Key Technology\noffers a rotary polish as the standard finish on its vibratory and\nhorizontal motion conveyor beds. Key’s rotary finish provides a smoother stainless steel surface that\nresists bacterial attachment and biofilm formation, according to the company. Compared to the\nindustry-standard 2B finish, Key’s rotary polish within the product contact\nzones improves sanitation to maximize food safety.", "Surface roughness is\nmeasured by an Ra (roughness average) value that refers to the peaks and\nvalleys of the metal’s surface in microinches or micrometers. Compared to a 2B\nfinish on stainless steel that often varies from 10 to 40 µin (0.254 to 1.016\nµm) Ra, Key’s rotary finish provides a more constant Ra value of less than 10\nµin (0.254 µm). Consistently smooth rotary polished surfaces better resist the\nattachment and accumulation of bacterial cells, which is desirable for all food\nproducts including fruits, vegetables, potato products, snacks and nuts as\nwell as meat and dairy.", " In addition to the\nstandard rotary finish, Key offers four manufacturing\nspecifications—Basic, Standard, Standard + and Enhanced—for its vibratory\nand horizontal motion conveyors and processing systems. All four specifications\nfeature a rotary polish on 304 stainless steel product carrying surfaces.\nKey’s Enhanced conveyors also feature ground and polished welds within the\nproduct contact zone and ground and polished surfaces within the “drip, drain\nor draw zones
