Oregon Maintenance and Safety Manual, MMANUAL-EN AB

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).

72 72 72 Chain Number

Gauge

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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