Axial flow blowers; Axles for machines; Ball rings for bearings for machines, namely, machine; Bearings, as parts of machines; Crankcases for machines, motors and engines; Engine bearings; Machine parts, namely, bearings; Machine parts, namely, roll mill bearings; 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