25VQ17A-1C20 Vickers VQ Vane Pump 210bar

Product Overview

Technical Specifications

• 20VQ Series: 20VQ5, 20VQ8, 20VQ11, 20VQ12, 20VQ14
• 25VQ Series: 25VQ12, 25VQ14, 25VQ17 (incl. 25VQ17A-1C20, 25VQ17A-11A20, 25VQ14A-1C20, etc.), 25VQ19, 25VQ21
• 35VQ Series: 35VQ25, 35VQ30, 35VQ35, 35VQ38
• 45VQ Series: 45VQ42, 45VQ50, 45VQ60

• 26VQ Series (Heavy-Duty Bearing Version of 20VQ)
• 36VQ Series (Heavy-Duty Bearing Version of 35VQ)
• 46VQ Series (Heavy-Duty Bearing Version of 45VQ)

• Product Type: Positive-Displacement Fixed Vane Pump
• Number of Vanes: 10 per cartridge
• Construction: Intra-Vane Modular Cartridge Design
• Hydraulic Balance: Diametrically opposed inlet/outlet chambers, eliminating radial hydraulic loading
• Rotation: Clockwise viewed from shaft end (R = Right)
• Mounting: SAE 4-Bolt Flange or Foot Mounting Options

• Displacement Range: 18.0 ~ 45.9 cc/rev (1.10 ~ 2.80 in³/rev)
• Continuous Pressure Rating: 207 bar (3,000 psi)
• Intermittent Peak Pressure: 228 bar (3,300 psi)
• Maximum Speed: 2,700 rpm
• Max Flow (@ Max Speed & Pressure): 42.3 ~ 115.4 L/min (11 ~ 30 US gpm)
• Max Input Power (@ Max Speed & Pressure): 17.9 ~ 29.1 kW (24 ~ 39 hp)
• Weight: Approx. 11.8 kg (26 lbs)

• Displacement Range: 40.2 ~ 67.5 cc/rev (2.45 ~ 4.12 in³/rev)
• Continuous Pressure Rating: 207 bar (3,000 psi)
• Intermittent Peak Pressure: 228 bar (3,300 psi)
• Maximum Speed: 2,500 ~ 2,700 rpm (varies by displacement)
• Max Flow (@ Max Speed & Pressure): 88.5 ~ 146.2 L/min (23 ~ 38 US gpm)
• Max Input Power (@ Max Speed & Pressure): 41.0 ~ 61.9 kW (55 ~ 83 hp)
• Weight: Approx. 14.5 kg (32 lbs)

• Displacement Range: 81.6 ~ 121.6 cc/rev (4.98 ~ 7.42 in³/rev)
• Continuous Pressure Rating: 207 bar (3,000 psi)
• Intermittent Peak Pressure: 228 bar (3,300 psi)
• Maximum Speed: 2,400 ~ 2,500 rpm (varies by displacement)
• Max Flow (@ Max Speed & Pressure): 173.1 ~ 250.0 L/min (45 ~ 65 US gpm)
• Max Input Power (@ Max Speed & Pressure): 75.3 ~ 104.4 kW (101 ~ 140 hp)
• Weight: Approx. 22.7 kg (50 lbs)

• Displacement Range: 138.7 ~ 193.4 cc/rev (8.46 ~ 11.80 in³/rev)
• Continuous Pressure Rating: 175 bar (2,500 psi)
• Intermittent Peak Pressure: 190 bar (2,750 psi)
• Maximum Speed: 2,200 rpm
• Max Flow (@ Max Speed & Pressure): 255.8 ~ 369.2 L/min (66.5 ~ 96 US gpm)
• Max Input Power (@ Max Speed & Pressure): 91.4 ~ 126.8 kW (122.5 ~ 170 hp)
• Weight: Approx. 34.1 kg (75 lbs)

• 25VQ = Series Frame Size
• 17 = Displacement Code (corresponds to 55.2 cc/rev, delivering 64.3 L/min ≈ 17 US gpm @ 1200 rpm / 7 bar)
• A = Port Connection (SAE 4-Bolt Flange)
• 1 = Shaft Type (Straight Key)
• C20 = Rotation & Design Number (C = Clockwise, 20 = Design Revision)

Key Technical Advantages

Application Areas

• Construction Equipment: Excavator auxiliary hydraulic systems, loader work implements, bulldozer ripper drives, and other medium-pressure mobile equipment
• Injection Molding Machines: Hydraulic power source for clamping, injection, and ejection mechanisms — wide speed range and low pulsation ensure molding precision
• Die Casting Machines: High clamping force with fast cycle rates — high volumetric efficiency minimizes oil temperature rise
• Hydraulic Presses: High-pressure power source for metal forming, stamping, and drawing operations
• Material Handling Equipment: Forklift lift and tilt systems, AGV drive systems
• Agricultural Machinery: Tractor hydraulic hitch systems, harvester drive systems
• Marine Deck Machinery: Capstans, windlasses, and cranes requiring reliable medium-pressure hydraulic drive
• Refuse & Municipal Vehicles: Garbage compactor and street sweeper hydraulic work systems

Expert Maintenance Tips

• Fluid Cleanliness Control: Maintain hydraulic oil cleanliness at ISO 4406 17/14/11 or better. The precision clearances between the intra-vanes and cam ring inner profile are critical — particulate contamination accelerates wear, causing volumetric efficiency loss and increased internal leakage. Install a 10 μm absolute filter on the return line.
• Viscosity & Temperature Management: Recommended fluid: anti-wear hydraulic oil with viscosity grade ISO VG 32–68 at 40°C (or automotive crankcase oil with SC/SD/SE/SF designation). At rated speed and pressure, recommended viscosity range is 13 cSt minimum to 54 cSt maximum (corresponding to oil temperatures of 49°C minimum to 65°C maximum). Continuous oil temperature must not exceed 99°C, or cartridge and seal life will be significantly reduced.
• Cold Start Precautions: When operating with SAE 10W oil in the 860 to 54 cSt viscosity range, speed and pressure must be limited to 50% of their respective ratings until the system is fully warmed up. When oil viscosity exceeds 860 cSt at startup, special care must be taken to ensure the entire system — including remote cylinders and motors — is thoroughly warmed before gradually applying load.
• Shaft Alignment: Pump-to-driver concentricity must be strictly controlled. A flexible coupling is strongly recommended to absorb misalignment and prevent bearing damage from bending moments or radial loads. Tighten flange mounting bolts in a diagonal pattern to ensure reliable face sealing.
• Suction Line Requirements: Inlet vacuum must be strictly controlled. Mount the pump as close to the reservoir as possible. All suction line connections and flanges must be airtight — air ingress causes cavitation, increased noise, and reservoir foaming.
• Seal Material Compatibility: Standard seals are suitable for mineral-based hydraulic oils. If the system operates with phosphate ester fire-resistant fluids, the F3-prefix model designation must be selected (e.g., F3-25VQ17A-1C20), which features Viton (FKM) seal material. Using standard NBR seals with phosphate ester fluids will cause seal swelling and catastrophic failure.
• Cartridge Replacement Interval: Inspect vane wear and cam ring inner profile condition every 5,000 operating hours. Replace the cartridge assembly when volumetric efficiency drops by more than 15% or noise levels increase noticeably. The modular cartridge design enables field replacement in 30–60 minutes without removing the pump from the system.

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