How long does a standard electro-spindle repair take?
Average turnaround time for electro-spindle servicing.
Comprehensive electro-spindle repair usually takes 7–14 working days; in express mode it can be completed in 48–72 h.
The electro-spindle is a critical component of every CNC machining centre. Fumak provides comprehensive electro-spindle repair, restoring factory parameters and maximum performance.
We service dozens of electro-spindle models from renowned manufacturers of CNC metalworking equipment, including:
The list of supported devices is constantly growing thanks to modern measurement facilities and the many years of experience of Fumak specialists.


Our CNC electro-spindle repair is an advanced service process that includes precise replacement of high-grade ceramic bearings, new seals and accurate calibration of speed encoders. This restores full performance and stability, even at extreme rotational speeds.
Every spindle repair starts with a detailed technical audit – the mechanical-optical inspection detects micro-damage, taper irregularities, bearing clearance, misalignment or excessive wear of rolling and guiding elements.
As part of the repair we also service additional spindle systems: servicing of liquid and air cooling circuits, cleaning and maintenance of drawbar actuators, calibration of HSK, ATC and measurement-system sensors. We guarantee full integration and trouble-free operation once the spindle is installed in the machine.
After all repair work is completed, we carry out static-dynamic balancing to ISO class G2.5 or G4 (depending on spindle type), which minimises vibration and extends bearing life. Each repaired spindle is supplied with a complete service report including measurement documentation and a quality certificate.
Average turnaround time for electro-spindle servicing.
Comprehensive electro-spindle repair usually takes 7–14 working days; in express mode it can be completed in 48–72 h.
Typical symptoms of CNC electro-spindle failure.
High-frequency squealing, temperature above 60 °C, excessive vibration, reduced machining quality and sudden spindle stops – these are signals that servicing is required.
Estimated price range for CNC electro-spindle repair.
Refurbishment of electro-spindles with speeds up to 24,000 rpm costs PLN 15,000–25,000 net. High-speed units (40,000+ rpm) cost PLN 25,000–45,000 net.
Warranty parameters after electro-spindle repair.
We normally provide 12 months or 4,000 operating hours. With full refurbishment, a warranty of up to 18 months is possible.
Scope of activities in the basic service package.
Disassembly, diagnostics, replacement of bearings, seals, sensors, taper grinding, 4G dynamic balancing, bearing tests and measurement protocol.
Preventive steps to minimise downtime risk.
Regularly monitor temperature, clamp force, lubrication condition, vibrations and replace coolant filters. Scheduled maintenance every 2,000 operating hours greatly extends service life.
Cost comparison between refurbishment and purchase of a new unit.
Refurbishment usually costs only 25–35 % of the price of a new electro-spindle; with factory parameters preserved and shorter lead times, it is considerably more economical.
By choosing Fumak you gain:
