Home / Bar lengths / 18″ bar
18-inch bar: chain size by saw
Every saw setup on this site that runs a 18″ 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 |
|---|---|---|---|---|---|
| Stihl MS 250 | 18″ | Reported both .325″ and 3/8″ | Reported .050″ and .063″ | 72 (marketplace listing) · 68 (one roundup) | SOURCES CONFLICT |
| Husqvarna 450 Rancher | 18″ | .325″ | .050″ (1.3 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-400 | 18″ | 3/8″ Low Profile | .050″ (1.3 mm) | Verify on your bar stamp | VERIFY ON BAR STAMP |
| Echo CS-590 Timber Wolf | 16″ / 18″ / 24″ / 27″ (optional) | 3/8″ | .050″ (1.3 mm) | Verify on your bar stamp | VERIFY ON BAR STAMP |
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 18″ bars
Questions
What chain fits a 18 inch chainsaw bar?
It depends on the bar's pitch and gauge, not the length. Among the saws verified on this site, 18 inch bars appear with .325″ pitch / .050″ (1.3 mm) gauge (72 drive links); 3/8″ Low Profile pitch / .050″ (1.3 mm) gauge; 3/8″ pitch / .050″ (1.3 mm) gauge. 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 18 inch bar take?
The drive-link count depends on the chain pitch and the bar: on this site, verified 18 inch setups range over 72 drive links. Never order by bar length alone.