35V38A-11A-22R Vickers Eaton V Series Vane Pump 121cc 172bar

Product Overview

The 35V38A-11A-22R, 35V25A-86B22R, and related models belong to the Eaton Vickers (now Danfoss) V-Series high-pressure fixed-displacement vane pumps (20V/25V/35V/45V/50V series). Featuring the Intra-Vane balanced design, these pumps fully cancel radial hydraulic forces, delivering high volumetric efficiency, low noise, and long service 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 V-Series units and undergo 100% simulated operating-condition testing. Precision machining and high-quality materials ensure stable flow output under industrial high-pressure conditions, widely used in injection molding machines, machine tools, presses, and other equipment.

Technical Specifications 

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

• Series: 20V, 25V, 35V, 45V, 50V (industrial fixed-displacement vane pumps)
• Typical models:
  • 35V38A-11A-22R: Displacement 121 cm³/r (7.37 in³/r), nominal flow approx. 38 USGPM @ 1200 r/min
  • 35V25A-86B22R: Displacement 81 cm³/r (4.98 in³/r), nominal flow approx. 25 USGPM @ 1200 r/min
• Continuous pressure: 172 bar (2500 psi) with anti-wear hydraulic oil
• Peak pressure: Higher intermittent values possible depending on ring size and fluid
• Maximum speed: 1800 r/min
• Minimum recommended speed: approx. 600 r/min
• Control: Fixed displacement, Intra-Vane balanced design; rotation selectable at assembly (R = clockwise, L = counterclockwise)
• Mounting & ports: SAE C 2-bolt flange (common for 35V); A = SAE 4-bolt flange ports; Shaft 11 = splined, 86 = heavy-duty keyed, etc.
• Port position: A = opposite inlet, B/C/D = other orientations available
• Approximate weight: 22.7 kg for 35V series
• Other: Design 22 and subsequent compatible designs; low-noise Intra-Vane construction

Key Technical Advantages

1. Intra-Vane precision balanced design: Internal vane structure fully balances radial hydraulic forces, minimizing bearing loads and significantly extending service life while maintaining high volumetric efficiency.
2. High volumetric efficiency and low-noise operation: Optimized vane-to-ring geometry reduces internal leakage, delivering smooth, quiet running ideal for noise-sensitive industrial 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 and reliability.
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 seal materials available for easy adaptation to diverse machine layouts and hydraulic fluids.

Application Areas

• Injection molding and die-casting machines: Main and auxiliary circuit oil supply
• Machine tools and industrial equipment: Hydraulic power source for presses, bending machines, etc.
• Metallurgical and rubber/plastic machinery: High-pressure fixed-displacement flow requirements
• Construction machinery auxiliary systems: Stable flow output 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 the recommended range (typically 0–0.34 bar gauge); 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 reduction, and replace worn cartridges promptly.