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Force analysis of tapered roller bearings

wallpapers News 2021-09-17
Force analysis of tapered roller bearings
Tapered roller bearings are suitable for bearing radial loads, unidirectional axial loads, and combined radial and axial loads. The axial load capacity of tapered roller bearings depends on the contact angle α, that is, the outer ring raceway angle. The greater the contact angle α, the greater the axial load capacity. Generally, tapered roller bearings are not allowed to have an angular error, but the surface of the roller and raceway can be allowed to have an angular error of 2'~4' after being specially designed. Single-row tapered roller bearings Single-row tapered roller bearings can bear axial load in one direction.
And can limit the axial displacement of the shaft relative to the bearing seat in one direction. Even under the action of pure radial load, the additional axial component force will be generated inside the tapered roller bearing. At this time, an equal amount of reverse force is required to balance it. Usually, two single-row tapered roller bearings with the same structure are used in the two supports to face-to-face or back-to-back. In order to ensure that the bearing obtains a good running state, tapered roller bearings are the same as other ball bearings and roller bearings, and a certain amount of Minimum load, especially for high speed, high acceleration, or under the conditions of frequent changes in load direction.
Because of these working conditions, the inertial force of the roller and the cage and the friction in the lubricant will adversely affect the rolling and rotation accuracy of the bearing, and there may be harmful sliding between the roller and the raceway. sports. The minimum load Fmin required for tapered roller bearings can be estimated by the following formula: Fmin = 0.02C, where C is the basic dynamic load rating, which may be larger when starting at low temperatures or when the lubricant viscosity is high Minimum load. Under normal circumstances, the weight of the bearing support itself plus the load borne by the bearing has exceeded the required minimum load. If the minimum load has not been reached, this type of bearing must be subjected to additional radial loads, such as axial preloading of the bearing, to meet the minimum load requirements.
For the use of each product, we are most concerned about the core value of this type of product and the various factors that affect this core value. For tapered roller bearings, its use efficiency is deeply affected by its force. Therefore, it is very important to analyze the force of tapered roller bearings. This is not only the knowledge that users should master, but it may also become a way for businesses to promote such products.


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