10 feet diameter silica mill. figures 2 and 3 a 28 exilog and gr bearing itted to a french aluminates ball mill. speed is 26 rmin and each bearing is carrying 15 tonnes (147 kn). figure 4 cement plant in the uk using skf cooper 280 mm bearing on the trun nion shaft. figures 5 and 6 south african plant using skf cooper 03bcp 320 mm on this.