Oregon PS250 chain size

Chainsaw drawing: the bar and chain are the parts this page is about

The chain for your Oregon PS250

8" bar

Pitch
3/8" LP
Gauge
.043"
Drive links
34
  • Oregon R34
  • Same as Stihl 61PMM3
  • File 4.5 mm

The Oregon PS250 with an 8" bar takes 3/8" LP pitch, .043" gauge chain with 34 drive links (Oregon R34).

Bar mount A041

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

Check the chain on your saw

Drawing: pitch is the distance between three rivets divided by two
Pitch Measure across three rivets and divide by two. Common pitches are 1/4", .325", 3/8" and .404".
Drawing: gauge is the thickness of the drive link in the bar groove
Gauge The thickness of the drive link that rides in the bar groove: .043", .050", .058" or .063".
Drawing: count the drive links, the tabs under the chain
Drive links Lay the chain flat and count the tabs underneath. Mark one with a paint pen so you know where you started.
Find pitch and gauge from the number on a drive link
Type the number on a drive link
See all stamp numbers
Drive link stamp number to pitch and gauge
StampPitchGauge
113/4".122"
16.404".063"
18.404".080"
20.325".050"
21.325".058"
22.325".063"
251/4".050"
26.404".058"
27.404".063"
33.325".050"
34.325".058"
35.325".063"
50.404".050"
51.404".058"
52.404".063"
58.404".058"
59.404".063"
68.404".063"
723/8".050"
733/8".058"
753/8".063"
80.325" LP.043"
903/8" LP.043"
913/8" LP.050"
95.325".050"

Questions people ask

What size chain does an Oregon PS250 take?

The Oregon PS250 with an 8" bar takes 3/8" LP pitch, .043" gauge chain with 34 drive links (Oregon R34).

What bar fits an Oregon PS250?

A bar with the A041 mount, in one of these lengths: 8".

Can I use a chain with the same length but different pitch?

No. Pitch and gauge have to match the bar and sprocket, and the drive link count has to match the bar. A chain that is off on any of the three will not fit or run safely.

Other saws with the same chain

All saws that take R34

Related Oregon saws

Every Oregon model