Welcome to KERN Your spindle service partner

Most trusted spindle repairs

Premium quality made in Germany

KERN is your international partner for spindle repair, spindle consulting and all the spindle services necessary to ensure reliable and safe operation of your turning, grinding or milling spindle.
Working in partnership, we have been providing customers from medium-sized businesses and large corporations with individual, innovative services for almost 20 years.
Take advantage of our experience and send us your inquiry – regardless of the type of spindle and the manufacturer.

Customers who trust us

KERN – our core competence for successful cooperation

A success concept – our service process

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On request: individual telephone consultation

Ask us your question about anything “spindle”! We give you tailor-made advice about your problem, free of charge, and look for an optimal solution. We are happy to give you valuable tips on preventive maintenance – and on other topics as well.

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Spindeleingang in der KERN Niederlassung

If you need repair or analysis, send your spindle to us. On request we organize the dismantling and transport for you.

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Detailed failure analysis

  • Dismantling
  • Leak testing
  • IKZ testing
  • Free testing of all electronic and mechanical components
  • Innovative failure report with complete photo documentation for you

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Preparation of the quote, approval of the customer

Based on our failure analysis, we create and send you a detailed estimate.

Only after acceptance and release do we start with the spindle repair.

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Spindle preparation

  • Cleaning using new, innovative cleaning technology with 1 µ filter technology
  • Chromium-plating/grinding of the bearing seats
  • Production of parts
  • Preparation of HSK/SK

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Spindle repair/optimization

We implement your spindle and optimize it:

  • Vibration reduction of the rotating components
  • Adjustment of the electrical and mechanical components
  • Technical optimization if necessary

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Test field and inspection

We test your spindle using the most modern test technology:

  • Mobile precision balancing of the spindle
  • Another leakage test
  • Testing of electrical and mechanical components
  • Individual test protocols (BCU-bearing values, vibration values, etc.)
  • Professional Dispatch

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Long-term advice

When your repaired spindle is successfully put into operation, that is just the beginning of the service provided by KERN: We advise you in the long term, give you technical support and are at your disposal for further inquiries and detailed information at any time.

We look forward to your call/inquiry

Request spindle repair

DMG / Kessler motor spindle repair in 5 working days

Our mission

This week we were able to repair a Kessler motor spindle from a DMG system for a large automotive supplier within five working days, including a new stator, overhauled clamping system and reworked tool mounting.
In conjunction with our machine service for DMG systems, we were able to offer the customer full service, including the installation of the spindle and a completely overhauled spindle equivalent to a new spindle.
Stadt, Germany

KERN quality – tested and approved

Since the year 2000, we have been ensuring our customers’ measurable success with spindle repairs, spindle services and spindle consulting. Spindles of all kinds are not only our business, but also part of our personal history: Spindle failure analyses as we know them today emerged in the 1990s with the involvement of our Managing Director, Markus Kern.

Ihre KERN Vorteile auf einen Blick

With all our services, you can rely not only on the highest quality, but also on 100% neutrality and short response times.

Insights and inspirations

Facts and figures

Others can say a lot, we can quantify a lot.
Here are our successes in numbers:
repaired spindles
per year
years of experience
locations worldwide

"If you have a question about spindles, just ask!"


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