Key Cutters Performance Analysis

At approximately 70% volumetric efficiency the positive displacement ball piston motor will rotate at

900 RPM per GPM

238 RPM per LPM

flow.

To calculate cutter RPM:	Example: KC02 Keycutter with Cutter #103, coolant flow 9 GPM: 9(GPM) x 900(RPM of motor per GPM flow) / 4.5(gear ratio of KC02) = 1800 RPM

To calculate cutter RPM:	Example: KC02 Keycutter with Cutter #103, coolant flow 30LPM: 30(LPM) x 238(RPM of motor per LPM flow) / 4.5(gear ratio of KC02) = 1800 RPM

Under test conditions, the ball piston motor develops.019 in. lbs. of torque for each PSI of coolant pressure.

Under test conditions, the ball piston motor develops .03 Nm of torque for each Bar of coolant pressure.

To calculate Keycutter torque:	Example: KC03 Keycutter with Cutter #302 at 800 PSI coolant pressure: 800 (coolant pressure in PSI) x .019 x 5.5 (gear ratio of KC03) = 83.6 in. lbs. or 6.96 ft. lbs. of torque.

To calculate Keycutter torque:	Example: KC03 Keycutter with Cutter #302 at 55 Bar coolant pressure: 55 (coolant pressure in Bar) x .03 x 5.5 (gear ratio of KC03) = 9.07 Nm of torque.