Compact, two-stage, external gear Pump designed for use at elevated pressures. Ideal for press-type applications requiring fast approach/retract speeds and slower peak actuator work speeds due to horsepower limitations or safety constraints. 1/2 in. shafts use 404 woodruff key. 5/8 shafts use 3/16 x 1 in. straight key. 4,000 RPM max. Maximum pressure 3,000 PSI.