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Milling & turning spindles, OSP control spindle motors, belt and direct-drive units — rebuild, bearing swap, encoder repair.
Okuma spindle repair →
Germany · Precision Repair · All Manufacturers
CNC Spindle Repair &
Service for Every
Machine Brand
From high-speed milling spindles to heavy-duty lathe spindles — our German workshop diagnoses, rebuilds and balances spindles for machines from Okuma, Fanuc, Mazak, DMG Mori, Haas, Siemens and every other major manufacturer, and stands behind the work we do. On-site service across Europe or ship it straight to us.
1Business-Day Response
ISO 21940Balancing Standard
WorldwideSpindle Shipping
Machine Manufacturers
We Service Spindles From Every Major Brand
Select a manufacturer to see spindle types and typical repairs we handle for that brand, or browse the full list below. No brand on the list? We service spindles from virtually every make of CNC machine tool — just get in touch.
Showing: All Brands
Fanuc
Built-in motor spindles and BT/HSK toolholder spindles — rewind, taper regrind, dynamic balancing to ISO G0.4/G1.
Fanuc spindle repair →Mazak
Multi-tasking & turn-mill spindle rebuilds, live-tool spindles, high-speed grinding spindles for Integrex platforms.
Mazak spindle repair →DMG Mori
SprintZ and speedMASTER spindle overhauls, torque motor spindles, 5-axis head spindle alignment and repair.
DMG Mori spindle repair →Haas
VF-series and lathe spindle cartridge rebuilds, belt-drive and vector-drive spindle motor repair, drawbar service.
Haas spindle repair →Siemens
1PH/1FE torque motor spindle service, Sinumerik-controlled spindle drive diagnostics and encoder replacement.
Siemens spindle repair →Heidenhain
Encoder calibration and integration for TNC-controlled spindle systems, feedback signal diagnostics and repair.
Heidenhain spindle repair →Doosan
Puma & Lynx lathe spindle rebuilds, built-in motor spindle rewinding and precision bearing replacement.
Doosan spindle repair →Hurco
Vertical machining center spindle cartridge exchange, gearbox and belt-drive spindle overhaul.
Hurco spindle repair →Brother
High-speed tapping center spindle rebuilds, compact BT/HSK spindle bearing and seal replacement.
Brother spindle repair →Makino
High-precision graphite & mold-die spindle service, ceramic bearing replacement, ultra-fine balancing.
Makino spindle repair →Mitsubishi
EDM & machining center spindle drive repair, motor rewind and control integration.
Mitsubishi spindle repair →Grob
5-axis universal machining center spindle head overhaul and geometric alignment restoration.
Grob spindle repair →Hermle
High-precision milling head spindle rebuild, thermal-stability bearing preload adjustment.
Hermle spindle repair →Toyoda
Grinding spindle precision rebuild, hydrostatic and hydrodynamic spindle bearing service.
Toyoda spindle repair →Not on the list? We also regularly service spindles from Chiron, Matsuura, Kitamura, Fadal, Deckel Maho, Emco, Star, Citizen, Index, Gildemeister and many other manufacturers — get in touch with your machine model.
About Our Workshop
Independent CNC Spindle Repair — Workshop Based in Germany
We are a specialized, manufacturer-independent workshop dedicated entirely to the repair, rebuild and maintenance of CNC machine tool spindles.
Every spindle that comes through our doors — whether it is a compact tapping-center spindle from a small job shop or a heavy-duty turning spindle from a production line — receives the same disciplined process: full diagnostics, precision measurement, careful disassembly, and a rebuild that is checked against tight tolerances before it ever leaves our facility. We do not cut corners on bearings, balancing or documentation, because a spindle that fails again in three months costs our customers far more than the repair itself.
Unlike a machine tool dealer or a single-brand service center, we are not limited to one manufacturer's parts catalog or service network. Our technicians have hands-on experience across the full spectrum of CNC spindle technology — belt-driven, direct-drive and built-in motor spindles, mechanical and hydrostatic bearing systems, and control interfaces from Siemens, Fanuc, Heidenhain, Mitsubishi and other major suppliers. That breadth means we can take on spindles that other shops turn away, including older or discontinued models that no longer have OEM support.
Our workshop is based in Germany, giving customers throughout Central and Western Europe fast access to on-site diagnostics and installation, along with reliable freight connections for shipping spindles to and from our facility. Whether your production line is in Munich, Milan, Lyon or Rotterdam, our team can typically be on-site within days, and spindles shipped to our workshop are logged, inspected and quoted quickly so your machine is back in production with minimal delay.
We work with CNC machine shops, automotive suppliers, aerospace manufacturers, tool and die makers, and machine tool resellers who need a dependable partner for spindle work — whether that means a single emergency repair, an ongoing maintenance contract, or a fleet of exchange spindles kept in stock to keep downtime to a minimum.
