Gears and gearing; (not toothed wheels, chain sprockets and other transmission elements presented separately); ball or roller screws; gear boxes and other speed changers, including torque converters

Transmission shafts (including cam shafts and crank shafts) and cranks

Bearing housings, incorporating ball or roller bearings

Bearing housings, not incorporating ball or roller bearings and plain shaft bearings

Pulleys and flywheels, including pulley blocks

Clutches and shaft couplings (including universal joints)

Transmission components; toothed wheels, chain sprockets and other transmission elements presented separately; parts