Oregon R34 chain: what it fits and what the code means

R34 is a 3/8" LP pitch, .043" gauge chain with 34 drive links. It fits 27 saws listed below.

What R34 is

Pitch
3/8" LP
Gauge
.043"
Drive links
34

The letter R is the chain type, the number 34 is the drive link count.

Buy this chain

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Check pitch, gauge and drive links on the listing before you order. How this works

Same length, different chain

The number is the length; the letter is the chain. These all have 34 drive links:

Codes with the same drive link count
CodeTypePitchGaugeFamily
R3490PX3/8" LP.043"AdvanceCut
S3491PX3/8" LP.050"AdvanceCut

S34: different pitch or gauge. Not a substitute for R34.

Saws that take R34

Black+Decker · 4

Ryobi · 2

DeWalt · 1

Kobalt · 1

Troy-Bilt · 1

Questions people ask

What does R34 mean on an Oregon chain?

R is the chain series (90PX, AdvanceCut: 3/8" LP pitch, .043" gauge). 34 is the number of drive links.

What bar length is R34?

Usually 8". What matters is the drive link count, 34: count the links on your old chain rather than going by the inches.

What file do I need for R34?

A 4.5 mm round file.