How Often Do You Replace Robot Mower Blades?
TL;DR: Replace blades every 1-3 months during active mowing season. Signs you need new blades: grass tips look torn or brown instead of cleanly cut, the lawn looks ragged 24 hours after mowing, or you can see visible nicks on the blade edges.
Replace blades every 1-3 months during active mowing season. Signs you need new blades: grass tips look torn or brown instead of cleanly cut, the lawn looks ragged 24 hours after mowing, or you can see visible nicks on the blade edges. Most robot mowers use small, inexpensive disc blades that cost $10-25 for a pack of 9-12.
The UBHome M10 uses a 3-blade cutting disc. Blade replacement takes under 5 minutes with no tools. Budget $25-50 per season for blades.
| Blade Type | Replace Every | Cost Per Set | Annual Cost |
|---|---|---|---|
| Razor disc (3-blade) | 1-2 months | $15-25 | $45-75 |
| Star blades | 2-3 months | $10-20 | $30-60 |
| Fixed blades | 3-6 months | $20-35 | $40-70 |
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