The stiffness of the bearing supported by the rolling bearing is determined by the stiffness of the bearing itself, the contact stiffness of the inner and outer rings of the bearing with the main shaft journal bearing bore and the rigidity of the bearing seat. The elastic displacement of the rolling bearing under the action of external force is mainly caused by the contact deformation between the rolling element and the bearing ring raceway. The amount of elastic displacement is related to the bearing type, size and adjustment (with or without preload). In general, line-contact roller bearings are stiffer than point-contact ball bearings, and double-row bearings are higher than single-row bearings. The larger the bearing size, the greater the number of rolling elements in the bearing and the higher the bearing stiffness. Appropriate preloading of the rolling bearing can make the bearing force of the rolling element in the bearing uniform, and the bearing area can be increased due to the pre-tightening deformation of the contact between the rolling element and the inner and outer raceways, and the rigidity of the bearing can be improved. Measures to increase the stiffness of the main pumping unit. Reasonably determine the structural size of the main shaft and increase the rigidity of the main shaft. As mentioned above, increasing the diameter of the main shaft has a very significant effect on improving the rigidity. However, after the diameter of the main shaft is increased, the size of the main shaft bearing and the cutter roll must be increased accordingly, which not only affects the structure size of the flying knife roll, but also limits the bearing rotation speed, so the main shaft diameter cannot be arbitrarily increased. Titanium Dioxide White,High Hiding Power Rutile,Ink Grade Titanium Dioxide Power,Ink Grade Titanium Dioxide Yibin Tianyuan Group , https://www.ybtyco.com