... Corrosive resistance 1. Special properties:Rare earth and nanometer strengthened engineering plastic is a kind ... provides mobile cranes with greater stability and lifting capability.(2) Improved wire rope life: self- lubricating, hardness lower ... 2. Application:Wire rope sheave, roller, gear, shaft sleeves, supporting wheel, locating wheel,worm wheel, chain wheel, synchromesh band wheel, pulley, hopper ...