Drill press electric motor
- Thread starter Rod N
- Start date
The problem with treadmill motors is as follows:
1. Most have non standard mounts and shafts. That means lots of work to improvise. Existing DP motor step pulley and belts probably won't work. Failure to use a step pulley means you'll sacrifice any torque amplification capability.
2. TM controllers lack features available on VFD's. (ex: remote control, overclock, reverse, braking, direct RPM readout, safety protections, etc, etc, etc)
3. Finding the treadmill where you can harvest an appropriate motor and the hassle/expense disposing of the rest of it.
Unless you have a cheap treadmill with all the correct components, a 3 phase motor + VFD is basically plug and play.
1. Most have non standard mounts and shafts. That means lots of work to improvise. Existing DP motor step pulley and belts probably won't work. Failure to use a step pulley means you'll sacrifice any torque amplification capability.
2. TM controllers lack features available on VFD's. (ex: remote control, overclock, reverse, braking, direct RPM readout, safety protections, etc, etc, etc)
3. Finding the treadmill where you can harvest an appropriate motor and the hassle/expense disposing of the rest of it.
Unless you have a cheap treadmill with all the correct components, a 3 phase motor + VFD is basically plug and play.
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I have to wonder about the HP ratings for these motors. If they run on a typical 120 volt outlet they might be 1-1/2 HP at full speed. at 1/2 speed what are they, 1/2 HP or less? With a drill press if you need less RPM you are probably drilling large diameter holes which means you need more power, not less. Step pulleys or a variable speed belt drive overcome the RPM and power issue.
I have never messed with one, but then my drill press is 1 HP, 3 phase with variable speed pulleys and a VFD.
I have never messed with one, but then my drill press is 1 HP, 3 phase with variable speed pulleys and a VFD.
You're right. A step pulley arrangement can amplify torque. I use a 1.5 HP motor + VFD and I set the pulleys on the highest speed setting. But if I ever need higher torque at lower RPM I can always change the belt to a lower range. It's very rare I've ever has to but you could get by with a much smaller motor and still have that option.
bubinga
Well-known member
I agree the VFD and a VFD duty 3 phase motor is a better option. I have that set-up on my wood lathe.
I even have a 110 volt VFD.
But the treadmill set-up worked out well for me on my drill press.
As stated, it is basically a 56 frame motor, with a 5/8" shaft.
(I keep my pullies on the lower speed settings, as to allow a higher motor speed for higher HP out of the motor)
If the pulley fits the shaft and if the mount is compatible, then use it. Ideally a TEFC (totally enclosed fan cooled) motor would be better but I wouldn't worry about it for a home shop.What do you guys think of this motor for my drill press?
bubinga
Well-known member
Perfect!What do you guys think of this motor for my drill press?
bubinga
Well-known member
I think he just got the motor
bubinga
Well-known member
inally stopped screwing around and got a motor and set up a switch.
Looks good
How does it run?
