2.10.3 the performance of ball mill relative to vertical mills. comminution in ball mills and vertical mills differs fundamentally. in a ball mill, size reduction takes place by impact and attrition. in a vertical mill the bed of material is subject to such a high pressure that individual particles within the bed are fractured, even though the.All mse pro ball milling products are further supported by a team of trained scientists and engineers. contact us today to discuss your ball milling needs. features of 0.4l bench top vertical planetary ball milling machine. dimensions: 500 mm x 300 mm x 340 mm, suitable for use in glove boxes. special gear design for low noise and.