Agricultural machines, namely, cultivators, harvestors, disk harrows, seeders; Anti-friction bearings for machines; Ball bearings for use in machines, namely, harvestors, disk harrows, seeders; Bearing housings for machines; Bearing inserts for machines; Bearings for transmission shafts, being parts of machines; Bearings, as parts of machines; Connecting rods for machines, motors and engines; Couplings for machines; Gears for machines; Industrial robots; Machine parts, namely, bearings; Machine parts, namely, bearings and bushings; Pulleys being parts of machines; Roller bearings for machines; Roller chains being parts of 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; Transmissions for machines; Winding machines, packaging machines, conveying machines, particularly conveyor belts, roller conveyors and carrier rollers for web materials