Why Chainsaw Chain Falls Off: Explained by Arborists
Learn why chainsaw chains derail from bar and how to prevent dangerous throw-offs with certified arborist guidance.
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Chainsaw Resource Collection
Saw Chain
The saw chain is the cutting component of a chainsaw — a loop of drive links, tie straps, and cutting teeth that rotates around the guide bar to make cuts through wood. Chain selection, condition, and tension are among the most important factors affecting chainsaw performance, cut quality, and user safety. A dull, stretched, or incorrectly tensioned chain increases kickback risk, reduces cutting efficiency, and accelerates bar and sprocket wear. This collection covers chain anatomy, pitch and gauge specifications, sharpening technique, tensioning, wear assessment, and how to select the right chain type for different cutting applications.
Reference Notes
- A properly sharpened chain should cut with minimal downward pressure — if you need to force the saw, the chain needs sharpening.
- Chain pitch must match the drive sprocket and guide bar nose — mixing incompatible components causes rapid wear and increases kickback risk.
- The cutter geometry — raker depth and filing angle — determines how aggressively the chain cuts and must be maintained consistently when sharpening.
Saw Chain Guides
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