[djh82uk]

Thank you, yes I am engraving pcb's

I kinda figured the RPM thing, just wanted confirmation, perhaps i should take off the big motor and fit a kress.

I just cannot find decent RPM AC Motors that run on 220V and have a 10mm shaft


DJH

[scavenger]

perhaps i should take off the big motor and fit a kress.
I just cannot find decent RPM AC Motors that run on 220V and have a 10mm shaft
DJH

A free source of reasonable speed (10K) AC 220/240 motors is a an unwanted washing machine. On some models with a fast spin they use a multi speed reversible motor for both wash and spin which is geared down about 10-1 to achieve good low speed torque for the wash cycle and can have 10,000rpm top speed for the 1000rpm spin. The motor I recently liberated from an old machine has a belt pulley which will easily drive a separate high speed spindle 1-1 or higher to give you 20K +. Or it might be possible to remove the pulley and make some sort of 10mm adaptor if you cannot accommodate or don't want a separate spindle, although I think you really need as much rpm as possible for PCB routing (not speaking from experience here yet... PCB milling is on my todo list! ).

As these motors have multiple connections (5 on my motor) it helps if you can grab the controller board and wiring harness too with a view to simplifying driving the motor. These are fairly chunky heavy motors to move around and they have more power than you need for routing PCB's but as you already have a large motor installed may be worth considering (if you haven't already)?

Phil

[Oldmanandhistoy]

I kinda figured the RPM thing, just wanted confirmation, perhaps i should take off the big motor and fit a kress.

I just cannot find decent RPM AC Motors that run on 220V and have a 10mm shaft

Are you thinking of running the original spindle at 10 000 rpm +? If so I would find out if the bearings are up to those kinds of speeds first.

The Kress spindle would be a better choice imho.

John