Okuma Series Repair
Okuma VTM Vertical Turning Spindle Repair & Grinding
Okuma VTM vertical-turning spindles — VTM-65, VTM-100, VTM-120, VTM-180 — handle large, heavy chucked parts where vertical orientation simplifies workpiece loading. Table bearings see sustained axial load from heavy roughing cuts; the spindle proper sees cyclic radial load. The platform's thermal stability helps with long-cycle finishing work.
Models in this series we service
- VTM-65
- VTM-100
- VTM-120
- VTM-180
Common failure patterns
- Table bearing wear from sustained heavy-cut vertical turning.
- ATC reliability on milling-capable VTM builds.
- Swarf evacuation issues around the table affecting spindle-nose work.
- Hydraulic clamp pressure loss affecting bearing preload.
Lead time
Lead time depends on the model, the failure mode, and parts availability. Diagnostic is fast; full rebuilds run 3 to 5 weeks on most jobs. We scope each job individually rather than quoting a generic window.