What is the danger of too much pretension and too little preload?
if the preload is too small (Guo Song), will make the shaft bearing stiffness decreases and will destroy the normal gear meshing.Bearing: bearing bearing, used to determine the relative position of the rotating shaft with other parts, and to support or guide the parts. Its main function is to support the mechanical rotating body, in order to reduce the equipment in the transmission process of mechanical load, friction coefficient. According to the friction properties of moving elements, the bearings can be divided into two types: rolling bearings and sliding bearings.
The preload of tapered roller bearings needs to be adjusted at any position.Excessive temperature will lead to overheating, bearing life is shortened; after hours may occur shaft runout and movement, will also shorten the bearing life.
The main and driven bevel gears bear huge loads when they work, and the tapered roller bearings that support them should have a certain degree of preload when the final reducer is installed. The purpose is to reduce the axial displacement of the gear shaft caused by the axial force generated during the transmission of the bevel gear so as to increase the supporting rigidity of the shaft and ensure the proper engagement of the bevel gear pair. If the preload is too large (too tight), will make the transmission resistance increase, low drive efficiency, accelerate bearings;
