PG331 Series Cast Iron Gear Pump, 3.92 cu in/rev, 2/4-Bolt SAE B Mounting Flange, 13T Splined x 1.61 long SAE B Shaft, SAE -20 Side Inlet SAE -16 Side Outlet, CW Rotation

Displacement
3.92
Displacement
3.92
Brand
Salami Hydraulics Na Inc
Brand
Salami Hydraulics
Pack Size
1.00
UOM
EA
Mount
2/4-Bolt SAE B
Mount
2/4-Bolt SAE B
Ports
SAE -20 Side Inlet SAE -16 Side Outlet
Ports
SAE -20 Side Inlet SAE -16 Side Outlet
Pressure Rating
2900
Rated Flow
30.10
Rated Flow
30.1
Rotation
CW
Shaft
13T Splined x 1.61 long SAE B
Shaft
13T Splined x 1.61 long SAE B
Speed Rating
2250 RPM
Speed Rating
2250 RPM
Supplier Part Number
615200072
Alternate Part Numbers
Alternate Part Number C1MW27, Alternate Part Number PG331-72D-R55S3
Product Weight
41.80 lbs

Product Questions & Answers

Will this gear pump work okay with standard hydraulic fluid, or do I need to get something special?
Question by: Dale M on Jun 24, 2025, 2:52 PM
This gear pump is compatible with standard hydraulic fluids, within the viscosity and temperature ranges specified. Normal operating range is 85 SUS to 297 SUS, and temperature should be between -4°F to 185°F with the standard Buna-N seals.
Answer by: Customer Support on Jun 26, 2025, 6:07 AM
pump's rated at 2250 RPM continuous -- is that based on the full 3.92 displacement or does it drop off at higher pressures?
Question by: Shawn C on Mar 20, 2026, 4:06 PM
At 3.92 cubic inches per revolution, the continuous speed rating of 2250 RPM applies at the working pressure specified for that displacement range. Salami publishes a displacement-versus-speed table for the PG331 series, and the rated flow of 30.1 GPM reflects operation at that speed under those conditions. If you're pushing toward the upper end of the pressure range, expect the continuous speed ceiling to shift downward in line with what that table shows for your specific operating pressure.
Answer by: Customer Support on Mar 22, 2026, 6:48 AM

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