The bearing size and rotation precision is according to ISO and JIS standard. The requirements of high precision and high-speed operation of the machinery, grade 5 or above is recommended precision bearings, deep groove ball bearings, thrust ball bearings or cylindrical roller bearings are suitable for high running precision machinery. Rigid, when the roller and raceway contact surface pressure bearing, can generate elastic deformation. Some machines need to keep to a minimum the elastic deformation. Roller bearings are produced than ball bearings elastic deformation of small.

另外，在某些情况下轴承要施加预压以增加刚性。此程序通常用于深沟球轴承、向心推力球轴承及圆锥滚子轴承内外圈偏置，轴弯曲，轴或轴承箱公差变化，配合错误都会导致内外圈的偏心。为防止偏心角度过大，自动调心球轴承，自动调心滚子轴承，或调心轴承座是较佳的选择。嗓音频率及扭距，滚动轴承都是根据高精度标准生产制造的，所以嗓音及扭力小。深沟球轴承、及圆柱滚子轴承适用对于对低嗓音，低扭力有特别要求的场合。

In addition, in some cases bearing preload is applied in order to increase rigidity. This procedure is usually used for deep groove ball bearings, thrust ball bearings and tapered roller bearing outer ring bias, bent shaft, shaft or bearing box tolerance changes, combined with errors will cause the eccentricity of the inner and outer rings. In order to prevent the eccentric angle is too large, self-aligning ball bearings, self-aligning roller bearings, or self-aligning bearing seat is the better choice. Voice frequency and torque, the rolling bearing are based on high precision standard production, so the noise and small torque. Deep groove ball bearings and cylindrical roller bearings, suitable for low voice, low torque occasions with special requirements.

通常轴承可以安装的空间是受限制的。在大多数的情况下，轴径（或轴承内径）是根据机械的设计或其它设计的限制。所以轴承类型及尺寸的选择是根据轴承的内径而决定的。由此，标准轴承的主要尺寸表均根据国际标准内径尺寸而编制的。

Space is usually bearing can be installed is restricted. In most cases, the shaft diameter (or bearing diameter) is based on the mechanical design or other design constraints. Selection of bearing type and size is based on the inner diameter of the bearing and the decision. Thus, the standard bearing the main dimension tables are according to the international standard diameter size and the preparation of the.

标准轴承的尺寸形式繁多，在机械装置设计时最好采用标准轴承（这设计到轴承是否容易采购，在这里就说句题外话，有些轴承型录上的型号确实有， 但一些非标轴承在中国大陆地区没有现货， 有些时候期货会很长时间， 所以在轴承选型时要考虑时间成本和后期更换的成本） 轴承的负荷， 施加在轴承上的负荷，其性质、大小、方向是多变的。通常，额定基本负荷在尺寸表上均有显示。但轴向负荷及径向负荷等等，亦是选择适合的轴承重要因素。当球及滚针轴承的尺寸相当时，滚针轴承通常有较高的负载能力及承受较大的振动及冲击负荷。

The standard form of bearing size range, in the design of mechanical device is best when using standard bearings (this design to the bearing is easy to purchase, here as an aside, some bearing catalog model does, but some non-standard bearing no cash, in China mainland sometimes futures will be very long time, so in the bearing to be considered in the selection of the time cost and the late replacement cost) bearing load, load exerted on the bearing, the nature, size, direction is changeable. Typically, the basic load rating are displayed in the dimension table. Axial and radial loads and so on, is also an important factor for the selection of bearing. When the size of the ball and needle bearing, needle roller bearings typically have a higher load capacity and bear larger vibration and shock loads.