Coverage
Spindle Types We Work On
From high-speed machining centers to heavy-duty lathes and precision grinders, we cover the full range of spindle designs found in modern CNC equipment.
Milling Spindles
Vertical and horizontal machining center spindles, from belt-driven units to high-speed built-in motor spindles running above 20,000 RPM.
Turning & Lathe Spindles
Main and sub-spindles for CNC lathes and turning centers, including live-tool and multi-tasking spindle assemblies.
Grinding Spindles
High-precision hydrostatic and hydrodynamic grinding spindles rebuilt to ultra-fine runout and balance tolerances.
Drilling & Tapping Spindles
Compact high-speed spindles for tapping centers and drilling heads, including multi-spindle drilling units.
Built-In Motor (Electro) Spindles
Integrated rotor/stator spindle motors requiring specialized rewinding, insulation and thermal management expertise.
5-Axis & Angle Head Spindles
Complex swivel-head and angle-head spindle assemblies for 5-axis machining centers, including bevel gear service.
EDM & Wire-Cut Head Spindles
Precision spindle and guide-head service for wire and sinker EDM machines, including flushing seal and bearing rebuilds.
Wood & Composite Router Spindles
Air- and water-cooled router spindles for CNC woodworking and composite panel cutting, including collet and seal service.
Symptoms We Diagnose
Common Spindle Problems We Fix
Not sure whether your spindle needs a full rebuild or a minor repair? These are the issues we see most often — get in touch and we'll help you figure out which one applies.
Unusual Noise or Grinding
Often a sign of worn or damaged bearings, contamination, or a loose internal component — best addressed before it damages the housing.
Bearing replacement →Excessive Vibration
Usually caused by rotor imbalance, bent shafts or bearing wear — corrected through precision dynamic balancing and part replacement.
Dynamic balancing →Overheating
Blocked cooling channels, degraded lubrication or winding faults raise spindle temperature and shorten bearing life if left unresolved.
Bearing replacement →Poor Surface Finish & Runout
Taper wear or bearing play increases runout, degrading part quality — corrected with taper regrinding and bearing replacement.
Taper and runout correction →Oil or Grease Leakage
Worn seals allow lubricant loss and contamination — replaced during a full teardown and rebuild.
Housing repair and regrinding →Spindle Drive & Encoder Faults
Speed feedback or encoder errors on the control display, resolved through electrical diagnostics and sensor replacement.
Encoder and sensor repair →Tool Clamping / Drawbar Issues
Weak or inconsistent tool clamping force, often caused by worn disc springs or a faulty drawbar mechanism inside the spindle.
Diagnostics and inspection →Sudden Seizure or Total Failure
Complete lock-up from bearing collapse or catastrophic contamination — usually requires full teardown and rebuild.
Diagnostics and inspection →What We Repair
Complete CNC Spindle Repair & Service Program
Whatever the fault — worn bearings, burnt windings, runout, chatter, noise, overheating, or a total seizure — our workshop covers the full scope of spindle repair and service work under one roof, for milling, turning, grinding and drilling spindles alike.
Diagnostics & Testing
Vibration analysis, thermal imaging, runout measurement and full electrical testing to pinpoint the exact cause of failure before any repair begins.
Diagnostics and inspection →Bearing Replacement
Precision-matched angular contact, cylindrical and hybrid ceramic bearings fitted with the bearing preload determined for the specific spindle type for smooth, quiet running.
Bearing replacement →Rotor & Stator Rewinding
Full electrical rebuild of built-in motor spindles, including rotor re-sleeving, stator rewinding and impregnation for maximum thermal stability.
Motor rewinding →Dynamic Balancing
Two-plane dynamic balancing to ISO 21940 grade G0.4–G1, for minimal residual unbalance at operating RPM for superior surface finish and bearing life.
Dynamic balancing →Encoder & Sensor Repair
Replacement and calibration of rotary encoders, temperature sensors and speed feedback devices for accurate CNC control communication.
Encoder and sensor repair →Housing Repair & Regrinding
Precision grinding of housing bores, seat repair, sleeve installation and corrosion remediation to restore original geometric tolerances.
Housing repair and regrinding →Taper & Runout Correction
BT, CAT, HSK and ISO taper regrinding and runout correction to sub-micron tolerances for consistent tool clamping accuracy.
Taper and runout correction →Preventive Maintenance
Scheduled inspection programs, lubrication service and early-wear detection to extend spindle life and avoid unplanned downtime.
Spindle Exchange & Loaner Program
In individual cases we can send out a rebuilt unit while yours is in the workshop — only where a suitable spindle is on hand and the exchange has been agreed in advance. Ask us before you plan around it.
Retrofit & Upgrade
Upgrade older spindles with modern bearings, improved cooling jackets and higher-grade balancing and, where technically sensible, components that go beyond the original build.
