CNC machines are precision investments. A good preventive maintenance (PM) schedule prevents unplanned downtime, keeps tolerances tight and extends the machine’s life. 🔧
Daily tasks (5 minutes)
- Check coolant level and concentration 💧
- Inspect hydraulic pressure
- Clean chips from the work area
- Check way-lube oil level
Weekly tasks
- Grease ball screws and linear guides
- Inspect tool holders and collets for wear
- Check spindle belt tension
- Verify door interlocks and safety switches
Monthly and quarterly tasks
| Task | Frequency | Who |
|---|---|---|
| Clean coolant tank & replace filter | Monthly | Operator |
| Check spindle runout | Monthly | Technician |
| Verify axis backlash | Quarterly | Technician |
| Backup control parameters | Quarterly | Technician |
| Replace hydraulic oil | Yearly | Service |
Document everything
Keep a maintenance log for each machine. If a fault appears, a complete history makes troubleshooting much faster. 📝
💡 Tip: ask your supplier for the recommended PM schedule in writing before you buy – a good supplier will provide one without hesitation.
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