The machine retain the SA804-A type on the basis of all the little electrical control system to introduce the latest international technology and inverter device, after the installation of frequency control devices for the SA804-B-type frequency control rubber grinder to  introduce the latest international technology and inverter device, after the installation of.

Model SA804-B rubber & plastic roller grinder is applicable for grinding butyronitrile rubber roller, leather roller, leather collar, and various bearing leather rollers and leather collars used in textile machines of all kinds of sliver lap drawing, combing, roving and spinning in the fields of cotton spinning, wool spinning, linen spinning , chemical fiber and so on. It can also be used to grind rubber leather roller, leather collar and various bearing leather rollers of printing machines and office facilities like printer, copier, fax machine, plus various bearing leather rollers and other rubber products.