TROUBLESHOOTING SPINDLE ISSUES

There are plenty of issues that can occur with CNC spindles.

If you are experiencing any of the following, check out what has caused it and then contact the experts if the condition remains the same. 

Actuation while running: If the piston of the actuator contacts the drawbar while still in rotation, 
failure can occur. This is usually a result of operator or programming errors. This can also be 
caused from contamination of the pneumatic actuator of the exhaust muffler. There will be witness marks 
on the end faces of the drawbar nut or piston rod.

Tool sticking inside taper: This is normally caused by heat transfer due to an oversized tool. It 
can also result from improper ejection stroke of the drawbar because of broken springs in the drawbar
or contamination of the component. Take a look at the drawbar to see if you notice anything immediately
wrong.

Tool slipping inside taper: This is normally caused when heat is transferred from long and heavy cuts. 
Because of these cuts, the tool taper can be expanded or contracted. Again, examine the overall drawbar.

High axial load: When the CNC spindle experiences high axial load it can cause it to plunge into the material
instead of ramping in. It can also crash into the overall worktable. Check the (second) front bearings.

High radial load: This can occur when the machine feed rate is too quick for whatever is being cut. It
can also occur when the cutting chips are dull. Check the (first) front bearings.

Contact us anytime if you’d like to chat with our Experts or stop by our 25,000 SF manufacturing facility located in Dearborn, Michigan!
(734) 261-8600 or email us at Sales@motorcityrepair.com 

*Quotations are 100% free of charge
*All quotes are accompanied by a detailed failure analysis report
*We frequently repair spindles in 2-5 business days in emergency situations
*Normal time averages 1-3 weeks for standard repairs
*We keep precision bearings, seals, o-rings, encoders, and other commonly replaced spindle parts in stock and on hand
*Always available 24 hours a day and 7 days a week for emergency repair service
*We deliver the repaired product to you
*Our repairs are balanced, test ran, and certified with a full 1 Year Warranty
*We repair or build new depending on your needs
*Guaranteed cost savings

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