Conical Burr - Coffee Grinders - CapressoFactory Serviced · Home ›; Coffee Grinders ›; Conical Burr. Refine Your Search . Infinity Conical Burr Grinder, Stainless Steel. $149.99. Learn More. Compare ›.conical grinders coffee,conical grinders coffee,Burr Grinder Basics | Prima CoffeeSep 23, 2014 . Generally speaking, most electric burr grinders under $100 will have false burrs, and your best bet is to look for machines with conical steel.