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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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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
Product Weight
75.00 lbs
Product Questions & Answers 2

Product Questions & Answers

got a 45VQ50A1D20 on the machine now. is this the same pump, or am i gonna get burned on the shaft and ports
Question by: Sheila P on Jan 27, 2026, 3:11 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.
Answer by: Customer Support on Jan 28, 2026, 6:48 PM
Reckon this'll fit on my older machine? It's got a 2-bolt SAE C mounting flange.
Question by: Kent A on Sep 3, 2025, 8:10 AM
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.
Answer by: Customer Support on Sep 4, 2025, 7:50 PM

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420616-7 45VQ42A11C20-L 14 Tooth SAE D Splined 8.46 42 65.92 in-Line with Outlet CCW 2500 2200 RPM
420617-2 45VQ50A11B20 14 Tooth SAE D Splined 9.9 50 77.14 90 deg CW from Outlet CW 2500 2200 RPM
420617-3 45VQ50A11C20 14 Tooth SAE D Splined 9.9 50 77.14 in-Line with Outlet CW 2500 2200 RPM
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420617-7 45VQ50A11C20-L 14 Tooth SAE D Splined 9.9 50 77.14 in-Line with Outlet CCW 2500 2200 RPM
420618-2 45VQ60A11B20 14 Tooth SAE D Splined 11.8 60 91.94 90 deg CW from Outlet CW 2500 2200 RPM
420618-3 45VQ60A11C20 14 Tooth SAE D Splined 11.8 60 91.94 in-Line with Outlet CW 2500 2200 RPM
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420618-7 45VQ60A11C20-L 14 Tooth SAE D Splined 11.8 60 91.94 in-Line with Outlet CCW 2500 2200 RPM
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421965-3 45VQ42A86C20 1-1/2 Straight Keyed 8.46 42 65.92 in-Line with Outlet CW 2500 2200 RPM
421965-4 45VQ42A86D20 1-1/2 Straight Keyed 8.46 42 65.92 90 deg CCW from Outlet CW 2500 2200 RPM
421965-5 45VQ42A86A20-L 1-1/2 Straight Keyed 8.46 42 65.92 Opposite Outlet CCW 2500 2200 RPM
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421966-2 45VQ50A1B20 1-1/4 Straight Keyed 9.9 50 77.14 90 deg CW from Outlet CW 2500 2200 RPM
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