20V-11A-1C-22L Vickers Eaton V Series Vane Pump 36.4cc 210bar

Product Overview

The 20V, 25VQ, 35V, 45V series and specific models such as 20V-11A-1C-22L, 20V-12A-1A-22R, 20V-14A-1D-22R, 20V-5A-1D-22R and 20V-8A-1A-22R belong to the Eaton Vickers (now Danfoss) V/VQ series of fixed-displacement vane pumps. The V series is designed for industrial use and the VQ series for mobile applications. Both feature the Intra-Vane balanced design that fully cancels radial forces for high volumetric efficiency, low noise and long life. We specialize in the R&D and manufacturing of high-pressure pumps, motors and valve blocks. Our products offer 100% drop-in interchangeability with genuine Vickers/Eaton units and undergo 100% simulated operating-condition testing. Precision machining and high-quality materials ensure stable flow output under industrial and mobile high-pressure conditions.

Technical Specifications

(Based on official Eaton Vickers engineering data; theoretical values excluding efficiency and tolerances)

• Series: 20V (industrial), 25VQ/35V/45V (related series)
• Typical models:
  • 20V-11A-1C-22L: Displacement approx. 36.4 cm³/r (2.22 in³/r), SAE rated approx. 11 USGPM @ 1200 r/min
  • 20V-12A-1A-22R: Displacement approx. 39–40 cm³/r
  • 20V-14A-1D-22R: Displacement approx. 45 cm³/r
  • 20V-5A-1D-22R: Displacement approx. 17–18 cm³/r
  • 20V-8A-1A-22R: Displacement approx. 27 cm³/r
• Continuous pressure: up to 210 bar (3000 psi) for smaller ring sizes; slightly lower for larger sizes
• Peak pressure: Higher intermittent values possible depending on ring size and fluid
• Maximum speed: 1800 r/min for 20V series; higher (2500–2700 r/min) for VQ series
• Control: Fixed displacement, Intra-Vane balanced design; rotation selectable (R = clockwise, L = counterclockwise)
• Mounting & ports: SAE B 2-bolt flange; A = SAE 4-bolt flange ports; Shaft 1 = keyed
• Port position: A = opposite, C = in-line, D = other orientations available
• Approximate weight: 11.8–12 kg for 20V series
• Other: Design 22 and subsequent compatible designs

Key Technical Advantages

1. Intra-Vane precision balanced design: Internal vane structure fully balances radial hydraulic forces, minimizing bearing loads for high volumetric efficiency and extended service life.
2. High volumetric efficiency and low-noise operation: Optimized vane-to-ring geometry reduces internal leakage, delivering smooth, quiet running suitable for industrial and mobile environments.
3. Long-life cartridge and easy maintenance: Cartridge design allows quick replacement without complete pump disassembly; high-quality materials and precision machining ensure excellent wear resistance.
4. 100% drop-in interchangeability and simulated-condition testing: Overall dimensions, mounting interfaces, shaft types, port positions and performance curves match genuine Vickers/Eaton units exactly for direct replacement. Every unit undergoes 100% simulated operating-condition testing to verify pressure, flow, efficiency and sealing performance.
5. Flexible configurations for engineering needs: Multiple displacements, shaft types, port orientations and rotations available for easy adaptation to diverse host machines.

Application Areas

• Industrial equipment: machine tools, injection molding machines, presses
• Construction machinery auxiliary circuits: wheel loaders, excavators
• Mobile equipment: agricultural machinery, special vehicles
• General hydraulic systems: fixed-displacement high-pressure oil supply applications

Expert Maintenance Tips

• Before installation, confirm rotation (R/L) and port position match the host machine. Ensure adequate suction line diameter and proper sealing to avoid cavitation.
• Use anti-wear hydraulic oil with cleanliness meeting ISO 4406 18/16/13 or better; maintain suitable viscosity at operating temperature. Run at low speed during cold starts.
• Keep inlet pressure within recommended limits; regularly check shaft seals and external drain condition.
• When replacing the cartridge, maintain strict cleanliness and correct assembly sequence; perform air bleeding and low-pressure test run afterward.
• Perform preventive inspections every 2000–4000 hours depending on duty cycle; monitor noise, temperature and any flow changes, and replace worn cartridges promptly.

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