On-site Installation & Commissioning
Our technicians travel to your facility for spindle installation, alignment, geometric checks and full machine commissioning.
On-site installation and commissioning →Emergency Support
Unplanned spindle failure halts production. For urgent cases, contact us during business hours and we'll prioritize your request.
How It Works
Our Spindle Repair Process
A clear, structured sequence from first contact to a spindle back in production — every unit is tracked through the same quality-controlled workflow.
1
Inquiry & Diagnosis
Send us your spindle model, symptoms or photos. We come back to you with an initial assessment and a written quote before any work begins.
2
Quotation
After inspection we issue a fixed, transparent quote covering parts, labor and estimated turnaround time.
3
Disassembly & Inspection
Full teardown, cleaning and component-level inspection to confirm the complete scope of work.
4
Repair & Rebuild
Bearing, winding, housing and seal work carried out by our experienced technicians to the specification agreed for your spindle.
5
Testing & Balancing
Dynamic balancing, run-in testing and vibration measurement at full operating RPM before sign-off.
6
Shipping & Installation
Secure packaging and delivery, or on-site installation and commissioning by our own technicians.
Why CNC Spindle Service
Precision, Speed and Accountability
We built our reputation on doing the job right the first time — with the documentation and testing data to prove it.
German Engineering Precision
We measure with regularly calibrated precision instruments and document the values achieved for each spindle in the test report.
Independent, All-Brand Workshop
Not tied to a single OEM — we source and machine parts for virtually any spindle brand or model.
Fast Turnaround
Standard repairs typically take around 5–10 business days, with expedited options available for urgent cases.
Loaner & Exchange Spindles
Keep your machine running with a rebuilt exchange unit while yours is being serviced.
Full Test Report with Every Repair
Every repair ships with balancing data and test results, and is covered by our 12-month liability for defects.
On-site Across Europe
Our technicians travel to your facility for installation, alignment and commissioning wherever you are.
Full Traceability & Reporting
Every job is logged with photos, measurements and balancing data, so you always have a clear record of what was done and why.
Insured, Tracked Shipping
Spindles are crated and insured for transit, with tracked door-to-door logistics across Europe and beyond.
Where We Work
Serving Clients Across Europe & Beyond
Based in Germany, our team regularly travels for on-site diagnostics and installation, and we ship rebuilt spindles worldwide via secure freight partners. The countries below are where we work most often — but we ship to and support clients in any country, so don't hesitate to reach out no matter where you're based.
Home Base
Western & Central Europe
Southern & Northern Europe
International
Countries and regions
Don't see your country listed? That's fine — we regularly ship spindles and coordinate on-site work well beyond this list. Wherever your machine is, get in touch and we'll work out the logistics.
Our Workshop
Spindle Repair in Progress
How a spindle repair runs — diagnostics, precision bearing work and dynamic balancing on spindles from a wide range of machine brands.
CNC spindle repair process.
Questions & Answers
Frequently Asked Questions
Everything you need to know about sending us a spindle, on-site service and what to expect during a repair.
We repair and rebuild spindles for all major CNC machine manufacturers — Okuma, Fanuc, Mazak, DMG Mori, Haas, Siemens, Heidenhain, Doosan, Hurco, Brother, Makino, Mitsubishi, Grob, Hermle, Toyoda and many more. If your brand isn't listed, contact us with the model and we'll confirm.
Standard repairs typically take 5–10 business days from receipt of the spindle, depending on parts availability and scope of work. Expedited turnaround and our emergency loaner program can significantly reduce your downtime.
Yes. Our technicians travel to customer facilities worldwide — most commonly across Germany and Europe — for diagnostics, installation, alignment and commissioning. Alternatively, you can ship your spindle directly to our workshop in Germany.
Our repairs are covered for 12 months from acceptance under our terms — our workmanship and the parts we install. The exact scope of work is set out in your quote. Every unit is dynamically balanced and run-in tested before it leaves the workshop and ships with a test report.
Contact us first for a quote and shipping instructions. We provide guidance on safe packaging, and can arrange freight collection from your facility anywhere in Europe.
Beyond Germany, we regularly serve customers throughout Austria, Switzerland, France, Italy, Poland, the Netherlands, Belgium, the Czech Republic, Spain, Sweden, Denmark and Turkey, plus international clients including the United States and the UAE.
Get In Touch
Request a Spindle Repair Quote
Tell us about your machine and the issue you're experiencing — we'll come back with a diagnosis plan and a fixed quote.
Contact Details
Workshop AddressUferstraße 9, 53757 Sankt Augustin, Germany
Phone+49 2686 9886926
HoursMon–Fri, 08:00–18:00 CET/CEST
Two ways to work with us:
1. We come to you — our technicians travel on-site worldwide, most commonly across Germany and Europe, for diagnostics, installation and commissioning.
2. You ship to us — send your spindle to our German workshop and we handle the full repair and return shipping.