KENTURN KC1508H Spindle Repair

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.

Our CNC service received as many as three HSD ES 959L electrospindles designated for operation in a machining center ROVER B. Two of them were sent as damaged units, while the third one was marked by another service as “beyond repair” and intended as a donor for spare parts.

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 electrospindle was collected directly from the customer, located approximately 200 km from our service center. On the same day, we carried out a damage analysis and identified severe damage to the HSK taper gripper arms, as well as significant vibrations and loud operation of the rear bearings.

HEIAN spindle repair is a key process in restoring full functionality of CNC machining center spindles. Due to intensive use, components such as bearings and tool tapers wear out over time, affecting the precision and efficiency of the machine. At our service center, we specialize in comprehensive HEIAN spindle repair, restoring full performance in a short turnaround time. Below we present the main stages of the HEIAN spindle repair process.

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.