Xiamen Goldenbridge Imp. & Exp. Co.,Ltd is one of the leading China precision needle bearings manufacturers, and is also a professional precision needle bearings supplier and factory, we are always at your service.NA49 Series Precision Needle Roller Bearings With Inner RingMachined Needle Roller Bearings are bearings with a low sectional height and large load ratings. The outer ring has high rigidity and can easily be used even for light alloy housings. These bearings are available in metric series and inch series, both of which have the caged type and the full complement type. It is therefore possible to select a suitable bearing for use under various conditions such as heavy loads and high-speed or low-speed rotations. In addition, there are bearings with and without an inner ring. As the type without inner ring uses a shaft as the raceway surface, a compact design is possible.Design AttributesHigh-strength cage retains and guides rollersHigh speed and lubrication-retention capability. A lubrication groove and hole in the O.D. facilitate relubrication through the outer ring.Bearings can be used with or without a machined and ground inner ring depending on the suitability of the shaft as a raceway surface.ApplicationsGear pumpsSheavesAutomotive transmissionsTwo-cycle enginesNA49 Series Precision Needle Roller Bearings With Inner RingNA4900 NA4901 NA4902 NA4903 NA4904 NA49/22 NA4905 NA49/28NA4906 NA49/32 NA4907 NA4908 NA4909 NA4910 NA4911 NA4912NA4913 NA4914 NA4915 NA4916 NA4917 NA4918 NA4919 NA4920Part NumberDimension(mm)dFDBNA490010142213NA490112162413NA490215202813NA490317223013NA490420253717NA49/2222283917NA490525304217NA49/2828324517NA490630354717NA49/3232405220NA490735425520NA490840486222NA490945526822NA491050587222NA491155638025NA491260688525NA491365729025NA4914708010030NA4915758510530NA4916809011030NA49178510012035NA49189010512535NA49199511013035NA492010011514040
