Machine parts, namely, bearing inserts; Machine parts, namely, bearing housings; Machine parts, namely, roller bearings; Roller bearings for machines; Machine parts, namely, roll mill bearings; Bearings, as parts of machines; Engine bearings; Machine parts, namely, bearings; Anti-friction 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 trans...