Motorcycle bearings mainly include engine bearings, gearbox bearings, chassis bearings, and auxiliary equipment bearings. Engine bearings typically include: stamped housing needle roller bearings, crank cage bearings, ball bearings, and cylindrical roller bearings. Gearbox bearings typically include: reinforced needle roller bearings, (plastic) cage bearings, stamped housing needle roller bearings, clutch bearings. Chassis bearings usually include: wheel hub bearings, spherical plain bearings, and stamped shell needle roller bearings. Auxiliary equipment bearings usually include: tapered roller bearings, thrust roller bearings, and universal joint crosshead sleeves.