Royal spindle repair on MTcut V85

Bybmsserwis

Complete repair of the ROYAL spindle from the MTcut V85 machine

  • Spindle: ROYAL

  • Machine: MTcut V85

  • Spindle speed: 12,000 rpm

  • Taper: SK40

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.

During diagnostics we confirmed heavy wear of rolling elements and damage to the thrust surfaces in the bearing seats. A decision was made to perform a complete spindle repair.

ROYAL spindle repair – MTcut V85, SK40, 12,000 rpm

ROYAL spindle repair step by step
ROYAL spindle repair – MTcut V85

1. Removal and condition assessment
The spindle was safely removed by the Maintenance Department in line with our guidelines. After delivery to our service, a detailed assessment of damage and bearing seizure was performed.
2. Disassembly and cleaning
The spindle interior was disassembled and all components thoroughly cleaned of grease residues and chips — a key stage that reveals micro-damage not visible at first glance.
3. Bearing replacement
The worn bearing set was replaced with new full-ceramic bearings, providing top thermal resistance and minimal friction. This ensured very stable operating parameters and smooth running even at maximum speeds.
4. SK40 taper restoration
The tool taper was restored to nominal geometry to ensure perfect tool seating and machining accuracy. Concentricity was verified after the repair.
5. Tool clamping system service
All clamping components were disassembled, cleaned and inspected. Belleville springs and guide sleeves passed dimensional checks; the entire system was then calibrated to achieve the correct tool clamping force as per ROYAL spindle specification.
6. Assembly and final testing
The spindle was assembled under controlled conditions and then underwent dynamic tests — runout measurement, temperature control and full-speed trial. Results confirmed full unit readiness.
7. Support during reinstallation
The client’s MTcut V85 machine was re-equipped with the spindle by the Maintenance Department under our remote supervision. The instructions covered assembly sequence, tightening torques and final in-machine calibration.
Complete ROYAL spindle repair – MTcut V85, SK40, 12,000 rpm ROYAL spindle balancing – MTcut V85, 0.4G class

Project summary
key findings and results

  • Cause and decision: stoppage due to bearing seizure; decision to perform a full repair.
  • Removal/Installation under supervision: work carried out by the client’s Maintenance Department with BMS phone guidance (sequence, torques, safety).
  • Internal service scope: complete disassembly and cleaning, replacement of the entire bearing set with full-ceramic, SK40 taper restoration, and tool clamping force calibration.
  • Assembly and verification: assembly under controlled conditions, full-speed testing, runout and temperature measurements — results within tolerance; support for the first start-up on MTcut V85.
  • Result and recommendations: parameters restored (up to 12,000 rpm), stable operation and production readiness; delivered maintenance guidelines and documentation (clamping force checks, periodic taper inspection, clean tool seat).

Frequently asked questions
ROYAL spindle repair / MTcut V85

Usually 3–5 business days from approval. The cost depends on scope (bearings, taper, clamping system). After an initial call we provide a range, and after diagnostics — a firm quote before we start.
In most cases yes. ROYAL spindle repair shortens downtime; the price is typically 25–40% of a new unit. You receive a warranty and a test report.
Removal can be done by the client’s maintenance team, while BMS provides step-by-step phone guidance (sequence, torques, post-removal checks). On-site help is also possible — agreed individually.

Need ROYAL spindle repair?
Contact us

Do you need ROYAL spindle repair (MTcut V85, SK40, 12,000 rpm) — with full-ceramic bearings, taper restoration and clamping force calibration? BMS Spindle Service will guide you through safe removal and installation and restore the spindle to full working order.

Similar Posts

KESSLER Spindle Repair on DMG CMX 1100 V

KESSLER Spindle Repair on DMG CMX 1100 V

Bybmsserwis
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.
FANUM Machine Electrospindle Repair – HSD ES350L

FANUM Machine Electrospindle Repair – HSD ES350L

Bybmsserwis
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.
CHIRON FZ 18 W Spindle Service – Full Warranty

CHIRON FZ 18 W Spindle Service – Full Warranty

Bybmsserwis
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.
Detailed view of KENTURN spindle being removed

KENTURN KC1508H Spindle Repair

Bybmsserwis
Repairing the KENTURN KC1508H spindle is a key process aimed at restoring its full operational performance. As part of our comprehensive service, we handle disassembly, repair, and reinstallation of the spindle into the customer’s machine. Each stage is carried out in accordance with the highest precision standards, ensuring long-lasting durability and reliable spindle performance.
OKUMA M560 Electrospindle Repair – Complete Overhaul Process

OKUMA M560 Electrospindle Repair – Complete Overhaul Process

Bybmsserwis
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.