IMO

parts for mechanical appliances for power transmission devices, other than for land vehicles, namely, toothed rings, slewing rings, large diameter anti-friction bearings in the nature of slew bearings, four-point contact bearings, ball- and roller-bearing slewing rings, and mechanical slew drives in the nature of slewing rings with a drive unit consisting of a worm-gear pair or a spur-toothed pinion driven by a hydraulic or an electric motor in a housing

parts for mechanical appliances for power transmission devices for land vehicles, namely, toothed rings, slewing rings, large diameter anti-friction bearings in the nature of slew bearings, four-point contact bearings, ball- and roller-bearing slewing rings, and mechanical slew drives in the nature of slewing rings with a drive unit consisting of a worm-gear pair or a spur-toothed pinion driven by a hydraulic or an electric motor in a housing