10/19/2026
Precision matters when it comes to CNC spindle rebuilds!
At Motor City Spindle Repair, we perform runout testing on grind plate grind (GPG) spindles using precision test bars to verify accuracy before returning them to service.
Our runout specifications are checked at 300mm (approximately 12 inches) from the spindle face, with a target of 10 microns (0.000394 inches), or approximately four ten-thousandths of an inch.
Why does this matter? Excessive spindle runout can lead to poor surface finishes, dimensional inaccuracies, increased tool wear, and costly production issues.
Our technicians understand that a successful spindle rebuild goes beyond replacing damaged components. It’s about verifying precision and making sure your spindle is ready to perform.
Have a GPG spindle that needs attention? Contact our team for a free evaluation!
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