Vickers 35VQ Series Vane Pump | 35VQ-38A 3525V 45V 25VQ | High Pressure Hydraulic Pump

The V/VQ Series intra-vane high-pressure pumps by Chengyuan Hydraulic are heavy-duty power components fully compatible with Vickers industrial standards. This range includes versatile models such as 35VQ-38A, 25VQ14A, 45V60A, and the double pump 3525V. We utilize the classic intra-vane design, enabling superior mechanical efficiency and reduced noise levels under high-pressure conditions. As an ideal OEM replacement, all components offer 100% original-place interchangeability. Every pump undergoes 100% simulated condition testing before leaving the factory, ensuring that pressure response and volumetric efficiency match OEM technical manual standards perfectly.

Technical Specifications :

• Core Models: 35VQ-30A, 35VQ-38A, 25VQ14A, 45V60A, 3525V

• Displacement (e.g., 35VQ-38A): $121\text{ cm}^3\text{/rev}$

• Rated Pressure: $21\text{ MPa (210 bar / 3000 psi)}$

• Max Speed (VQ Series): $2500\text{–}2700\text{ rpm}$

• Control Type: Fixed Displacement (Axially balanced)

• Rotation: Right Hand (R) / Left Hand (L)

• Mounting: SAE J744 Standard (2-bolt or 4-bolt flanges)

• Porting: SAE 4-bolt Flange connections

Key Technical Advantages:

• Intra-vane Pressure Reduction Technology: By reducing the pressure of the vane tips against the cam ring, this design significantly minimizes stator track wear. This allows the pump to maintain an extended service life at $21\text{ MPa}$ while effectively suppressing flow ripples.

• Interchangeable Cartridge Kit Design: The VQ series features independent cartridge assemblies, allowing for field maintenance without removing the entire pump from the machine. This “drop-in” design drastically reduces downtime and lowers total lifecycle maintenance costs.

• Radially Balanced Hydraulic Structure: The hydraulic radial loads on the rotor are internally balanced. This ensures that the drive shaft bearings carry minimal load, resulting in exceptional mechanical stability and ultra-low noise levels (typically below $70\text{ dB}$).

• Excellent Cold Start Performance: Optimized for mobile machinery, the specialized port plate design ensures rapid system pressure buildup across a wide range of oil temperatures, maintaining high volumetric efficiency ($\ge 94\%$).

Application Areas:

• Industrial Machinery: Plastic injection molding machines, heavy-duty die casting machines, and rubber machinery.

• Mobile Equipment: Scrapers, excavator steering systems, and auxiliary drives for road rollers.

• Material Handling: Port cranes and large-scale forklift power units.

Expert Maintenance Tips:

• Pre-start Priming: After installation, the pump housing must be filled with clean hydraulic oil through the outlet port. Use “jog” starts initially to prevent dry friction between the vanes and stator.

• Viscosity & Cleanliness Control: Recommended oils are ISO VG 46 or 68 anti-wear hydraulic fluids. Maintain cleanliness at ISO 19/17/14 or better. Vane pumps are sensitive to hard particles; always monitor the suction filters.

• Avoid Cavitation: Ensure the inlet line is perfectly sealed. Suction resistance should not exceed $0.2\text{ bar}$. Even minor air ingestion will lead to high-frequency cavitation noise and vane damage.