc1/2

• Minimum Discharge Rate Setting: 4 L/min or more (regardless of speed)

• Allowable Drain Back Pressure: 0.03 MPa or less

HPP-VB2V-F8A3 / F8A3-EE (Flange Mount, Low-Pressure Range)

• Model Code: HPP-VB2V-F8A3 / HPP-VB2V-F8A3-EE

• Displacement: 8.0 cc/rev

• Rated Pressure: 14 MPa

• Pressure Adjustment Range: 1–7 MPa

• Rated Speed: 1,800 min⁻¹

• Maximum Speed: 2,500 min⁻¹

• Mounting Method: Flange mounting (F-type)

• Porting Method: Side port (standard) / Axial port (EE-type)

• Fluid Type: Petroleum-based hydraulic oil

• Discharge Port: Rc1/2

HPP-VB2V-F8A5 / F8A5-EE (Flange Mount, High-Pressure Range)

• Model Code: HPP-VB2V-F8A5 / HPP-VB2V-F8A5-EE

• Displacement: 8.0 cc/rev

• Rated Pressure: 14 MPa

• Pressure Adjustment Range: 3–14 MPa

• Rated Speed: 1,800 min⁻¹

• Maximum Speed: 2,500 min⁻¹

• Mounting Method: Flange mounting (F-type)

• Porting Method: Side port (standard) / Axial port (EE-type)

• Fluid Type: Petroleum-based hydraulic oil

• Discharge Port: Rc1/2

Key Technical Advantages

1. Industry-Leading Low Noise Performance

The optimized swashplate variable mechanism and precision-engineered piston/cylinder assembly deliver low-noise operation across the entire pressure range. At 14 MPa, measured 1 meter from the pump operating at 1,200 min⁻¹, noise levels are 53 dB(A) at cutoff and 58 dB(A) before cutoff. This noise performance is among the best in its class, making it ideal for noise-sensitive indoor industrial environments.

2. Exceptional Efficiency and Energy Savings

Volumetric efficiency reaches 95%, with total efficiency of 90% (at 13.5 MPa, 1,800 min⁻¹). High efficiency translates to lower power loss, reduced oil temperature rise, and the ability to use smaller oil reservoirs. For long-running industrial equipment, the cumulative energy savings significantly reduce operating costs.

3. Ultra-Fast Pressure Response

The high-response pressure-compensated control mechanism delivers a response time of 0.06 seconds from 14 MPa cutoff to 13.5 MPa, and 0.03 seconds from 13.5 MPa to 14 MPa cutoff. This ultra-fast response ensures rapid system stabilization under sudden load changes, enhancing both precision and safety.

4. Flexible Mounting and Porting Options

Available in both foot mounting (L) and flange mounting (F) configurations, with side port (standard) and axial port (EE) options. This extensive range of combinations accommodates diverse spatial layouts and piping requirements. Port directions can be flexibly oriented, greatly simplifying system integration and maintenance.

5. Comprehensive Pressure Adjustment Range Coverage

A3 type provides 1–7 MPa low-pressure adjustment, while A5 type delivers 3–14 MPa high-pressure adjustment. Users can select the optimal pressure range based on system operating requirements for precise pressure control.

Application Areas

• Injection molding machines – core hydraulic power source providing stable, adjustable flow and pressure output

• Construction machinery – auxiliary hydraulic systems for excavators, loaders, and mobile equipment

• Machine tool hydraulics – clamping and feed systems for CNC and machining centers

• Presses and stamping equipment – forming machinery requiring rapid response and precise pressure control

• Marine hydraulic systems – deck machinery, steering gear, and other marine applications

• Industrial automation – precision hydraulic control for automated production lines

Expert Maintenance Tips

1. Rotation Direction Verification: Viewed from the shaft end, the HPP-VB2V series rotates clockwise (right-hand) . Confirm the pump rotation direction matches the drive motor before installation. Reverse rotation swaps suction and pressure ports, potentially causing pump damage.

2. Minimum Discharge Rate Setting: Regardless of operating speed, set the minimum discharge rate to 4 L/min or more. Insufficient minimum flow may lead to inadequate lubrication, accelerating piston and cylinder wear.

3. Drain Back Pressure Control: Allowable drain back pressure must be maintained at 0.03 MPa or less. Excessive back pressure raises internal casing pressure, which may damage shaft seals and interfere with variable mechanism operation.

4. Check Valve Selection on Discharge Side: If installing a check valve on the pump discharge side, use a valve with an opening pressure of 0.005 MPa. Higher opening pressures increase system back pressure and degrade variable response characteristics.

5. Fluid Cleanliness Management: Install an in-line filter with 10–20 μm filtration rating. Piston pumps are highly sensitive to fluid contamination. Maintaining fluid cleanliness to ISO 4406 18/16/13 or better is essential for maximizing service life.

6. Regular Inspection and Maintenance: Inspect pump operating sound every 3,000 operating hours. If actuator speed decreases or system pressure becomes abnormal, promptly inspect the pump cartridge assembly and charge pump condition.