25V17A-1A22R Vickers Fixed Vane Pump 55.6 ml/r 172 bar

Product Overview

The Vickers (now Danfoss Power Solutions) V Series and VQ Series are the industry benchmark for industrial hydraulic vane pumps, renowned for low noise, high pressure, long service life, and proven reliability. The V Series encompasses four sub-series—20V, 25V, 35V, and 45V—available in single, double, and thru-drive configurations. The VQ Series represents an enhanced version of the V Series, offering higher pressure ratings and expanded configuration options.

V Series & VQ Series Core Technical Features:

• Intra-Vane Design: Volumetric efficiencies exceeding 90% with sound levels as low as 62 dB(A)

• 12-Vane System: Low-amplitude flow pulsation resulting in low system noise characteristics

• Balanced-Type Hydraulic Design: Fully balanced radial hydraulic forces for extended bearing life

• Cartridge Construction: Pump cartridges can be replaced quickly and independently for easy maintenance

Our products are manufactured to be 100% interchangeable with Vickers/Danfoss original specifications—a true “drop-in” replacement solution. Every unit undergoes 100% full-load and flow-matching testing under simulated operating conditions before shipment, ensuring volumetric efficiency, flow rate, and noise performance meet or exceed original specifications at rated pressure.

Technical Specifications 

25V17A-1A22R

• Product Type: Fixed Displacement Single Vane Pump

• Brand: Vickers / Danfoss

• Series: 25V

• Displacement: 55.6 cm³/r (3.4 in³/rev)

• Rated Continuous Pressure: 172 bar (2500 psi)

• Maximum Speed: 1800 r/min

• Maximum Flow (@1200 rpm): 17 gal/min (approx. 64 L/min)

• Maximum Flow (@1800 rpm): 25.5 gal/min (approx. 96.5 L/min)

• Maximum Continuous Torque: 250 N·m

• Shaft Type: Straight Keyed, 0.875 in (22.22 mm) diameter

• Rotation: R = Clockwise (viewed from shaft end)

• Mounting Flange: SAE B 2-Bolt Flange

• Port Position: Outlet opposite inlet

• Inlet Port Size: 1-1/2 in SAE

• Outlet Port Size: 1 in Code 61 Flange

• Seal Material: Buna-N (Nitrile)

• Design Number: 22

• Net Weight: Approx. 14.5 kg (32.0 LB)

• Fluid Compatibility: Mineral oils or synthetic fire-resistant fluids

4535V-60A32-86CC22R

• Product Type: Double Fixed Displacement Vane Pump

• Brand: Vickers / Danfoss

• Series: 4535V (45V Housing + 35V Housing Double Combination)

• Section 1 Displacement (Front, 45V, Code 60): 193 ml/r

• Section 2 Displacement (Rear, 35V, Code 32): Approx. 121 ml/r

• Rated Continuous Pressure: 172 bar (2500 psi)

• Maximum Speed: 1800 r/min

• Maximum Flow: 60 gal/min (approx. 227 L/min)

• Maximum Continuous Torque: 820 N·m

• Shaft Type: Straight Keyed, 1.5 in

• Rotation: R = Clockwise (viewed from shaft end)

• Mounting Flange: SAE C 2-Bolt Flange

• Inlet Port Size: 4 in SAE

• Outlet Port Size: 1-1/2 in SAE

• Seal Material: Nitrile

• Net Weight: Approx. 56.7 kg (125.0 LB)

• Fluid Compatibility: Mineral oils or synthetic fire-resistant fluids

2520VQ21C1411CC20

• Product Type: Double Fixed Displacement Vane Pump

• Brand: Vickers / Danfoss

• Series: 2520VQ (25V Housing + 20V Housing Double Combination)

• Section 1 Displacement (Front, 25V, Code 21): 67 ml/r

• Section 2 Displacement (Rear, 20V, Code 14): Approx. 45 ml/r

• Total Displacement: Approx. 112 ml/r (67 + 45)

• Rated Continuous Pressure: 210 bar (21 MPa)

• Maximum Speed: 2500 r/min

• Maximum Flow (@1200 rpm, Shaft End): 21 gal/min

• Maximum Flow (@1800 rpm, Shaft End): 31.5 gal/min

• Mounting Flange: SAE B 2-Bolt Flange

• Shaft Type: 13-Tooth Splined (16/32), 7/8 in diameter

• Seal Material: Buna-N (Nitrile)

• Net Weight: Approx. 20.4 kg (45.0 LB)

• Fluid Compatibility: Mineral oils or synthetic fire-resistant fluids

Key Technical Advantages

1. Intra-Vane Design – High Volumetric Efficiency & Low Noise
The V and VQ Series feature innovative intra-vane design, delivering over 90% volumetric efficiency and sound levels as low as 62 dB(A). The 12-vane system provides low-amplitude flow pulsation resulting in low system noise characteristics. The intra-vane design maintains exceptionally high volumetric efficiency even under high-pressure conditions.

