The bearing is not included.
Carving sprocket to convert saw for 1/4" mini-chain and carving bar.
This fits Husqvarna 334T, 335, 335XPT, 336, 338XPT, 339XP
Check bar or sprocket for info to confirm you match 1/4 pitch like this sprocket.
1/4 pitch 8 tooth crank shaft diameter is 0.3937
Part# for bearing is 37511