Sprocket & Rim
The power from your chainsaw drives the sprocket,and the sprocket drives your cutting chain at high speed around your guide bar.your sporocket, chain, and guide bar are the three components of your saw's cutting team it's the cutting team that does the actual work of
cutting,and your sprocket is an essential member of the team.CRT sprockets can be installed on chainsaws having either inboard, or outboard clutch assemblies.
cutting,and your sprocket is an essential member of the team.CRT sprockets can be installed on chainsaws having either inboard, or outboard clutch assemblies.
| 12 | 44 | 7 | 458 | |
  |
 |
 |
  |
|
| GAUEGU | PITCH | DRIVE LINKS | TOTEL HEIGHT 458=45.8MM 347=34.7MM 290=29.0MM |
|
| 12=Spru sprocket | 14=1/4" | 6=6drive tooth | ||
| 13=Rim sprocket | 25=.325" | 7=7drive tooth | ||
| 38=3/8" | 8=8drive tooth | |||
| 44=.404" | 9=9drive tooth | |||
| CRT | Oregon | Chain Saw Model | Pitch | Drive Teeth |
| Part Numbers | Part Numbers | |||
| 12447458 | 107794X | S070 | .404" | 7 |
| 12387410 | 32061X | S380 | 3/8" | 7 |
| 12447347 | 32072X | S051 | .404" | 7 |
| 12447355 | 35992X | S08 | .404" | 7 |
| 12386266 | 100962X | S018 | 3/8"(91) | 6 |
| 12257285 | 106657X | S180 | .325" | 7 |
| 12257292 | 38076X | S026 | .325" | 7 |
| 12257381 | ST315SCJ7N | S028 | .325" | 7 |
| 12387314 | 38145 | S029 | 3/8" | 7 |
| 12387305 | 32060 | S041 | 3/8" | 7 |
| 12257247 | 100876X | S024 | .325" | 7 |
| 12387341 | ST328A7N | S066 | 3/8" | 7 |
| 12387290 | 38471X | S046 | 3/8" | 7 |
| 12387288 | JO265LCA7N | H365 | 3/8" | 7 |
| 12257270 | 108308X | H340 | .325" | 7 |
| 12387312 | 32057 | H61 | 3/8" | 7 |
| 12257268 | 106656X | H137 | .325" | 7 |
| 12386280 | 106114 | P350 | 3/8"(91) | 6 |
| 12386128 | 104102 | 86 | 3/8"(91) | 6 |
| 12386254 | 29888 | McCU2316 | 3/8"(91) | 6 |
| 13447458 | 108818X | S070 | .404" | 7 |
| 13387410 | 509604X | S380 | 3/8" | 7 |
| 13447355 | 10625X | S08 | .404" | 7 |
| 13387296 | 100961 | S180 | 3/8"(91) | 7 |
| 13257290 | ST305SCJ7N | S250 | .325" | 7 |
| 13387341 | 35464 | S066 | 3/8" | 7 |
| 13387296 | 106593X | H365 | 3/8" | 7 |
| 13257270 | 108215X | H346 | .325" | 7 |
| 41726X | 41726X | H137 | .325" | 7 |
