While looking at the end of the crankshaft with the pump manifold to your right, the crankshaft would turn clockwise (forward rotation). We recommend the pump operate with a forward rotation. Either side of the shaft can drive the pump while the unused side is covered with a shaft protector. Many of our pumps have a double-sided crankshaft configuration. Air-driven solutions are available but very inefficient. Pumps can be directly driven by hollow-shafted drives, bell housing and flexible coupler, gearbox, or hydraulic motor. Combustion engines generate different torque levels at various rpm’s, and electric motors generate relatively constant torque. Once you know the torque and rpm, consult the engine manufacturer to find an engine that can meet or exceed those requirements. Contact the engine supplier to confirm the horsepower requirement.įor proper engine selection, it is recommended to determine the required continuous torque at the desired rpm.Using gas to electric factor of 1.4, 8.56 Hp x 1.4 = 11.98 Hp (would use a 13 Hp gas engine) Example: 5 gpm x 2500 psi / 1460 = 8.56 electric horsepower.Diesel-powered = Use a range from straight-line electric horsepower to electric horsepower x 1.4.Gas powered = Electric horsepower x 1.4.Based on an electric horsepower calculation, gas and diesel horsepower can be roughly estimated.This guide will focus on electric motor power pumping applications, which is the most frequently requested. We recommend you contact your motor supplier for advice on what products they recommend for your application. gpm (gallons/minute) x psi / 1460 = Electric brake horsepower.Electric Brake Horsepower and Torque Formulas: Below is a formula for calculating electric brake horsepower. Horsepower requirements vary from pump to pump based on flow and pressure requirements.Ĭat Pumps literature references electric brake horsepower unless otherwise indicated.Įlectric motors are defined by several specifications, including voltage, amperage, rpm, phase (single or three), cycle (50 or 60 Hz), insulation class, motor type including TEFC, open drip, hazardous, sanitary wash-down, explosion-proof, severe duty, premium efficiency (IEEC).
Horsepower measures the rate at which work is being done from these power sources. Pumps are often powered by electric motors, engines, air motors, and hydraulic motors.
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