This Sub-class includes manufacture of: •gears, gearing and/or gear boxes and/or other speed changers •clutches and/or shaft couplings •flywheels and/or pulleys •articulated link chain •power transmission chain
•manufacture of other chain, see 25999 •manufacture of (electromagnetic) clutches, see 29300 •manufacture of sub-assemblies of power transmission equipment identifiable as parts of vehicles, ships or aircraft, see Divisions 29 and 30