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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 facing page). OREGON® Part number Examples: 18HX, 72LPX, 91VG The Numbers: 18 HX, 72 LPX, 91 VG


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


11 16 18 20 21 22 25 26 27 58 59 68 72 73 75 90 91 95


Pitch in. 3/4"


.404" .404" .325" .325" .325" 1/4"


.404" .404" .404" .404" .404" 3/8" 3/8" 3/8" 3/8" 3/8"


.325" Saw Chain Letter Identification 


The letters: 18 HX , 72 LPX , 91 VG The letters represent cutter type and sequence, safety features, or other physical traits of the saw chain.


.122" .063" .080" .050" .058" .063" .050" .058" .063" .058" .063" .063" .050" .058" .063" .043" .050" .050"


Gauge


mm 3.1


1.6 2.0 1.3 1.5 1.6 1.3 1.5 1.6 1.5 1.6 1.6 1.3 1.5 1.6 1.1 1.3 1.3


10


SAW CHAIN


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