Anti-friction bearings for machines; Ball bearings for use in machines, namely, Machine tools, printing machines, textile machines, food processing equipment, skateboards, bicycles, engines, transmissions, wheels, washing machines, electric fans, vacuum cleaners, aircraft engines, landing gear, flight control systems, CT scanners, MRI equipment; Ball rings for bearings for machines, namely, Engine, transmission, steering gear, plate rolling machine, crusher, screening equipment, fixed parts, bearing seat, bearing sleeve, oil-free composite copper sleeve; Bearing brackets for machines; Bearing cages being parts of machines; Bearing housings for machines; Bearing inserts for machines; Bearings for transmission shafts, being parts of machines; Bearings, as parts of machines; Engine bearings; Machine parts, namely, bearing housings; Machine parts, namely, bearing inserts; Machine parts, namely, bearings; Machine parts, namely, bearings and bushings; Machine parts, namely, roll mill bearings; Machine parts, namely, roller 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; Shaft bearings for vacuum pumps; Sliding bearings for machines