Terminology; Saw Chain Pitch; Saw Chain Gauge - Oregon Harvester Handbook

Saw Chain

Terminology

OREGON
18X

Saw Chain Pitch

Saw chain pitch is the distance between any three consecutive
rivets, divided by two . Oregon Harvester saw chain is available in
both .404" and 3/4" pitch .

Saw Chain Gauge

Saw Chain Gauge is the term used to describe the thickness of the
drive link tang, which fits into the groove of the guide bar .
Oregon Harvester saw chain gauges are:
• 0 .080" (2 .0 mm)
Oregon has an 18X or 19X stamped on the drive link tang .
• 0 .122" (3 .1 mm)
Oregon has an 11 stamped on the drive link tang .
Ensure you use the correct recommendations for your saw chain
(refer to the tables that follow) .
A . Top plate angle
B . File guide angle
19
÷ 2
OREGON
18X
Tang
C
N
o
C . Top plate cutting angle
D . Depth Gauge Setting
Mechanical Timber Harvesting Handbook
18X
A
N
o
25 = .025"
30 = .030"
50 = .050"
60 = .060"
B
D