Chain Pitch

Specification
Updated 2026-08-24 · Read this page as Markdown

The distance between any three consecutive rivets on the saw chain divided by two, expressed in inches. It is the dimension that must match the drive sprocket and the bar nose, and the common sizes are 1/4", .325", 3/8" (including 3/8" low profile) and .404".

Pitch describes how big the chain is: larger pitch means larger cutters, more aggressive cutting and a heavier chain, so small saws use 1/4" or 3/8" low profile while large felling saws use .404". It is not interchangeable — a .325" chain on a 3/8" sprocket will not run, and forcing a mismatch destroys both parts. When you buy a replacement chain you need three numbers together: pitch, Chain Gauge and the Drive Links count. All three are usually stamped on the bar itself, which is the most reliable place to read them.

This spec across the catalog

Recorded on 101 models in this database. Most common values:

  • 0.325 ×24
  • 3/8 ×23
  • 3/8" LP ×13
  • 0.375 ×12
  • 3/8" ×11
  • 3/8" mini ×5
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Related terms

Chain Speed The linear speed at which the chain travels around the guide bar, in metres per second, normally quoted at maximum engine speed. It is determined by engine rpm, the number of teeth on the drive sprocket and the chain pitch. Chain gauge The thickness of the drive link tang that rides inside the guide bar groove, given in inches. The common gauges are .043", .050", .058" and .063", and the chain gauge must match the bar exactly. Drive links The toothed links on the underside of the chain that engage the drive sprocket and run in the bar groove. Their count is what determines the chain's overall length for a given bar. Maximum Bar Length The longest guide bar, in centimetres, that the manufacturer approves for the saw. Fitting anything longer overloads the engine and clutch and usually voids the warranty. Raker (depth gauge) The small rounded projection immediately ahead of each cutter on the chain, which limits how deep that cutter can bite into the wood. The height difference between the raker and the cutter's top plate sets the chip thickness. Recommended Bar Length The guide bar length, in centimetres, that the manufacturer considers the best match for the saw's power. It is the length the machine is normally supplied with and the one that gives the best balance of cutting reach and cutting speed.

See also

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