748: Transmis. shafts; bearings; gears; flywheel; clutches

7481: Transmission shafts and cranks 7482: Bearing housings and plain shaft bearings 7483: Articulated link chain & parts thereof, iron, steel 7484: Gear & gearing; ball screws; speed changers 7485: Flywheels and pulleys 7486: Clutches & shaft couplings (incl. universal joints) 7489: Parts, n.e.s., for the articles of heading 748 748: Transmis. shafts; bearings; gears; flywheel; clutches