... cross-section and stiffness. They are especially suitable for bearing arrangements where radial space is limited. Shaft DiameterBearingDesignationBoundaryDimensions ... power/pneumatic tools, high industrial/engineering and printing machinery, machine tools,etc.3.Supply Needle roller Bearings mainly with ... , k...zw, knl, kzk, kbk) Entity bushed needle roller bearing(RNA, NK, NA, NKI, NKS, NKIS, NA...RS, ...