Should the knife and hole plate of a commercial meat grinder be purchased as a matched set?

Because cutting quality depends on the clearance between knife and plate, replacement parts cannot be selected by dimensions alone. Before ordering, verify the knife's center bore, thickness, plate diameter and mating surfaces, and ask the maker which combinations they recommend. Multiple plates suit multi-grind production, yet each pairing still needs a trial run to prevent inconsistent output from mixed assemblies. Once volumes grow, attach the approved hole-size/knife pairing to the purchase order and confirm feed rate as a check; release each set only after first-article sign-off.