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strumke · 08-27-2012, 03:37 AM

Can anyone help me understand this motor name plate?

I can pick this up for pretty cheap and I wanted to use it as a milling motor at the 136 RPM listed, but I don't know what it means when there are 2 RPMs (136/3420)?

I want to drive the mill directly without using pulleys. Can I do it with this?

SilverZero · 08-27-2012, 03:49 AM

I may be wrong, but I think the 3420 is a more standard RPM for a motor like that. I can't imagine you'd plug that in and watch it turn at 136rpm - that's just a bit over 2 revolutions every second. You could almost hand-crank at that speed.

jfrizzell · 08-27-2012, 04:21 AM

It's possible this is a dual winding motor. There would be two sets of leads out of the motor. One set for high speed and one set for low speed.

DeafSmith · 08-27-2012, 04:30 AM

Quote:

Originally Posted by SilverZero

I may be wrong, but I think the 3420 is a more standard RPM for a motor like that. I can't imagine you'd plug that in and watch it turn at 136rpm - that's just a bit over 2 revolutions every second. You could almost hand-crank at that speed.

It must be a gear motor to run at that speed; i.e., a motor and gearbox combination, in which case it might have enough torque to drive the mill directly.
Unfortunately, the box labeled Nm (presumably Newton meters) where I would expect to see a torque rating is blank, so no way to tell except to try it.

strumke · 08-27-2012, 02:27 PM

Quote:

Originally Posted by jfrizzell

It's possible this is a dual winding motor. There would be two sets of leads out of the motor. One set for high speed and one set for low speed.

Quote:

Originally Posted by DeafSmith

It must be a gear motor to run at that speed; i.e., a motor and gearbox combination, in which case it might have enough torque to drive the mill directly.
Unfortunately, the box labeled Nm (presumably Newton meters) where I would expect to see a torque rating is blank, so no way to tell except to try it.

For $50, I'll probably pick it up and try it out.

Assuming there are 2 sets of leads to run at the various speeds, it is simply just a matter of connecting the wires to a plug and sticking it in a regular 110 outlet (or am I just looking at a quick way to blow something up)?

It's 1.5hp, came from an industrial shredder, so I'm assuming it's got some decent torque to rip through some grain.

Anything else I should consider here?

jfrizzell · 08-27-2012, 02:57 PM

Quote:

Originally Posted by strumke

For $50, I'll probably pick it up and try it out.

Assuming there are 2 sets of leads to run at the various speeds, it is simply just a matter of connecting the wires to a plug and sticking it in a regular 110 outlet (or am I just looking at a quick way to blow something up)?

It's 1.5hp, came from an industrial shredder, so I'm assuming it's got some decent torque to rip through some grain.

Anything else I should consider here?

The motor nameplate does not list the voltage. I would confirm it is in fact a 110V, single phase motor before you buy it. Since it came off industrial equipment, it is possible it is a 3 phase motor. Knowing that it came off a shredder, it is likely there is a gearbox to run it at the lower speed.

**kellzey** · 08-27-2012, 03:07 PM

Quote:

Originally Posted by jfrizzell

The motor nameplate does not list the voltage. I would confirm it is in fact a 110V, single phase motor before you buy it. Since it came off industrial equipment, it is possible it is a 3 phase motor. Knowing that it came off a shredder, it is likely there is a gearbox to run it at the lower speed.

Sure it does. 4th row from the bottom

115V 60 Hz

Make sure whatever you use (wiring, extension cord) is rated for at least 30 amps.

jfrizzell · 08-27-2012, 04:10 PM

Quote:

Originally Posted by kellzey

Sure it does. 4th row from the bottom

115V 60 Hz

Make sure whatever you use (wiring, extension cord) is rated for at least 30 amps.

My bad...I was looking at the "V" in the last line.

strumke · 08-27-2012, 08:54 PM

Just spoke to the guy, it had enough torque to snap a 1/2" drive train and weighs about 50lbs... overkill for a MM-2? For $50, I can't see it being a bad thing to have around to build a milling table, even if I don't use it right away.

For the wiring... there are about 6 wires coming off of this thing, any way to know which ones do what (aside from trial and error)?
Since it was made in West Germany, and came off of another piece of equipment I'm guessing there is no manual to be found.

There's a photo of the same model in this listing:
http://www.ebay.com/itm/SCHLEICHER-ELECTRIC-MOTOR-1-5-HP-115V-3420-RPM-MODEL-F585412-/310408749159

5th picture over shows the wiring.

Phyrst · 08-27-2012, 09:08 PM

3420 rpm is pretty fast. I would think you would want something more in the 1200 rpm range for a mill.