Stihl MS 461 R chain size

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

The chain for your Stihl MS 461 R

Which bar is on your saw?

Which chain is on it now?

18" bar

Pitch: 3/8"
Gauge: .050"
Drive links: 66

18" bar

Pitch: 3/8"
Gauge: .063"
Drive links: 66

20" bar

Pitch: 3/8"
Gauge: .050"
Drive links: 72

20" bar

Pitch: 3/8"
Gauge: .063"
Drive links: 72

22" bar

Pitch: 3/8"
Gauge: .063"
Drive links: 76

25" bar

Pitch: 3/8"
Gauge: .050"
Drive links: 84

25" bar

Pitch: 3/8"
Gauge: .063"
Drive links: 84

28" bar

Pitch: 3/8"
Gauge: .050"
Drive links: 91

28" bar

Pitch: 3/8"
Gauge: .063"
Drive links: 91

Bar mount D025

Buy this chain

3/8 pitch, .050 gauge, 66 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 Stihl MS 461 R

Chain for each bar length
Bar	Pitch	Gauge	Drive links
18"	3/8"	.050"	66
18"	3/8"	.063"	66
20"	3/8"	.050"	72
20"	3/8"	.063"	72
22"	3/8"	.063"	76
25"	3/8"	.050"	84
25"	3/8"	.063"	84
28"	3/8"	.050"	91
28"	3/8"	.063"	91

The Stihl MS 461 R chain depends on the bar. 18" bar: 3/8", .050", 66 drive links; 18" bar: 3/8", .063", 66 drive links; 20" bar: 3/8", .050", 72 drive links; 20" bar: 3/8", .063", 72 drive links; 22" bar: 3/8", .063", 76 drive links; 25" bar: 3/8", .050", 84 drive links; 25" bar: 3/8", .063", 84 drive links; 28" bar: 3/8", .050", 91 drive links; 28" bar: 3/8", .063", 91 drive links.

Stihl genuine part numbers

If you prefer the maker's own parts, these are the numbers to ask for at a dealer.

Stihl bar and chain part numbers
Bar	Chain part no.	Bar part no.	Pitch / gauge	Drive links
18"	33 RS3 66	3003 008 8917	3/8" / .050"	66
18"	36 RS3 66	3003 008 6117	3/8" / .063"	66
20"	33 RS3 72	3003 008 8921	3/8" / .050"	72
20"	36 RS3 72	3003 008 6121	3/8" / .063"	72
22"	36 RS3 76	3003 000 9425*	3/8" / .063"	76
25"	33 RS3 84	3003 000 4030, 3003 000 9630*	3/8" / .050"	84
25"	36 RS3 84	3003 000 9831*	3/8" / .063"	84
28"	33 RS3 91	3003 000 8838, 3003 000 9638	3/8" / .050"	91
28"	36 RS3 91	3003 000 6038*	3/8" / .063"	91

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

Stamp number

Type the number on a drive link

See all stamp numbers

Drive link stamp number to pitch and gauge
Stamp	Pitch	Gauge
11	3/4"	.122"
16	.404"	.063"
18	.404"	.080"
20	.325"	.050"
21	.325"	.058"
22	.325"	.063"
25	1/4"	.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"
72	3/8"	.050"
73	3/8"	.058"
75	3/8"	.063"
80	.325" LP	.043"
90	3/8" LP	.043"
91	3/8" LP	.050"
95	.325"	.050"

Questions people ask

What size chain does a Stihl MS 461 R take?

How many drive links is a Stihl MS 461 R chain?

It depends on the bar: 66 on a 18" bar, 66 on a 18" bar, 72 on a 20" bar, 72 on a 20" bar, 76 on a 22" bar, 84 on a 25" bar, 84 on a 25" bar, 91 on a 28" bar, 91 on a 28" bar. The bar length is usually printed near the mount.

What bar fits a Stihl MS 461 R?

A bar with the D025 mount, in one of these lengths: 18", 20", 22", 25", 28".

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