54
TRAK Machine Tools
Southwestern Industries, Inc.
ProtoTRAK SMX, K2, K3 & K4 & Retrofit Safety, Installation, Maintenance, Service and Parts List Manual
Machines with spindle control drive
Possible Cause
Check This
Machine setup or tooling problem
If the noise is most evident under load (cutting situations)
then it is important to look at setup and tooling being used.
Ask the following questions.
Is the cutter dull? Is the tool loose in the holder? Am I
taking a bigger cut then is possible on the machine? Is the
part moving in the vice? Am I using realistic speeds and
feeds?
Any one of these can have a significant impact.
Upper spindle bearing is worn out.
Remove the upper bearing plate above the spindle. This
will unload the bearing. If the noise goes away then this
bearing should be replaced.
Verify nosepiece is tight on bottom
of spindle.
To check if the nosepiece is bottomed out try to insert a
piece of paper in between the nosepiece and the quill. If a
piece of paper does fit then this may be the problem.
Before tightening or loosening the nosepiece make sure to
loosen the setscrew that holds it in place.
Spindle bearings are worn out
This is categorized by a high pitch sound and is most
evident at high RPM’s. It should also cause chatter under
load. Replace the spindle if this is the case. See spindle
replacement in Section 5.
The belt is not lined up with the
grooves on the pulleys.
Make sure the 10-ribs on the belt are lined up with the 10-
grooves on the 2-pulleys. If the belt is frayed then replace
the belt.
