No-load current and torque [TANKS]

[William and Melissa Johns <gizmology-at-gizmology.net>]

Folks,
   Does anyone know if there is a relationship between no-load current and 
torque for a permanent magnet motor?  I know that the torque vs rpm curve 
is linear, as is torque vs current, voltage vs rpm, etc.  But if all you 
know is rpm and no-load current, what can you do with it?
   Also, does anyone know where to find specs on a Siemens motor?  If it's 
on their website, I can't find it.

Bill



--

When your only tool is a hammer, everything looks like a thumb.