1. Dimension 1 — Consumables
High usage, low cost → must stock enough
These are used every day.
You should keep 3–6 months of stock on site.
✅ Key Consumables
- Oscillating blades
Different materials need different blade types.
Ask your supplier for the correct model before stocking. - Cutting mats / underlay sheets
Normal lifetime: about 1 year
Prepare at least 1 spare to avoid downtime.
Simple rule:
Weekly usage × 12–24 weeks = Correct purchase quantity
2. Dimension 2 — Wear Parts
Medium cost, predictable replacement cycle
These parts last longer but will wear out after continuous use.
🔧 Key Wear Parts
- Lubricating oil / low-density pneumatic oil
Used on pneumatic oscillating tools - Bearings inside high-speed tools
(High-frequency EOT / Milling spindle) - Belts
Especially W-axis rotary belts - Blade holders and screws
Small parts that must always remain tight and secure
🛠️ Tip:
Replace before failure → avoids emergency shutdown
| Wear Part | Expected Lifetime | Recommendation |
|---|---|---|
| Blade holder screws | 3–6 months | Keep 10–20 pcs |
| High-frequency tool bearings | 6–12 months | Replace yearly |
| Pneumatic oil | Monthly | Always in stock |
| W-axis belt | 12–18 months | 1 spare per machine |
3. Dimension 3 — Critical Components
Low failure rate, but high risk
If one fails → Production stops immediately.
🚨 High-Priority Spare Parts
- Limit switches / sensors
(We recommend Omron brand) - Servo motor encoder cables
- Control relays and fuses
- Vacuum solenoid valves
- Pneumatic regulators and connectors
- Oscillating knife cutting tool assemblies
(Having one ready saves days of downtime)
⚠️ Just one broken sensor can shut down your 50,000 USD machine.
✅ Always keep at least 1 spare of each critical part
4. How Many Spares Do YOU Need?
Spare kit size depends on usage level:
| Factory Type | Spare Strategy |
|---|---|
| Small batch / Low usage | 1–2 months consumables + basic wear parts |
| Medium factory | 3–6 months consumables + full wear part set |
| High-volume / 24/7 production | Full spare kit + backup critical parts |
If your delivery time matters → your spares must be ready.
5. Why Keep Spare Parts on Site?
- Shorter delivery time
- Lower shipping cost when ordered with the machine
- No stress when something fails
- Zero emergency downtime
✅ Recommendation:
Order your spare kits together with the machine shipment
6. Conclusion
Spare parts = guaranteed production
Good planning = zero surprise downtime
At AMOR CNC, we provide customized spare kits based on:
- Your specific industry
- Your materials
- Your production volume
Final reminder:
A $10 spare part should NEVER stop a $50,000 cutting machine.
