Bearing size accuracy standard

Bearing dimensional accuracy and rotation accuracy is according to ISO and JIS standard. For high-precision and high-speed machines, recommend the use of level 5 or above precision bearing, deep groove ball bearings, angular contact ball bearings and cylindrical roller bearing is suitable for high precision mechanical operation. Rigidity, when bearing rolling element and raceway contact pressure, will produce elastic deformation. Some mechanical need to minimize the elastic deformation. Roller bearing is smaller than ball bearings produced by elastic shape variables. In addition, in some cases the bearing to exert preloading in order to increase rigidity. This program is typically used for deep groove ball bearings, angular contact ball bearings and tapered roller bearing inner and outer circle of bias, shaft bending, shaft or the bearing box tolerance changes, mistakes will lead to the eccentricity of the inner and outer ring. In order to prevent the eccentric Angle is too large, automatic self-aligning ball bearings, automatic self-aligning roller bearings, or self-aligning bearing seat is a better choice. Voice frequency and torque, the rolling bearing are based on high precision standard production, so the voice and the torque is small. Deep groove ball bearings and cylindrical roller bearing used for in low voice, low torque has special requirements of the occasion. Usually bearing can install space is restricted. In most cases, the diameter of axle ( Or bearing inside diameter) Based on mechanical design or other design constraints. So bearing type and size of the choice is determined according to the inner diameter of the bearing. As a result, the main dimensions of the standard bearing table according to the international standard and diameter is compiled. The size of the standard bearing form is various, is best when mechanical device design with a standard bearing ( This design to the bearing is easy to purchase, just as an aside, here model does have some bearing on the catalogue, but some non-standard bearings in mainland China there is no spot, futures will be a long time, sometimes to consider when bearing selection so late time cost and the cost of replacement) Bearing load, the load on the bearing, the nature, size, direction is changeable. Usually, the basic load rating on dimension table are displayed. Axial load and radial load, and so on, but also important factors is to select a suitable bearing. When the size of the ball and needle bearing fairly, needle roller bearing is usually have higher load capacity and bear the larger vibration and shock loads.