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Hydraulic Double Vane Pump, No. 2 outlet 135° CCW from inlet, 4.12 cu in/rev Front, 2.80 cu in/rev Rear, 2-Bolt SAE B Mounting Flange, 13T SAE B Splined Shaft, SAE 4-Bolt Flange, Inlet 2-1/2, Outlets 1 Front 3/4 Rear, CCW Rotation

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Description & Features

The Hydraulic Double Vane Pump No. 2 outlet 135 CCW from inlet is engineered for power steering and industrial small units and small press applications. Featuring a double configuration this pump offers a front displacement of 4.12 cu in/rev and a rear displacement of 2.80 cu in/rev.

Its 2-Bolt SAE B mounting flange and 13T SAE B splined shaft provide robust connectivity. The pump is designed with an SAE 4-Bolt flange an inlet of 2-1/2 inches and outlets measuring 1 inch front and 3/4 inch rear.

Built for high-pressure high-speed applications this pump ensures longer operational life and outstanding volumetric efficiency. With a counter-clockwise rotation this model is well-suited for demanding industry-specific requirements.

MPN: 428649-5

Supplier Part Number: 428649-5

Specifications

Brand
Vickers by Danfoss
Cartridge Type
20 Design
Configuration
Double
Dimensions
11.69 in L x 6.88 in W x 5.75 in H
Displacement
4.1 cu-in Shaft, 2.8 cu-in Cover
Drive Shaft Type
13 Tooth SAE B Splined
Flow Rate
21 gpm Shaft/14 gpm Cover
Housing Material
Iron
Maximum Operating Pressure
2500 psi
Mount io
2 Bolt SAE B
Mounting Type
2-Bolt SAE B
Port
SAE 4-Bolt Flange, 2-1/2 in Inlet, 1 in Outlet, 3/4 in Rear Front
Rotation Direction
Anti-Clockwise, Counter Clockwise
Seal Material
Buna-N
Segment Code
A
Series
2520V Series
Vane Type
Fixed Displacement and Balanced

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Product Questions & Answers (3)

Question by: Darryl T on Jan 18, 2026, 3:24 PM
Got a 2520VQ series setup I'm trying to match up a replacement for. This one's the 428649-5 with the 4.12 up front and 2.80 in the rear, CCW rotation. That all line up with what y'all carry?
Answer by: Customer Support on Jan 19, 2026, 6:47 PM
Yeah, that lines up exactly. SKU 428649-5 is the 2520VQ series double vane pump with 4.12 cu in/rev front displacement and 2.80 cu in/rev rear, running counter-clockwise rotation. The shaft is a 13T SAE B splined, and it mounts on a 2-bolt SAE B flange. Ports are SAE 4-bolt flange with a 2-1/2 inch inlet, 1 inch front outlet, and 3/4 inch rear outlet. If those specs match what came off your machine, this is the right unit.
Question by: Melvin K on May 28, 2025, 4:39 PM
trying to match up a double pump, what are the front and rear displacements on this one?
Answer by: Customer Support on May 30, 2025, 6:52 AM
For the double configuration, the front section is 4.12 cu in/rev and the rear section is 2.80 cu in/rev.
Question by: Howard C on Apr 3, 2025, 7:24 PM
Will this double vane pump work for power steering applications on smaller units?
Answer by: Customer Support on Apr 5, 2025, 4:51 PM
Yes, this hydraulic double vane pump is engineered specifically for power steering applications, as well as industrial small units and small press applications.

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