![]() If the motor is already a three phase, this would definitely be the way to go for probably under $500.00. Using linked belts will make changing pulleys go a little faster and will give a smoother running machine.Ī more sophisticated approach would be to use an inverter control and a three phase motor which would give an unlimited speed range, including higher than stock speeds, reversibility, and braking. Pulleys do waste a certain amount of power, to minimize the loss always use the largest pulleys that will give you the speed you want and will fit in the available space. ![]() In practical terms, a slower speed cutter will be harder to stall, not that you're likely to stall something driven by a 5 HP motor. In fact, if you reduce the spindle speed, the torque will increase proportionally. Changing speed by using different size pulleys or different gear ratios has no affect on the horsepower available to the cutting head.
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