高低速轴承一般是以线速度而不是转速来定位的
High and low speed bearings are usually positioned by linear speed rather than speed.
高速轴承的速度都要达到每秒60米以上的速度要求，所以小轴承可能随便都是几万转，但是也不是高速轴承，而超大轴承每分钟几百转就算高速轴承了，原因就是后者线速度大。在滑动轴承中，液体静压轴承、液体动压轴承、气体静压轴承、气体动压轴承都适合高速旋转。
High-speed bearings have to reach the speed of more than 60 meters per second, so small bearings may be tens of thousands of revolutions, but not high-speed bearings, and super-large bearings every minute hundreds of revolutions even high-speed bearings, the reason is that the latter linear speed. In sliding bearings, hydrostatic bearings, hydrodynamic bearings, aerostatic bearings, aerodynamic bearings are suitable for high-speed rotation.
低速的一般用滚动轴承，高速的一般用滑动轴承
Low speed general rolling bearings, high speed plain sliding bearings.
顾名思义，滚动轴承里有滚珠，有球形的，圆柱形的，圆锥形的。滑动轴承里一般是轴瓦。高低速轴承通过外观很难辨别，而且常见的低速轴承居多且价格便宜，但在机械内部内使用的高速轴承较多。
As the name suggests, rolling bearings have balls, spherical, cylindrical, conical. Plain bearings are usually bearing bushes. It is difficult to distinguish high-speed bearings from low-speed bearings by their appearance, and the common low-speed bearings are more and cheaper, but the high-speed bearings used in the internal machinery are more.
高速轴承一般使用于机器内部用液体轴承油降温润滑
High speed bearings are usually used in the machine to lubricate with liquid bearing oil.
如果轴承不是用在汽车上对于电机这种转速高没有多大力量的地方，高速轴承也可以用固体轴承油降温润滑。一般发动机变速器差速器内部使用的就是高速轴承，而底盘如半轴轮毂轴承使用的就是低速轴承。
High-speed bearings can also be cooled and lubricated with solid bearing oil if the bearings are not used in automobiles where the high speed of the motor does not have much power. Generally speaking, high-speed bearings are used in engine transmission differential, while low-speed bearings are used in chassis such as semi-axle hub bearings.
如果一定要从外表去区分高低速轴承，可以看以下两点：
If we must distinguish the high and low speed bearings from appearance, we can see the following two points:
1、高速轴承比低速轴承的精度高，而且它的表面粗糙度小。直观区别就是高速轴承比低速轴承的表面更加光滑，晃动外圈跟内圈高速轴承的间隙更小，而低速的则相反。
1, high speed bearing is more accurate than low speed bearing, and its surface roughness is small. The visual difference is that the surface of high-speed bearings is smoother than that of low-speed bearings, and the clearance between the shaking outer ring and the inner ring of high-speed bearings is smaller than that of low-speed bearings.
2、高速轴承跟低速轴承相比，其轴承的钢珠或滚子的精度不同，以及滚道的精度高于低速轴承的精度，高速轴承的等级高且材质好，比如钢材的金相组织，硬度等。
2. Compared with low-speed bearings, high-speed bearings have different ball or roller precision, and the accuracy of raceway is higher than that of low-speed bearings. High-speed bearings have high grade and good material quality, such as microstructure and hardness of steel.
一般的滚动轴承适应低中速度的旋转，如果使用滚动轴承高速旋转需要特殊的要求，可以根据使用的载荷等因素合理选择其型号。
General rolling bearings adapt to low and medium speed rotation, if the use of high-speed rolling bearings require special requirements, according to the use of load and other factors can reasonably choose its model.
如果速度在5到60米每秒之间的话就算不上高速轴承，一般的轴承只要能润滑基本都能满足。如果在一些特殊的场合使用速度更高的轴承，比如在高速切削机床或者精密加工等机床使用的高速旋转轴承还可以使用陶瓷轴承、电力、磁力轴承等特殊的轴承，就要与专业的厂家联系。
If the speed is between 5 and 60 meters per second is not high-speed bearings, as long as the general bearing can be lubricated can basically meet. If the use of higher speed bearings in some special occasions, such as high-speed cutting machine tools or precision machining machine tools used in high-speed rotary bearings can also use ceramic bearings, electric power, magnetic bearings and other special bearings, it is necessary to contact professional manufacturers.
