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Jinan Shengtuo Mechanical and Electrical Equipment Co.,Ltd
Add:Shandong Jinan High-tech No.59 Industry South Road,Jinan City, Shandong Province, China 250101
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Special attention problem of high speed bearing installation

- Dec 07, 2017 -

High-speed bearings have two characteristics, one is high precision, the other is high temperature resistance. Therefore, high-speed bearings should be installed in accordance with high-precision bearing requirements, but also in accordance with high temperature bearings to install. Therefore, in the installation of high-speed bearings to take into account the bearing's coordination and clearance.

In the installation of high-speed bearings to take into account 2 points: The temperature rise caused by the hardness changes, the high speed rotation of the force caused by the changes and shape changes!

In order to ensure that the deformation of the bearing after the installation of small, excessive interference with the interference can not be too large, and at high speed under the centrifugal force and high temperature of the thermal expansion, or offset the surface of the normal pressure. Or to make the mating surface slack, so the interference must be considered carefully under the premise of the above two factors, the effective interference at normal temperature constant speed may be ineffective for high-speed bearings.

If the result of the calculation is too large (usually only at ultra-high speeds), only by adopting the double lubrication method of the ring lubrication and hydrostatic lubrication, and this scheme may make the DMN value of the bearing break through the 3 million mark.

Thermal expansion at high temperatures, or offsetting the normal pressure of the mating surface. Or to make the mating surface slack, so the interference must be considered carefully under the premise of the above two factors, the effective interference at normal temperature constant speed may be ineffective for high-speed bearings.

If the result of the calculation is too large (usually only at ultra-high speeds), only by adopting the double lubrication method of the ring lubrication and hydrostatic lubrication, and this scheme may make the DMN value of the bearing break through the 3 million mark.


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