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45VQ Series Vane Pump, 50 Ring Size, 1-1/4 Straight Keyed Shaft, Outlet 90 deg CCW from Outlet, CW Rotation

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Description & Features

Designed for high-pressure, high-speed hydraulic applications, the 45VQ Series Vane Pump, 50 Ring Size, 1-1/4 Straight Keyed Shaft, Outlet 90 deg CCW from Outlet, CW Rotation is a single vane pump from Eaton Vickers rated to 2500 PSI with a flow rate of 77.14 GPM at a maximum speed of 2200 RPM. The 50 ring size and 1-1/4 straight keyed shaft configuration make it well suited for demanding industrial drive setups.

Mounting follows a 2-bolt SAE C flange pattern, with SAE 4-bolt flange ports sized at 3" inlet and 1-1/2" outlet. The inlet port is positioned 90 degrees counterclockwise from the outlet, and the pump runs clockwise rotation. Common application areas include metal cutting machinery, plastic injection molding, dump trucks, wheel loaders, and oil and gas equipment. Built for outstanding volumetric efficiency and longer service life, this pump is a reliable choice across a range of medium-to-heavy industrial hydraulic circuits.

SKU: 421966-4

Supplier Part Number (MPN): 421966-4

Alternate Part Numbers: 45VQ50A1D20

Specifications

Application
Oil and Gas, Metal Cutting, Dump Truck, Wheel Loader, Plastic Injection Molding
Displacement
9.90
Displacement
9.9
Brand
Danfoss (Power Solutions II LLC)
Brand
Danfoss Power Solutions
Pack Size
1.00
UOM
EA
Features
Longer operating life|Oustanding volumetric efficiency|Built for high-pressure, high-speed applications
Maximum Pressure
2500
Maximum Pressure
2500
Port Location
90 deg CCW from Outlet
Rated Flow
77.14
Rated Flow
77.14
Ring Size
50
Ring Size
50
Rotation
CW
Seal Material
None
Series
45VQ
Shaft
1-1/4 Straight Keyed
Shaft
1-1/4 Straight Keyed
Special Features
None
Speed Rating
2200 RPM
Speed Rating
2200 RPM
Supplier Part Number
421966-4
Alternate Part Numbers
Alternate Part Number 45VQ50A1D20, Alternate Part Number MINO-00900X56272
Product Weight
75.00 lbs

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Product Questions & Answers (2)

Question by: Sheila P on Jan 27, 2026, 3:11 PM
got a 45VQ50A1D20 on the machine now. is this the same pump, or am i gonna get burned on the shaft and ports
Answer by: Customer Support on Jan 28, 2026, 6:48 PM
Match-up points are spelled out on this one. It’s model 45VQ50A1D20 with a 50 ring size, 9.9 displacement, and a 1-1/4 straight keyed shaft. Mounting is a 2-bolt SAE C flange, and the ports are SAE 4-bolt flange style with a 3 inch inlet and 1-1/2 inch outlet. Rotation is CW, and the port location is 90 degrees CCW from the outlet.
Question by: Kent A on Sep 3, 2025, 8:10 AM
Reckon this'll fit on my older machine? It's got a 2-bolt SAE C mounting flange.
Answer by: Customer Support on Sep 4, 2025, 7:50 PM
Yes, this 45VQ series pump uses a 2-bolt SAE C mounting flange, so it should bolt right up if that's what you've got.