Bearing housings for machines; Bearing inserts for machines; Bearings for transmission shafts, being parts of machines; Bearings, as parts of machines; Bushings for use as parts of machines; Chain conveyors; Gear motors not for land vehicles; Gears for machines; Gears, other than for land vehicles; Power transmission belts for machines, motors and engines used in industrial applications; Pulleys being parts of machines; Anti-friction bearings for machines; Belt pulleys being parts of machines; Bushing assembly for conveyor pulleys; Driving chains other than for land vehicles; Elevator chains being parts of machines; Engine bearings; Engine timing components, namely, cam sprockets and chains; Idling pulleys being parts of machines; Machine coupling and belting except for land vehicles; Machine couplings and transmission components except for land vehicles; Machine parts namely, flexible shaft couplings; Machine parts, namely, bearings and bushings; Machine parts, namely, roll mill bearings; Machine parts, namely, roller bearings; Power transmissions and gearing for 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; Shaft couplings as parts of machines; Transmission chains, other than for land vehicles; Transmission gears for machines