Saw Chain Identification
Saw Chain Drive Link Number Identification Nearly all Oregon® saw chains are named by a part number made up of a number (see below), followed by one, two or three letters (see next page). Part number Examples: 72LPX, 91PX The Numbers: 72 LPX, 91 PX The numbers are stamped on the saw chain’s drive links and indicate the physical size of the saw chain (pitch and gauge).
Gauge
Chain Number
Pitch
in.
mm
25
1/4"
.050"
1.3
.325" Low Profile ™ 3/8" Low Profile ™ 3/8" Low Profile ™
80
.043"
1.1
90
.043"
1.1
91
.050"
1.3
.325"
.050"
1.3
20
.325"
.050"
1.3
95
21
.325"
.058"
1.5
22
.325"
.063"
1.6
72
3/8"
.050"
1.3
73
3/8"
.058"
1.5
75
3/8"
.063"
1.6
26, 58
.404" .404"
.058" .063"
1.5 1.6
27, 59, 68
48
Safety & Maintenance Manual
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