How grid geometry influences discharge size and throughput

Grid geometry sets the size of material leaving the shredder. Hole size, hole shape and discharge angle work together, and changing one parameter without reviewing the others often moves the problem downstream rather than solving it. A larger hole size raises throughput but widens the output size range, which can affect downstream separation. Hole shape influences how material presents to the opening, and the discharge angle affects how quickly sized material leaves the cutting chamber. Before adjusting a grid, it is worth recording the target output size, the feed mix and the current wear condition of the hammers, because worn hammers change the effective cutting gap and therefore the sizing behaviour of the same grid.