same size and shape as compared to other tired order

Cylindrical roller bearings are precision bearings , precision roller sorting postal shaft ring wall to guide from the cage , and guide roller shaft ring composition, can be separated with another bearing rings , are separable bearings. Such Backing bearings installation and removal more convenient, especially when required, the outer ring and the shaft housing are interference fit more shows its advantages ; these bearings are generally used only with radial load carrying loaded guns , only the inner and outer circles are single row backing bearings  with ribs with a smaller or larger axial load steady intermittent axial load ; same size and shape as compared to other tired order , such bearings with high load, background noise , and high speed characteristics , ideal for all kinds of precision machinery and mining and mill machinery. But with such a bearing with the shaft , rolling and other related parts require precision machining.
Needle roller bearings (NK, NKS, RNA49, RNA48, NKL, NKLS, NA49, NA48, RNA69, NA69, RNA49 ... RS, RNA49 .. 2RS, NA49 .. RS, NA49 .. 2RS, RNAO, NAO) structure compact , small radial size , load capacity, withstand greater radial load . Such a variety of structure and size of the bearing series , the needle assembly G2 level , grouping batches diameter variation in less than 2um , except full complement needle roller bearings are made ??of high resistance cage, able to correctly guide the needle parallel to the axis .