Large-Scale Spindle Repair EMAG

A DOOSAN spindle arrived for service after a severe collision with the 5-axis table. The symptoms were clear: noisy bearings and high radial runout, which prevented stable machining. In this kind of machine everything is decided at very small values — every micron countsFrom the start we agreed with the customer on a fast approach. After disassembly at the customer’s site, we collected the spindle directly, door-to-door to shorten downtime and avoid additional transport risk. The maintenance department on the customer’s side did a great job: quick decision, tidy workstation, complete incident information. Thanks to that we could get to work immediately.

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 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.

The spindle in the HAAS VM-2 operates at high speeds and loads, where every micron matters for surface quality, tool life and process stability. In this job the goal was a full HAAS spindle repair with restoration of the SK40 taper geometry and achieving the lowest possible runout at an L-300 test length. After completion we confirmed runout below 2 µm on the test bar and 1–2 µm directly on the taper—values typical of a premium, like-new spindle.

At our service center, we carried out a comprehensive repair of a WEING spindle from a WEING Powermat 1500 planer, which arrived in exceptionally poor technical condition. Below, we present the details of the work performed.

After receiving the spindle, we began disassembly and cleaning of all components. Each part was cleaned in ultrasonic and mechanical baths, which allowed us to carry out precise geometric measurements and damage diagnostics.