Chain Letter Identification - Oregon CHAINSAW Maintenance And Safety Manual

CHAIN LETTER IDENTIFICATION

The letters: 18 H , 72 LP , 91 VG
The letters represent cutter type and sequence, safety features, or other
physical traits of the chain.
AC Chipper Cutter,
Standard Sequence
AP Micro Chisel
Bumper Drive Link,
Standard Sequence
BC Chipper cutter with
standard sequence
(11BC only)
BP Low vibration Micro
Chisel Cutter,
®
Bumper Drive Link,
Standard Sequence
DP Semi-chisel Cutter, Bumper
Drive Link, Standard
Sequence
H Modified for Harvester
applications, Micro Chisel
or Semi-chisel cutters
with Standard Sequence
L Round-ground chisel cutters
with standard sequence
(.404" 58L & 59L)
LG Round-ground Chisel
Cutter, Ramped Depth
Gauge, Standard
Sequence. 33LG serie
chains are low vibrations
chains.
LP Low vibration Round-
ground Chisel Cutter,
Bumper Drive Link,
Standard Sequence
LX Power Sharp
Ramped Depth Gauge,
Bumper Drive Link,
Standard Sequence
(no hand maintenance
required)
SAW CHAIN
Cutter,
®
®
Chain,
®
SAW CHAIN SAW CHAIN
M Specially built chain with
round-ground chisel cutters
(M73, 75LP, M21,22LP)
and Bumper Drive Link or
chamfer-chisel cutter
(M91VS) and ramped
depth gauge for effective
cutting in extremely dirty or
abrasive conditions
R Ripping Chain, Chamfer-
chisel (91R) or Micro-chisel
(95R,27R) Cutter,
Standard Sequence
RA Ripping Chain, Micro-
chisel Cutter,
Skip Sequence
RD Ripping chain with semi-
chisel cutters and standard
sequence
SG Low vibration chamfer-chisel
cutters, ramped depth
gauge, bumper tie strap,
standard
narrow kerf design.
VG Low-vibration Chamfer-
chisel cutter, ramped depth
gauge, bumper tie strap,
standard sequence
VP Low-vibration Micro
Chisel™ cutter, ramped
depth gauge, bumper drive
link, narrow-kerf design
(95VP only)
VS Low-vibration Chamfer-
chisel cutters, ramped
depth gauge, standard
sequence (91VS only)
sequence,
9.