VPKC-FC30XW-A4-1 Hydraulic Variable Vane Pump 70 Bar

Product Overview

The VPKC-FC30XW-A4-1 variable displacement hydraulic single vane pump (part of the VPKC series including VPKC-F20/F40/F45/FC30 with A1/A2/A3/A4 pressure ranges) is designed for medium-to-low pressure industrial hydraulic systems. Built strictly to original OEM engineering standards, this pump guarantees 100% direct drop-in interchangeability. Serving as an essential hydraulic power source for CNC machine tools, hydraulic power units (HPUs), and automated manufacturing machinery, every unit undergoes 100% factory bench testing under simulated pressure compensation and flow variation to ensure low noise, minimal thermal accumulation, and long service life.

Technical Specifications

• Part Number: VPKC-FC30XW-A4-1 (Series coverage: VPKC-F20/F40/F45-A1/A2/A3/A4)

• Pump Type: Variable Displacement Single Vane Pump

• Nominal Displacement: Approx. 30 cm³/rev

• Pressure Adjustment Range (A4 Level): 5.0 – 7.0 MPa (50 – 70 bar / 725 – 1015 psi)

• Maximum Operating Pressure: 7.0 MPa (70 bar / 1015 psi)

• Rated Speed Range: 800 – 1800 rpm

• Control Type: Direct-Operated Pressure Compensator Control

• Rotation Direction: Clockwise (CW, viewed from shaft end)

• Net Weight: Approx. 9.5 kg

Key Technical Advantages

• 100% Direct Drop-in Interchangeability: Mounting flanges, shaft dimensions, and oil port threads conform strictly to standard industrial specs, allowing hassle-free replacement without mechanical modifications.

• Energy-Efficient Pressure Compensation: Features an integrated high-response pressure compensator. When system pressure reaches the preset target, the stator shifts automatically to near-zero displacement, cutting fluid relief loss and keeping heat buildup minimal.

• Ultra-Quiet Operation: Engineered with an optimized stator profile and precision-ground vanes, effectively smoothing flow pulsations and keeping noise levels extremely low under full pressure loading.

• Hardened Stator & Vane Construction: Stator and vanes are manufactured from high-grade alloy steel with advanced heat treatment, offering anti-wear capability and protection against internal galling.

Application Areas

• Machine Tools & Metalworking: Main hydraulic power units for CNC lathes, milling machines, hydraulic clamping fixtures, and dedicated machine tools.

• Factory Automation Machinery: Light industrial hydraulic systems, shoemaking machinery, plastic processing equipment, and stationary hydraulic power packs.

Expert Maintenance Tips

• Initial Priming: Pour clean hydraulic oil into the suction port and rotate the pump coupling manually before starting the engine to prevent dry friction damage to the internal vanes.

• Pressure Adjustment Protocol: When setting system pressure, turn the compensator adjusting screw gradually clockwise. Do not force the screw past the maximum rated cutoff pressure for the A4 series (70 bar).

• Fluid Filtration & Viscosity: Use ISO VG32 or VG46 anti-wear hydraulic oil and maintain filtration cleanliness to 25 µm or cleaner to avoid particle-induced stator jamming.