Since 1989, Mikron has delivered precision engineering solutions, specializing in spindle reconditioning, precision grinding, ball screw grinding, and custom tooling. We focus on quality, accuracy, and reliable service to meet diverse industrial needs.

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Spindle Reconditioning

Spindle Reconditioning

High-Precision Spindle Reconditioning

Established in 1989, Mikron provides state-of-the-art spindle reconditioning and rebuilding services for CNC machining centers, turning centers, grinding machines, and specialized industrial equipment.

Spindles operate at extreme rotational speeds and tight tolerances, making them vulnerable to bearing wear, thermal distortion, runout errors, and contamination over extended operation. At Mikron, our certified engineers restore worn or damaged spindles back to factory OEM specifications—or even higher precision tolerances—delivering cost savings up to 70% compared to purchasing new replacement units.

Our Reconditioning Capabilities

With over 35 years of specialized expertise since 1989, Mikron offers complete end-to-end spindle rebuilding and precision restoration:

  • Complete Disassembly & Root-Cause Failure Analysis
  • Taper Regrinding (BT, BBT, HSK, CAT, ISO, Morse)
  • Super-Precision Bearings Replacement (P4 / ABEC 7 & 9)
  • Dynamic Balancing to ISO 1940 Quality Grades
  • Drawbar Force Verification & Seal Refurbishment
  • Sub-Micron Runout Inspection & Test Certification

Prior to final delivery, every reconditioned spindle is mounted in our test bench and run-in across its entire RPM spectrum. We monitor temperature stabilization, vibration signatures, and thermal elongation to ensure flawless performance when reinstalled on your shop floor.

Frequently Asked Questions

We recondition all types of machine tool spindles including belt-driven, direct-drive, gear-driven, motorized high-speed spindles, internal/external grinding spindles, lathe headstocks, and customized SPM spindles.
Our cylindrical grinding and precision hand-scraping techniques achieve radial and axial runout tolerances under 0.002 mm (2 microns), meeting or exceeding original OEM specifications.
Standard spindle overhauls are completed within 3 to 7 working days depending on parts availability. We also provide emergency expedited service to minimize client production downtime.
Yes, every reconditioned spindle is dynamically balanced to ISO 1940 standards and delivered with a comprehensive inspection certificate verifying runout, bearing preload, and thermal stability.

Have a spindle needing inspection or urgent repair?

Spindle Reconditioning