5VQ 35VQ 45VQ Vickers Vane Pump 210Bar 2500RPM

Model Number	45VQ60A-1A20, 25VQ14A-1B20R, 35VQ-30A-1C-20, 35V-35A-1C-22R, 35VQ-38A-1C-22R

Product Description

Product Overview

The 25VQ, 35VQ, and 45VQ series are high-performance intravane fixed-displacement vane pumps originally developed by Vickers (now part of Eaton/Danfoss), engineered for medium-to-high pressure mobile and industrial hydraulic systems. These pumps deliver continuous operating pressures up to 210 bar (3,000 psi) with displacements ranging from 40.2 to 193.4 cm³/r, combining maximum power density in a compact envelope with exceptional volumetric efficiency and industry-leading low noise characteristics.

Our replacement pumps are 100% dimensionally and functionally interchangeable with genuine Eaton Vickers VQ-series pumps. Every internal component — including cartridge kits, drive shafts, shaft seals, bearings, and O-rings — is fully replaceable with original Vickers parts. All pumps undergo 100% simulated working-condition testing prior to shipment, guaranteeing that flow and pressure performance meets or exceeds OEM specifications, while offering significant cost savings compared to original equipment.

Technical Specifications (Bulleted List)

35VQ-38A-1C-22R

Series: 35VQ (VQ-Series High-Pressure Mobile/Industrial Vane Pump)
Displacement: 121.6 cm³/r (7.42 in³/r)
Rated Continuous Pressure: 210 bar (3,000 psi)
Peak Pressure: 228 bar (3,300 psi)
Maximum Speed: 2,400 rpm
Typical Flow (@ max speed & pressure): 250.0 L/min (65 US gpm)
Typical Input Power (@ max speed & pressure): 104.4 kW (140 hp)
Port Connection: A — SAE 4-Bolt Flange
Mounting: Flange Mount (standard)
Shaft Type: 1 — Straight Keyed Shaft
Outlet Position: C — Inline with Inlet
Design Number: 22
Rotation: R — Clockwise (viewed from shaft end)
Weight: 22.7 kg (50 lb)

35V-35A-1C-22R

Series: 35V (V-Series Low-Noise Industrial Vane Pump)
Displacement: 112.8 cm³/r (6.88 in³/r)
Rated Continuous Pressure: 210 bar (3,000 psi)
Peak Pressure: 228 bar (3,300 psi)
Maximum Speed: 2,400 rpm
Typical Flow (@ max speed & pressure): 230.8 L/min (60 US gpm)
Typical Input Power (@ max speed & pressure): 98.5 kW (132 hp)
Port Connection: A — SAE 4-Bolt Flange
Mounting: Flange Mount
Shaft Type: 1 — Straight Keyed Shaft
Outlet Position: C — Inline with Inlet
Design Number: 22
Rotation: R — Clockwise
Weight: 22.7 kg (50 lb)

35VQ-30A-1C-20

Series: 35VQ
Displacement: 97.7 cm³/r (5.96 in³/r)
Rated Continuous Pressure: 210 bar (3,000 psi)
Peak Pressure: 228 bar (3,300 psi)
Maximum Speed: 2,500 rpm
Typical Flow (@ max speed & pressure): 211.5 L/min (55 US gpm)
Typical Input Power (@ max speed & pressure): 87.7 kW (117.5 hp)
Port Connection: A — SAE 4-Bolt Flange
Mounting: Flange Mount
Shaft Type: 1 — Straight Keyed Shaft
Outlet Position: C — Inline with Inlet
Design Number: 20
Rotation: R — Clockwise
Weight: 22.7 kg (50 lb)

25VQ-14A-1B-20R

Series: 25VQ
Displacement: 45.4 cm³/r (2.77 in³/r)
Rated Continuous Pressure: 210 bar (3,000 psi)
Peak Pressure: 228 bar (3,300 psi)
Maximum Speed: 2,700 rpm
Typical Flow (@ max speed & pressure): 103.8 L/min (27 US gpm)
Typical Input Power (@ max speed & pressure): 46.6 kW (62.5 hp)
Port Connection: A — SAE 4-Bolt Flange
Mounting: Flange Mount
Shaft Type: 1 — Straight Keyed Shaft
Outlet Position: B — 90° CCW from Inlet
Design Number: 20
Rotation: R — Clockwise
Weight: 14.5 kg (32 lb)

