22 INCH X 28 INCH BALL MILL Stock Number: C-2277 Mfg. US Stoneware No. AW 93102 22 inch diameter x 28 inch inside dimensions Jacketed steel Rubber lined, but rubber is defective 5 Hp, 208-230/460v, 3ph. 8 inch inlet/outlet (1) available Posted in Process Grinders and Mills.