RE: [CAD_CAM_EDM_DRO] Re: What kind of motor should I use?

Good points and one other problem is most people don't consider when
running spindles at much higher speeds than designed is the significant
safety factor problem of running a large pulley that was designed to run
at 1/4 that speed. Have you ever seen a 7"D pulley come apart? I would
think the centrifugal forces would be enormous. I have not seen one do
this either but would not want to be in the general area when it did
come apart.
Dan

-----Original Message-----
From: Peter Seddon [mailto:peter@...]
Sent: Tuesday, February 05, 2002 2:14 AM
To: CAD_CAM_EDM_DRO@yahoogroups.com
Subject: Re: [CAD_CAM_EDM_DRO] Re: What kind of motor should I use?

The thought of running a motor rated at 3000rev/min at 14,400rev/min is
terrifying:
1. Bearing capability
2. Rotor integrity and possible bursting
3. Out of balance problems
4. Overal efficiency and heating problems

Stick with motors designed for the task and go for longevity of your own
life !!

Regards Peter