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We carried out a full repair of a powerful Mori Seiki NH8000 spindle with an HSK A100 taper and a working speed of 8,000 rpm. The scope of work included the replacement of precision bearings, taper grinding, cooling system cleaning and safe door-to-door transport.

The FISCHER MFW-1224/42 VC HSK-E40 electrospindle operates in very demanding conditions: rotational speed up to 42,000 rpm, HSK-E40 tool interface and a high-precision SPEED HAWK 650 machining center. Under such parameters even minor wear of the bearings, taper or clamping unit quickly leads to reduced surface quality, increased vibration and shorter tool life.

A spindle from the CHIRON FZ 18 W machining center arrived at our service. Two issues were reported: no tool clamping and a worn SK40 taper. This combination typically indicates wear of several components at once: the drawbar mechanism, bearings and the taper itself. We took over the entire process – from removing the spindle from the machine to reinstalling it in line with the CHIRON procedure. Thanks to this the customer has one point of contact, one report and full responsibility on our side.

A ROYAL spindle working in a MTcut V85 machining center arrived at our service. The unit with a speed of 12,000 rpm and SK40 taper failed due to bearing seizure. The spindle was immediately removed by the client’s Maintenance Department, and the entire process was supervised and instructed by BMS Spindle Service specialists.

The complete overhaul of the KESSLER spindle in our workshop restored factory precision and process stability to the DMG CMX 1100 V. We delivered a comprehensive service scope including bearing replacement, SK40 taper restoration, installation of a brand-new OEM drawbar assembly, sensor calibration, and replacement of all seals. Additionally, we supported the customer during self-installation of the spindle and helped eliminate the root cause of the previous coolant ingress. The service is covered by a 12-month warranty.

An HSD ES350L electrospindle from a FANUM machine arrived at our service center. The unit reported increased noise and noticeable vibrations at higher speeds. These are classic symptoms of high-speed bearing wear and a weakened tool drawbar. In such cases, a rapid, precise repair is crucial because every hour of machine downtime means real production costs.

A machining center OKUMA Genos M560 arrived at our service with spindle wear symptoms: increasing noise at high speeds, noticeable vibrations, and occasional alarms during tool changes. Our goal was to restore stable operation, repeatability, and full speed parameters. Below we present the course of the OKUMA M560 electrospindle regeneration as a completed case study.

A SCM 2936230015L spindle with HSK 63F taper and up to 24 000 rpm reached our service. The customer faced an unplanned downtime, so the job was marked as urgent — the priority was to restore full functionality fast. The entire process — from pickup to return — was completed in 4 days, minimizing production losses to the absolute minimum.

A spindle from a machining center DMG MORI arrived at our service. It is a KESSLER inlineMASTER unit with an ISO40 taper and a maximum speed of 18 000 rpm. The customer reported increasing noise at higher speeds, noticeable vibration during milling and occasional problems with tool retention. After a short interview about the machine’s operation, we proceeded to full diagnostics.

The scope covered a full HOMAG spindle overhaul from a BIZ 411 machine, rated for 24,000 rpm and using an HSK 63F taper. It included comprehensive diagnostics, replacement of ceramic (hybrid) bearings, precision dynamic balancing, and HSK 63F drawbar rebuild and calibration. The entire process was organized on an expedited basis — delivery and on-site installation the next day after service completion. HOMAG electrospindles are our specialty — we know their construction down to the smallest detail.