On 10/03/2018 10:45 AM, John Figie wrote:
Baldor will not reply. Rockwell bought Reliance in the 90s. The
electrocraft products became Rockwell Automation Products (Allen Bradley)
Later Rockwell sold Reliance to Baldor but kept the Electrocraft stuff.
Well, the first thing to do is put the motor shaft in your
machine spindle and turn it at a known RPM.
(Make sure to have the motor case secured in a vise or
whatever, to prevent it spinning on you.)
Then, measure the voltage at the motor terminals. That will
give you the KV constant, Volts/thousand RPM. If the
voltage is pretty low at 700 - 1000 RPM, then most likely
the rating is not a real MAXIMUM.
I can't imagine why the motor would fly apart at only 700
RPM. But, maybe it has a high KV, and they don't want to
run excessive voltage on the commutator.
Jon
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