7 Bearing brackets for machines; Bearings, as parts of machines; Engine bearings; Machine parts, namely, bearing housings; Machine parts, namely, bearings; Machine parts, namely, bearings and bushings; Roller bearings for machines; Self-lubricating mechanical friction parts, especially of composite materials, namely, wear rings, washers, bushings, spherical bearings, bearing pads, sliding blocks and machine transmission gears all for load bearing machines, conveyors, handling trucks and machines, lifting machines, agricultural machinery, construction equipment machines and hydraulic turbines; Sliding bearings for machines; Spark plugs