2. Balanced-Type Design – Extended Bearing Life
The V and VQ Series employ a balanced-type hydraulic design, fully balancing radial hydraulic forces and eliminating radial loads on the rotor. This dramatically reduces bearing stress, significantly extending bearing life and ensuring long-term stable operation under high-pressure conditions.

3. Cartridge Design for Rapid Maintenance
The V and VQ Series feature cartridge-type construction, allowing individual pump cartridges (cam ring, rotor, vanes, plates) to be replaced quickly and independently. On-site repairs or displacement changes can be completed in minutes without removing the entire pump from the system.

4. Double Pump Design – Single Power Source, Dual Circuits
The 4535V and 2520VQ double pumps provide a single power source capable of serving two separate hydraulic circuits, or providing greater volume through the combined delivery of both sections. Two pumps in a single housing result in a more compact, simple installation.

5. Wide Configuration Options for Application Flexibility
The V and VQ Series are available in single, double, and thru-drive configurations. Double pump combinations include 2520VQ, 3520VQ, 3525VQ, 4520VQ, 4525VQ, 4535VQ, and others. The extensive configuration options enable the series to adapt to diverse applications—from industrial equipment to mobile machinery.

6. 100% Drop-In Interchangeability – Zero Retrofit Cost
Manufactured to exact Vickers/Danfoss original specifications—mounting dimensions, port locations, and shaft configurations are identical to the original. No piping modifications or installation adapters are required for direct replacement.

Application Areas

• Injection Molding Machines: Providing stable, low-noise high-pressure hydraulic power

• Die-Casting Machinery: Pulse-free hydraulic power source for high-pressure metal forming

• CNC Machine Tools & Machining Centers: Smooth hydraulic power for precision numerical control systems

• Hydraulic Press Series: Four-column presses, shearing machines, bending machines, stamping presses

• Construction Equipment: Excavators, loaders, forklifts—multi-actuator hydraulic systems

• Industrial Power Units: Core power source for indoor hydraulic stations requiring quiet operation

• Marine & Offshore Equipment: 4535V Series double pumps suitable for ship industrial applications

Expert Maintenance Tips

1. Model Identification and Selection

• 25V17A-1A22R: 25V = Series, 17 = Flow code (17 gpm @ 1200 rpm), A = Intra-vane design, 1A = SAE B straight keyed shaft, 22 = Design number, R = Clockwise rotation.

• 4535V-60A32-86CC22R: 4535V = 45V + 35V double combination, 60 = Section 1 displacement code (193 ml/r), A32 = Section 2 displacement code (approx. 121 ml/r), 86CC = Mounting & port configuration, 22R = Design number + Clockwise rotation.

• 2520VQ21C1411CC20: 2520VQ = 25V + 20V double combination (VQ Series), 21 = Section 1 flow code (67 ml/r), C14 = Section 2 configuration, 11CC20 = Mounting & port configuration.

• Displacement Code Reference: 25V Series code 17 = 55.6 ml/r; 45V Series code 60 = 193 ml/r; 2520VQ Series code 21 = 67 ml/r.

2. Installation Precautions

• Verify pump rotation direction matches system requirements—R denotes clockwise, L denotes counter-clockwise (viewed from shaft end).

• Confirm shaft type matches—25V17A-1A22R uses SAE B straight keyed shaft (Ø22.22 mm); 4535V uses 1.5 in straight keyed shaft; 2520VQ uses 13-tooth splined shaft.

• Suction piping should be as short as possible, minimizing unnecessary restrictions.

• The pump housing must not bear piping loads; suction and discharge lines must have independent supports.

3. Pre-Startup Checklist

• Verify oil level in the reservoir is adequate and fluid type is correct (ISO VG32, VG46, or VG68 anti-wear hydraulic oil recommended).

• Confirm all piping connections are secure with no leakage.

• Prime the pump by filling the housing with oil before first startup to prevent dry running.

4. Fluid Management

• High-quality anti-wear hydraulic oil is recommended; maintain fluid cleanliness at NAS 9 or higher—contamination is the leading cause of premature vane pump failure.

• V and VQ Series are compatible with mineral oils or synthetic fire-resistant fluids.

• Regularly check oil temperature to ensure it does not exceed 98°C (210°F).

5. Scheduled Maintenance

• Replace hydraulic oil and filters every 2000 operating hours or annually.

• V and VQ Series feature cartridge-type construction—cartridges can be replaced independently without removing the entire pump.

• If flow drops or pressure becomes unstable, first inspect cartridge wear—replacing the cartridge kit restores performance.