The choice of bearing bearing compliance with the use of mechanical bearing dimensions, specifications, as well as speed, etc., the following simple analysis:
    First, the size restrictions.
    Usually bearing can be installed in the space is restricted. In most cases, shaft (or bearing inner diameter) is a limit in accordance with the mechanical design or other designs. Bearing type and size selection is determined according to the inner diameter of the bearing. Thus, the scale bearing the main dimensions of the table are prepared according to the international scale diameter size.
    The size of the scale bearing a wide variety of forms, the best mechanism design using scale bearing (bearing is designed to easily procurement, on an aside here, does have some bearing catalog models, but some non-standard bearing in Mainland China is not in stock, sometimes futures will be a long time, so to consider the time cost and the capital late replacement in the bearing selection) bearing the load, the load applied on the bearing, of its nature, size, direction is changing 's. Typically, the basic rated load size table are displayed. But the axial load and radial load, etc., are also important factors to select a suitable bearing. When the proportionality of the size of the ball and needle roller bearings, needle roller bearings usually have a higher load capacity and withstand vibration and shock loading.
    Secondly, the rotational speed.
    The promised speed is based on the bearing type, size, precision, cage type, load, lubrication, and cooling mode factors determine. Bearing table listed on the the scale speed precision bearings in oil lubrication and grease lubrication promised. Typically, deep groove ball bearings, self-aligning ball bearings and cylindrical roller bearings together for high-speed operation of the occasion.
    Once again, bearing tolerances.
    Bearing dimensional accuracy and rotational accuracy according to ISO and JIS scale. For the mechanical requirements of high-precision and high-speed operation, it is recommended to use five or more precision bearings, deep groove ball bearings, angular contact ball bearings or cylindrical roller bearings, while for high running accuracy mechanical. Rigidity, when the bearing to move the body and the raceway contact surface pressure, will produce the elastic deformation. Some machines require the elastic deformation is minimized. Elastic deformation than ball bearings roller bearings.
    In addition, in some cases bearings to preload in order to increase rigidity. This procedure is usually used for deep groove ball bearings, angular contact ball bearings and tapered roller bearing inner and outer rings bias, shaft bending, shaft or bearing housing tolerance variations, with the error will lead to the eccentricity of the inner and outer rings. The to prevent eccentric angle through large, automatically aligning ball bearings, self-aligning roller bearings, aligning bearing is the better choice. Voice frequency and torque move bearings are produced in manufacturing high-precision scales, small voice and torsion. Deep groove ball bearings and cylindrical roller bearings combined low voice, low torque requirements of the occasion.


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