Bearing clearance standard quick table

Bearing clearance standard 2019 - quick table 08 - 28 1, the so-called bearing clearance, which refers to the bearing in the bearing box mounted on shafts or not, will it a fixed housing, then the party has not been fixed do radial or axial movement of the mobile. According to the moving direction, can be divided into radial clearance and axial clearance. In the operation of 2, clearance ( As the work clearance) About the size of the bearing fatigue life of rolling, temperature, noise, vibration etc. 3, measurement of bearing clearance, to obtain stable measured value, generally impose regulations on bearing load measurement. Therefore, the resulting measured values than real clearance ( As the theory of clearance) Big, that is, to increase the measuring load produced by the elastic deformation. For roller bearing, due to the elastic deformation is small, can be neglected. 4, install the front bearing internal clearance generally expressed in the theory of clearance. 5, from theoretical clearance minus the bearing installed on the shaft or housing because of the interference fit within the ring of the expansion or contraction after the clearance called 'installation clearance. Add and subtract in installation clearance because the size of the bearing internal temperature changes the amount of clearance called 'effective clearance. 6, bearing installed with mechanical clearance when placed under certain load, the effective clearance and bearing load produced by the elastic deformation after the so called 'work clearance. 7, when the working clearance is slightly negative, the fatigue life of bearing the longest but with the increase of negative clearance with a significant reduction in fatigue life. Therefore, choose the bearing clearance, general work clearance is zero or slightly is advisable. In addition, it is necessary to improve the bearing rigidity or to reduce noise, further negative clearance to work, and when the bearing temperature rise drastically, work clearance should further positively and so on, also must make a concrete analysis according to the conditions of use.