Jonsered 521 chain size

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

The chain for your Jonsered 521

Which bar is on your saw?

15" bar

Pitch
.325"
Gauge
.058"
Drive links
64
  • Oregon J64
  • Same as Stihl 25RM3, Stihl 25RS3, Husqvarna H25
  • File 3/16"

16" bar

Pitch
.325"
Gauge
.058"
Drive links
66
  • Oregon J66
  • Same as Stihl 25RM3, Stihl 25RS3, Husqvarna H25
  • File 3/16"

18" bar

Pitch
.325"
Gauge
.058"
Drive links
72
  • Oregon J72
  • Same as Stihl 25RM3, Stihl 25RS3, Husqvarna H25
  • File 3/16"

20" bar

Pitch
.325"
Gauge
.058"
Drive links
78
  • Oregon J78
  • Same as Stihl 25RM3, Stihl 25RS3, Husqvarna H25
  • File 3/16"

Bar mount K095 or Z095

Buy this chain

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Oregon J64, 64 drive links

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

All bar lengths for the Jonsered 521
Chain for each bar length
BarPitchGaugeDrive linksChain
15".325".058"64J64
16".325".058"66J66
18".325".058"72J72
20".325".058"78J78

The Jonsered 521 takes .325" pitch, .058" gauge chain. Drive links by bar length: 15" bar 64, 16" bar 66, 18" bar 72, 20" bar 78.

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 a Jonsered 521 take?

The Jonsered 521 takes .325" pitch, .058" gauge chain. Drive links by bar length: 15" bar 64, 16" bar 66, 18" bar 72, 20" bar 78.

How many drive links is a Jonsered 521 chain?

It depends on the bar: 64 on a 15" bar, 66 on a 16" bar, 72 on a 18" bar, 78 on a 20" bar. The bar length is usually printed near the mount.

What bar fits a Jonsered 521?

A bar with the K095 or Z095 mount, in one of these lengths: 15", 16", 18", 20".

Other saws with the same chain

All saws that take J64 All saws that take J66 All saws that take J72

Related Jonsered saws

Every Jonsered model