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by cwalter
Mon Jun 09, 2014 3:51 am
Forum: Troubleshooting
Topic: Z compression and bad alignment
Replies: 21
Views: 3794

Z compression and bad alignment

I believe the problem you have with the movement of your z axis linear system is the fit between the shafts & ball bushings.Tolerances for both the linear ball bushing & linear shaft have to be controlled (the standard OD shaft tolerance is .4998/.4993 & for the linear ball bushing bore tolerance it...
by cwalter
Fri May 23, 2014 4:38 am
Forum: Tips & Tricks
Topic: Z axis Linear Bearing Upgrade
Replies: 122
Views: 23121

Z axis Linear Bearing Upgrade

When it comes to linear ball bushings there is a big difference in performance (smooth movement & constant reliability) between the NB linear ball bushings and bushings coming from third world linear companies. For example the NB ball bushing has steel balls running in the linear retainer circuit th...

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