• chinawormgearbox

China Professional Worm Gear Tin Bronze Nmrv030-150 Speed Gearbox for Electric Motor gearbox engine

Product Description  Product DescriptionMain Materials:1)housing:aluminium alloy ADC12(size 571-090); die cast iron HT200(size 110-150);2)Worm:20Cr, ZI Involute profile; carbonize&quencher heat treatment make…