Industrial robots; Loading and unloading machines; Cargo handling machines; Manipulators for forging presses and for forging machines; Material handling machines, namely, palletizers, case elevators, automatic pallet dispensing machines and automatic slip sheet dispensing 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 bea...