45VQ-60A-1A-20

Series: 45VQ
Displacement: 193.4 cm³/r (11.80 in³/r)
Rated Continuous Pressure: 175 bar (2,500 psi)
Peak Pressure: 190 bar (2,750 psi)
Maximum Speed: 2,200 rpm
Typical Flow (@ max speed & pressure): 369.2 L/min (96 US gpm)
Typical Input Power (@ max speed & pressure): 126.8 kW (170 hp)
Port Connection: A — SAE 4-Bolt Flange
Mounting: Flange Mount
Shaft Type: 1 — Straight Keyed Shaft
Outlet Position: A — Opposite Inlet
Design Number: 20
Rotation: R — Clockwise
Weight: 34.1 kg (75 lb)

Model Designation Decoder

Using 35VQ-38A-1C-22R as an example:

35VQ — Series Code (35 = Frame Size; VQ = High-Pressure Mobile/Industrial Type)
38 — Displacement Code (corresponds to 121.6 cm³/r)
A — Port Connection (A = SAE 4-Bolt Flange)
1 — Shaft Extension (1 = Straight Keyed; 86 = Heavy-Duty Straight Keyed; 11 = Splined)
C — Outlet Port Position (A = Opposite Inlet; B = 90° CCW; C = Inline; D = 90° CW)
22 — Design Number
R — Rotation (R = Clockwise; L = Counter-Clockwise)

Key Technical Advantages

Intravane Hydraulic Balancing Architecture

The VQ series employs a patented intravane design where each main vane incorporates a pressure-balanced sub-vane chamber beneath it. System pressure is intelligently directed to push the vane tip against the cam ring with precisely controlled force — eliminating the excessive contact loading inherent in conventional spring-loaded vane designs. This hydraulic balancing reduces stator wear by over 40%, enabling reliable operation at 210 bar continuous pressure with service life exceeding 10 million pressure cycles.

High Volumetric Efficiency with Floating Side Plate Technology

The flex plates (side plates) are precision-tooled from specially hardened bi-metallic material that provides exceptional seizure resistance. A floating structure automatically compensates for end-face clearance as operating pressure increases, maintaining tight sealing contact between the rotor assembly and side plates. This self-adjusting mechanism ensures volumetric efficiency consistently above 90% across the full pressure range — translating to higher effective flow output, reduced internal leakage, and lower energy consumption.

12-Vane Low Pulsation System

The VQ series utilizes a 12-vane configuration (10 vanes on smaller frames), where the vane count is a multiple of four — mathematically minimizing flow pulsation amplitude. Combined with precision-ground cam ring transition curves, the system achieves noise levels as low as 62 dB(A) at rated conditions. This represents a significant acoustic advantage over comparable gear pumps and piston pumps, ensuring operator comfort and compliance with stringent industrial noise regulations such as EU Machinery Directive 2006/42/EC.

Independent Cartridge Serviceability

The complete pump cartridge assembly — comprising rotor, vanes, cam ring, and flex plates — is a self-contained module independent of the drive shaft and pump body. Maintenance requires only removal of four hex bolts on the front cover to extract the entire cartridge for replacement, without disconnecting any hydraulic lines or removing the pump from its mounting. This design reduces typical maintenance downtime to under 30 minutes. All cartridge components are fully interchangeable with genuine Vickers parts.

CNC Precision Manufacturing & Full Inspection Protocol

Cam rings are manufactured using state-of-the-art CNC milling, turning, and precision grinding centers, achieving surface finish of Ra ≤ 0.2 μm on the critical sealing surfaces. Every rotor slot and vane dimension is individually verified using precision gauging equipment. The pump body is cast from high-grade gray iron (GG25 equivalent) and stress-relieved to ensure long-term dimensional stability under thermal and mechanical loading.

Application Areas

Plastic Injection Molding Machines — Clamping unit hold-pressure, carriage movement, ejector systems; 35VQ/45VQ large-displacement models deliver stable high-pressure, high-flow output for short cycle times
Die Casting Machines — Shot-end intensification, toggle clamp locking, die opening/closing; VQ pumps withstand high-pressure impulse loading with excellent shock resistance
Metal Cutting Machine Tools — Hydraulic workholding, tool changer actuation, feed drives; low pulsation characteristics ensure superior workpiece surface finish quality
Metallurgical Equipment — Rolling mill screw-down systems, continuous caster mold oscillation, ladle turret rotation
Mobile Construction Equipment — Excavator auxiliary circuits, loader work implements, crane outrigger extension/retraction
Rubber Processing Machinery — Internal mixer ram pressure, vulcanizing press closing, extruder feed systems
Mining Machinery — Hydraulic roof support control, drill rig feed, breaker hammer drive
Marine & Port Machinery — Deck cranes, mooring winches, steering gear systems

