SANY Excavator Sprocket and Idler

Sprockets, drive tumblers and front idlers for SANY SY-series excavators. These are sized by machine class, not by model family: the SY135C at 13.5 t, the SY215C at 21.9 t, the SY365H at 35–38.1 t and the SY485H at 49.5 t run four different undercarriage classes, and none of these parts crosses between them. The SY365H alone ships in three builds (-9, -10 and -S) at 35.0, 36.0 and 38.1 t, so send the full suffix rather than the base model. Two things we always ask before quoting: whether you want a bare idler wheel or the complete assembly with recoil spring and track adjuster cylinder, and what condition the track chain is in — a new sprocket run against a stretched chain wears out in a fraction of its normal life, so the two are usually replaced together. The recoil spring is a stored-energy component and should not be stripped in the field.