jan 20, 2015 normally the ratio between the worn grinding layer and the material removal is lower than one. to increase the productivity the relationships between grinding wheel properties, process parameters and pcbn insert specifications have to be obtained. in an initial step the main factors on the grinding wheel wear and cutting mechanisms are determined.,list factors affecting grinding ball media wear rate,apr 30, 2018 in addition to wear speed, ball size and recharge practice, charge volume, and feed rate are significant factors affecting the actual production wear rate. wear speeds are largely independent of ball size and ball charge volume. the wear rate exponent for sag milling was experimentally determined to be n 2.8.