# Field Notes on NN3008K double-row cylindrical roller bearing

NN3008K is listed as a double-row cylindrical roller bearing for CNC machines. Because a public millimetre sheet is thin on some catalog pages, confirm bore, outside diameter, and width against your drawing or the live product listing.

Typical duty includes CNC machine tools and other precision double-row cylindrical positions. Material on this listing is bearing steel. If your equipment sits outside that range, say so on the request rather than forcing a familiar part number.

Do not substitute NN3008 (straight bore) if the spindle calls for a tapered K bore, or NN3007/NN3009. The K suffix means a tapered bore. Confirm W33, precision, and whether a sleeve is required before the spindle is assembled.

Review NN3008K on the TFL Bearing Made-in-China listing. Shandong TFL Bearing Co., Ltd can confirm stock, packing, and any OEM marking once the drawing or sample is attached.