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25VQ Series Vane Pump, 19 Ring Size, 7/8 Straight Keyed Shaft, Outlet in-Line with Outlet, CW Rotation

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Description & Features

Rated for up to 3,000 PSI and 2,500 RPM, the Eaton Vickers 25VQ Series Vane Pump is built for demanding high-pressure, high-speed hydraulic applications. With a ring size of 19 and a rated flow of 28.5 GPM, this single vane pump delivers outstanding volumetric efficiency and extended service life across a range of industrial uses, including metal cutting, plastic injection molding, dump truck, and wheel loader systems.

The pump features a 7/8 straight keyed shaft with clockwise rotation, and the outlet port is in-line with the inlet. Mounting is via a 2-bolt SAE B flange, with SAE 4-bolt flange ports sized at 1-1/2" inlet and 1" outlet. Displacement is 3.74 in³/rev. This unit is supplied by Danfoss Power Solutions under catalog number C1MF51.

SKU: 578308-3

Supplier Part Number (MPN): 578308-3

Specifications

Brand
Vickers by Danfoss
Cartridge Type
20 Design
Dimensions
8.77 in L x 6.87 in W x 5.4 in H
Displacement io
3.74
Drive Shaft Type
Straight Keyed
Grp Specifications
2-Bolt SAE B Mounting Flanged, SAE 4-Bolt Flanged Port, 1-1/2 in Inlet x 1 in Outlet
Housing Material
Iron
Maximum Operating Pressure
3000 psi
Mounting Type
Flanged
Port Location
In-Line with Outlet
Rotation Direction
Clockwise
Seal Material
Buna-N
Series
25V Series
Shaft Size
7/8 in Dia
Vane Type
Fixed Displacement and Balanced

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Product Questions & Answers (2)

Question by: Johnny A on Jul 13, 2025, 5:05 PM
Will this pump work okay in an injection molding machine?
Answer by: Customer Support on Jul 15, 2025, 6:56 AM
Application-wise, yes, this vane pump is listed as suitable for plastic injection molding, along with metal cutting, oil and gas, dump trucks, and wheel loaders.
Question by: Kurt L on Nov 19, 2025, 3:45 PM
runs at 2500 RPM rated speed, but what kind of flow am I actually gonna see out of this thing at that speed?
Answer by: Customer Support on Nov 21, 2025, 1:06 PM
At the rated speed of 2500 RPM, this pump is spec'd for 28.5 GPM. That's based on the 19 ring size and the 3.74 cubic inch displacement. Real-world flow can vary some depending on system pressure and line losses, but 28.5 GPM is what the pump is built to deliver under rated conditions.

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