51 Series Gear Pump/Motor. Birotation - Pad mount. 1-3/4'' Gears. 4.49 Cubic Inch Displacement. 19.43 GPM Per 1,000 RPMs. 34.98 Gallons Per Minute Max. 2400 Max PSI. 1,800 Max RPMs. Approximately 49 horse power required for max pressure and flow. 1-1/4'' keyed shaft 5/16'' keyway. #20 (1-5/8''-12 Threads) ORB Rear Ports. #24 (1-7/8''-12 Threads) ORB Housing Ports.
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