20
CANNON
®
CT-1000 Constant Temperature Bath
Revision 3.1a—February, 1998;
CANNON
®
Instrument Company
P.O . Box 16 • State College, PA • USA
Disconnect the motor, hold the motor tightly against the body, and grasp
the shaft in the right hand. Bend the shaft away from the line segment on
the shaft.
Repeat the test procedure, marking the shaft at a location slightly re-
moved from the first crayon mark.
If the mark appears at the same side of a shaft as the first mark and is
about the same length, the bending was not great enough to alter the
condition and should be repeated with more force applied. If the mark has
shifted to the opposite side, the force was too great and the shaft must be
bent back with less force to correct the situation.
This is a trial-and-error process which usually must be repeated several
times. When the crayon makes a line at least two-thirds of the way
around the shaft, the run-out has diminished to an acceptable level. A
uniform line completely around the shaft would indicate no run-out
detectable by this procedure.