Expert Maintenance Tips

Installation Best Practices

Fluid Cleanliness: System fluid cleanliness must meet ISO 4406 18/16/13 (NAS 8) or better. Install a 25 μm suction strainer and a 10 μm return-line filter. Each ISO cleanliness class improvement can extend pump life by over 30%.
Fluid Viscosity: Recommended operating viscosity is 17–37 mm²/s (ISO VG 32 or VG 46 anti-wear hydraulic oil). Cold start oil temperature must be above 10°C (50°F) to prevent vane sticking in rotor slots during startup.
Suction Conditions: Maximum suction lift (tank level to pump inlet) must not exceed 500 mm (20 in). Suction line length ≤ 2 m with ≤ 2 bends; internal flow velocity ≤ 1.5 m/s to prevent cavitation.
Shaft Alignment: When using a coupling drive, only flexible couplings (jaw-type or elastomeric) are permitted. Concentricity deviation must be ≤ 0.1 mm (0.004 in) and face runout ≤ 0.05 mm (0.002 in). Rigid couplings are strictly prohibited as they induce shaft bending and premature bearing failure.

Commissioning & Operation

Initial Start-Up Bleeding: Before first operation or after prolonged shutdown, loosen the outlet port fitting and jog the motor (2–3 seconds ON, 5 seconds OFF) until a continuous, bubble-free oil stream emerges from the outlet. Retighten the fitting before entering normal operation. Never start the pump under full system pressure without bleeding.
Temperature Monitoring: Maintain oil temperature between 30–60°C (86–140°F) during continuous operation; maximum 70°C (158°F). Excessive temperature accelerates seal degradation and oil oxidation.
Noise Diagnostics: High-frequency whining typically indicates suction line air ingress or filter blockage (cavitation). Low-frequency knocking suggests bearing wear or vane sticking — inspect immediately.

Scheduled Maintenance

Cartridge Replacement Interval: Under recommended operating conditions, replace the cartridge assembly every 8,000–10,000 operating hours, or when volumetric efficiency drops by more than 15%. Thanks to the cartridge design, replacement requires only loosening 4 hex bolts on the front cover — no pump removal or line disconnection needed.
Seal Replacement: O-rings and shaft seals should be replaced at every cartridge service interval to prevent aging-related leakage. Standard seal material is Nitrile (NBR); for phosphate ester fluids (HFD), select Fluoroelastomer (F3-designated) seals.
Bearing Inspection: Check bearing clearance every 5,000 hours. If axial play exceeds 0.05 mm (0.002 in) or abnormal temperature rise is detected, replace the bearing assembly immediately.

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20VQ5A-1A30
20VQ5A-1A30L
20VQ5A-1C30
20VQ8A-1A30
20VQ8A-1C30
20VQ9A-1C30
20VQ11A-1A30
20VQ11A-1C30
20VQ14A-1C30
25VQ12A-11A20
25VQ12A-1B20
25VQ14A-11A20
25VQ14A-11C20
25VQ14A-1A20
25VQ14A-1A20L
25VQ14A-1C20
25VQ17A-11A20
25VQ17A-11A20L
25VQ17A-11C20
25VQ17A-1A20
25VQ17A-1A20L
25VQ17A-1C20
25VQ21A-11A20
25VQ21A-11C20
25VQ21A-1A20
25VQ21A-1A20L
25VQ21A-1C20
35VQ25A-11A20
35VQ25A-11C20L
35VQ25A-1A20
35VQ25A-1C20
35VQ30A-11A20
35VQ30A-11C20
35VQ30A-1A20
35VQ30A-1C20
35VQ30A-86A20
35VQ35A-11C20
35VQ35A-1A20
35VQ35A-1A20L
35VQ35A-1C20
35VQ35A-86A20
35VQ38A-11C20
35VQ38A-1A20
35VQ38A-1C20
35VQ38A-86A20
45VQ42A-1C20
45VQ42A-86A20
45VQ42A-86C20
45VQ50A-1A20
45VQ50A-1C20
45VQ50A-86A20
45VQ50A-86C20
45VQ60A-11C20
45VQ60A-1A20
45VQ60A-1C20
45VQ60A-1D20
45VQ60A-86C20
45VQH42A-86C20
35VQ35A11C20
25VQ21A1A20
25VQ21A1A20L
25VQ21A1B20
25VQ21A1C20
25VQ21A1C20L
25VQ21A1D20L
45VQ60A86A20
45VQ60A86C20
45VQ60A86C20L
35VQ38A86A20
35VQ30A86A20
35VQ30A86C20
35VQ25A86A20
35VQ35AB11L20
35VQ35A11C20
35VQ35A11D20L
26VQ21A3C20
26VQ21A3C20L
30VQ28A1A20
30VQ28A1A20L
30VQ28A1C20