Bearings, other than for land vehicles, namely, machine bearings; Anti-friction bearings for machines; [ Bearing brackets for machines; Axles for machines; ] Roller bearings; Bearings [ ; Ball rings for bearings for machines, namely, steel making machines, steel rolling machines, conveyors, fans, paper machines, cement machines, screw conveyors, motors, cooling beds, drying cylinders, propeller shafts, kilns, line shafts, mixers, compressors, reclaimers, winches, winders, transfer machines, roller tables, carpet looms, overhead cranes, drum dryers, continuous caster guide rolls, segment zero and foot rolls, and guide rolls; Ball-bearings for use in machines, namely, steel making machines, steel rolling machines, conveyors, fans, paper machines, cement machines, screw conveyors, motors, cooling beds, drying cylinders, propeller shafts, kilns, line shafts, mixers, compressors, reclaimers, winches, winders, transfer machines, roller tables, carpet looms, overhead cranes, drum dryers, continuous caster guide rolls, segment zero and foot rolls, and guide rolls; ] [ Bushing other than for vehicles, namely, machine parts; ] [ Bearings for ships or aircraft; Self-oiling bearings, namely, machine bearings; Bearings for transmission shafts for use in machines; ] [ Rings other than for vehicles, namely, ball rings for machines, namely, steel making machines, steel rolling machines, conveyors, fans, paper machines, cement machines, screw conveyors, motors, cooling beds, drying cylinders, propeller shafts, kilns, line shafts, mixers, compressors, reclaimers, winches, winders, transfer machines, roller tables, carpet looms, overhead cranes, drum dryers, continuous caster guide rolls, segment zero and foot rolls, and guide rolls; Lubricators, namely, lubricating pumps; Journal boxes; Shaft couplings not for land vehicles; ] [ machine parts, namely, bearing housings ]