I have considered putting vfds on my shopmaster bridgemill instead of using the step pulleys that came with the machine. what I have learned from the vfd supplier is that the motors are constant torque up to the base speed of 1800 rpm. If I use the step pulleys at 200 rpm I will have 9 times the torque at the spindle than the vfd will provide at 200 rpm out. Is there a solution for the torque decrease problem maintaining the same size hp motor other than taking a much lighter cut.
Brucesu1
Thread: vfd on shopmaster bridge mill
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08-20-2007, 05:36 PM #1
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vfd on shopmaster bridge mill
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08-20-2007, 08:48 PM #2
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You should keep the step pulleys. If you install a VFD, you will not have to change pulleys very often but will still want the capability to do so.
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