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45VQ Series Vane Pump, 50 Ring Size, 1-1/4 Straight Keyed Shaft, Outlet Opposite 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
Opposite 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
421966-1
Alternate Part Numbers
Alternate Part Number 45VQ50A1A20
Product Weight
75.00 lbs
Product Questions & Answers 2

Product Questions & Answers

got a 45VQ50A1A20 on the machine now. is this SKU 421966-1 the same pump or am I askin for trouble
Question by: Lee W on May 22, 2025, 11:41 AM
Match-up looks straightforward here. SKU 421966-1 is listed as Danfoss Power Solutions 45VQ series with alternate part number 45VQ50A1A20, and it keeps the key identifiers: 50 ring size, 1-1/4 straight keyed shaft, CW rotation, 2-bolt SAE C mount, and SAE 4-bolt flange ports with a 3 inch inlet and 1-1/2 inch outlet.
Answer by: Customer Support on May 23, 2025, 2:59 PM
got a dump truck running a 45VQ setup right now and need to know if this one'll keep up -- what's the flow rate on this pump at operating speed?
Question by: Lee C on Feb 9, 2026, 7:52 PM
At 2200 RPM, this pump puts out 77.14 GPM. For dump truck hydraulics, that's a solid output, and the 45VQ series is actually listed as a direct fit for that kind of mobile equipment work. Pair that with the 2500 PSI max pressure rating and you've got plenty of muscle for lifting and dumping cycles.
Answer by: Customer Support on Feb 11, 2026, 8:35 AM

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420616-4 45VQ42A11D20 14 Tooth SAE D Splined 8.46 42 65.92 90 deg CCW from Outlet CW 2500 2200 RPM
420616-5 45VQ42A11A20-L 14 Tooth SAE D Splined 8.46 42 65.92 Opposite Outlet CCW 2500 2200 RPM
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
420617-4 45VQ50A11D20 14 Tooth SAE D Splined 9.9 50 77.14 90 deg CCW from Outlet CW 2500 2200 RPM
420617-5 45VQ50A11A20-L 14 Tooth SAE D Splined 9.9 50 77.14 Opposite Outlet CCW 2500 2200 RPM
420617-6 45VQ50A11B20-L 14 Tooth SAE D Splined 9.9 50 77.14 90 deg CW from Outlet CCW 2500 2200 RPM
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
420618-4 45VQ60A11D20 14 Tooth SAE D Splined 11.8 60 91.94 90 deg CCW from Outlet CW 2500 2200 RPM
420618-5 45VQ60A11A20-L 14 Tooth SAE D Splined 11.8 60 91.94 Opposite Outlet CCW 2500 2200 RPM
420618-6 45VQ60A11B20-L 14 Tooth SAE D Splined 11.8 60 91.94 90 deg CW from Outlet CCW 2500 2200 RPM
420618-7 45VQ60A11C20-L 14 Tooth SAE D Splined 11.8 60 91.94 in-Line with Outlet CCW 2500 2200 RPM
421965-2 45VQ42A86B20 1-1/2 Straight Keyed 8.46 42 65.92 90 deg CW from Outlet CW 2500 2200 RPM
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
421965-7 45VQ42A86C20-L 1-1/2 Straight Keyed 8.46 42 65.92 in-Line with Outlet CCW 2500 2200 RPM
421966-2 45VQ50A1B20 1-1/4 Straight Keyed 9.9 50 77.14 90 deg CW from Outlet CW 2500 2200 RPM
421966-3 45VQ50A1C20 1-1/4 Straight Keyed 9.9 50 77.14 in-Line with Outlet CW 2500 2200 RPM
421966-4 45VQ50A1D20 1-1/4 Straight Keyed 9.9 50 77.14 90 deg CCW from Outlet CW 2500 2200 RPM
421966-5 45VQ50A1A20-L 1-1/4 Straight Keyed 9.9 50 77.14 Opposite Outlet CCW 2500 2200 RPM
421966-7 45VQ50A1C20-L 1-1/4 Straight Keyed 9.9 50 77.14 in-Line with Outlet CCW 2500 2200 RPM
421967-2 45VQ60A1B20 1-1/4 Straight Keyed 11.8 60 91.94 90 deg CW from Outlet CW 2500 2200 RPM
421967-3 45VQ60A1C20 1-1/4 Straight Keyed 11.8 60 91.94 in-Line with Outlet CW 2500 2200 RPM
421967-4 45VQ60A1D20 1-1/4 Straight Keyed 11.8 60 91.94 90 deg CCW from Outlet CW 2500 2200 RPM
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