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20-inch bar: chain size by saw
Every saw setup on this site that runs a 20″ guide bar, with the pitch, gauge and drive links we could trace to a source. The bar length narrows the choice; the stamp on your bar tail settles it.
| Saw | Bar | Pitch | Gauge | Drive links | Status |
|---|---|---|---|---|---|
| Husqvarna 455 Rancher | 20″ | 3/8″ | .050″ (1.3 mm) | 72 | VERIFIED |
| Husqvarna 455 Rancher | 20″ | 3/8″ | .058″ (1.5 mm) | 72 | VERIFIED |
| Husqvarna 455 Rancher | 16″–20″ (.325″ setups) | .325″ | .050″ / .058″ by bar | 56–78 by exact bar (manual range) | VERIFY ON BAR STAMP |
| Echo CS-590 Timber Wolf | 20″ (standard) | 3/8″ | .050″ (1.3 mm) | 70 | VERIFIED |
The same bar length is sold in more than one pitch and gauge. Read the stamp on your bar tail and match all three numbers — how to read it.
Chain specs seen on 20″ bars
Questions
What chain fits a 20 inch chainsaw bar?
It depends on the bar's pitch and gauge, not the length. Among the saws verified on this site, 20 inch bars appear with 3/8″ pitch / .050″ (1.3 mm) gauge (72 or 70 drive links); 3/8″ pitch / .058″ (1.5 mm) gauge (72 drive links). Sources disagree for some saws, so read the pitch, gauge and drive-link count stamped on your own bar tail before ordering.
How many drive links does a 20 inch bar take?
The drive-link count depends on the chain pitch and the bar: on this site, verified 20 inch setups range over 70, 72 drive links. Never order by bar length alone.