Burr size in Commercial Grinders directly affects grind speed, heat generation, and particle distribution quality. Larger burrs — 64mm, 75mm, 80mm, 83mm — spin at lower RPMs to achieve the same throughput as smaller burrs, generating less heat and producing a more consistent grind. Less heat means less thermal impact on grind consistency during long service periods. Larger flat burr sets also tend to produce more uniform particle size distribution, which translates to more even extraction and better flavor clarity. All Commercial Grinders in our collection are spec'd with their burr size, allowing you to match grinder capability to your espresso volume and quality requirements.