Vickers 25VQ 45V Series Vane Pump | 25VQ17A 25VQ14A 45V60A Rotary Cartridge Pump Replacement

Genlu Hydraulic proudly introduces our 25VQ and 45V Series (covering 12A, 14A, 17A, and 60A stator displacement capacities) high-performance intra-vane rotary pumps. This series is engineered as a seamless, high-value replacement for the classic Eaton Vickers VQ series (for mobile machinery) and V series (for industrial applications) vane pump platforms (such as 25VQ12A-11C-20, 25VQ-14A-1C-22R, 45V60A1C22R, etc.). Serving as the reliable fluid power benchmark for construction machinery and industrial moulding/casting systems, these pumps incorporate Vickers’ patented intra-vane design and hydraulically flexible floating side plates. Genlu guarantees 100% Drop-in Interchangeability across SAE mounting flanges, drive shafts, fluid ports, and internal Cartridge Kits compared to original Vickers units. Every vane pump setup undergoes rigorous 100% simulation testing under dynamic pressure profiles to certify maximum volumetric output and quiet operation.

Technical Specifications 

• Product Series: Eaton Vickers 25VQ / 45V Series Intra-Vane Pumps

• Key Model Configurations: 25VQ12A-11C-20, 25VQ-14A-1C-22R, 25VQ14A-1A-20, 45V60A1C22R

• Displacement Specifications:

  • 25VQ12A: 39.0 cc/rev (12 USgpm @ 1200 rpm)

  • 25VQ14A: 45.0 cc/rev (14 USgpm @ 1200 rpm)

  • 25VQ17A: 55.0 cc/rev (17 USgpm @ 1200 rpm)

  • 45V60A: 193.0 cc/rev (60 USgpm @ 1200 rpm)

• Max Operating Pressure: 25VQ Series up to 20.6 MPa (206 bar); 45V Series up to 17.2 MPa (172 bar)

• Operating Speed Range: 600 rpm to 2700 rpm (depending on fluid viscosity and specific frame size)

• Pump Configuration: Fixed displacement single vane pump design

• Drive Shaft Options: Code 1 (Straight Parallel Keyed Shaft) / Code 11 (High-Torque Splined Shaft)

• Direction of Rotation: R (Right Hand / Clockwise, viewed from shaft facet) / L (Left Hand, optional)

• Outlet Port Orientations: Code A / C (Standard SAE 4-bolt flange; outlet housing can be indexed at 90° intervals)

Key Technical Advantages:

• Patented Intra-Vane Wear Reduction Technology: The internal pilot passage design balances out the vane tip pressure against the stator ring inner contour. This reduces localized friction and thermal buildup under high-pressure spikes, exponentially increasing the fatigue lifecycle of the stator track.

• Hydraulically Floating Bimetallic Flex-Sideplates: Micro-finished with dual-metal cladding, the pressure plates automatically shift axially to compensate for running clearances as pressure scales. This structural flexibility boundaries internal bypass leakage, keeping volumetric efficiency above 95%.

• Independent Cartridge Kit Modular Architecture: The core stator, rotor, vanes, and side plates are integrated into a self-contained cartridge drop-in unit. Field servicing takes less than 10 minutes by dropping in a new cartridge kit without disconnecting lines from the vehicle chassis, slashing maintenance downtime.

• 12-Vane Low-Pulsation Acoustic Control: The rotor assembly embeds 12 intra-vanes to dramatically dampen fluid flow and pressure ripples during crossover timing. Combined with a rigid shock-absorbing cast iron outer housing, it keeps db(A) noise emission exceptionally low at full 200 bar loads.

Application Areas:

• Mobile Earthmoving & Construction: Dump truck hydraulic hoists, transit wheel scrapers, highway asphalt pavers, and utility truck crane auxiliary power systems.

• Industrial Manufacturing Fleet: Heavy plastics injection moulding machines, aluminum die-casting machines, waste metal shear balers, and hydraulic press brakes.

• Marine & Bulk Fluid Handling: Deck mooring winch drives, cargo crane power blocks, and large-capacity industrial oil lubrication systems.

Expert Maintenance Tips:

• Mandatory Pre-Priming & Jog-Start (Critical Protocol): Prior to initial commissioning after a pump or cartridge replacement, fill the housing completely with clean fluid through the outlet port. When starting the electric motor for the first time, utilize a “jogging” sequence (turn on for 1-2 seconds, then immediately cut power, repeating 2-3 times). Avoid direct continuous high-speed startup, which forces immediate dry scuffing before centrifugal forces engage the vanes.

• Observe Minimum Rotational Velocity: Intra-vane designs rely on centrifugal forces and vane-underside pilot oil to project the vanes outward against the cam ring. Operational velocity must never drop below 600 rpm. Operating beneath this threshold triggers erratic vane tracking, high slippage, and intense aeration.

• Strict Fluid Cleanliness & Anti-Cavitation Auditing: The VQ series tolerates zero harsh micro-particulate scoring. Suction plumbing joints must be fully airtight to prevent air intake. Maintain oil cleanliness profiles strictly at NAS Class 8 (ISO 19/16) or cleaner, inspecting the suction strainers every 500 operating hours.