Nina Frei is Senior Maintenance Engineer at Bergwerk Präzision AG. Ask Nina about: spindles, calibration, machine vendor contacts.
Open actions
- Prepare the spindle bearing swap for the retrofit window (due 30.10.2026) · Line 3 retrofit · from Weekly production meeting
- Hand over the sensor alarm thresholds to Lukas Brunner (due 13.11.2026) · Line 3 retrofit · from Line 3 retrofit: check-in before the stop
- Record a short video of the calibration with the reference mandrel (due 20.11.2026) · Line 3 retrofit · from Knowledge handover: Nina Frei, maintenance
Decisions
- 20.04.2026 · Retrofit Line 3 instead of buying a new machining centre
- 20.04.2026 · Fit vibration sensors on all four spindles of Line 3, so bearing wear shows up before a…
- 18.05.2026 · Replace the bearings on all four spindles of Line 3 during the retrofit window, not one…
- 14.09.2026 · The Line 3 retrofit window is 02.11.2026 to 13.11.2026; Line 3 restarts on 16.11.2026
- 19.10.2026 · Spindle checks on Line 3 happen every month and after every crash, using Nina's five…
- 28.10.2026 · Line 3 runs at 80 % feed rate in the first week after the restart
Done actions (2)
- Done: Add the vibration readings to the maintenance log (due 29.05.2026) · Line 3 retrofit · from TCK-0412: Line 3 spindle 2 vibration and surface marks
- Done: List the spare parts to stock before the retrofit (due 30.09.2026) · Line 3 retrofit · from Line 3 retrofit: planning meeting
Projects
Mentioned in
- 12.01.2026 · Staff directory: Bergwerk Präzision AG
- 20.04.2026 · Line 3 retrofit: planning meeting
- 18.05.2026 · TCK-0412: Line 3 spindle 2 vibration and surface marks
- 14.09.2026 · Weekly production meeting
- 12.10.2026 · Onboarding note: your first week in production
- 19.10.2026 · Knowledge handover: Nina Frei, maintenance
- 26.10.2026 · ISO 9001 recertification: audit preparation
- 28.10.2026 · Line 3 retrofit: check-in before the stop