Analysis of bearing force of tapered roller

Tapered roller bearing is suitable for bearing radial load, one-way axial load and radial and axial combined load. The axial load capacity of tapered roller bearings depends on the contact angle α， Namely outer ring raceway angle, contact angle α The larger the load, the greater the axial load capacity. Generally, angle error is not allowed in tapered roller bearing, but angle error of 2 ′～ 4 ′ can be allowed in roller and raceway surface after special design. Single row tapered roller bearing single row tapered roller bearing can bear axial load in one direction.

And it can limit the axial displacement of the shaft in one direction relative to the bearing seat. Even under the action of pure radial load, there will be additional axial force in tapered roller bearing. At this time, an equal amount of reverse force is needed to balance it. Usually, two single row tapered roller bearings with the same structure are installed face to face or back to back in two supports. In order to ensure the good running state of the bearings, tapered roller bearings, like other ball bearings and roller bearings, must apply a certain amount of minimum load, especially for high speed, high acceleration, or under the condition of frequent change of load direction.

Because of these working conditions, the inertia force of roller and cage and the friction in the lubricant will have an adverse impact on the rolling and rotating accuracy of the bearing, and the harmful sliding motion may occur between the roller and raceway. The minimum load Fmin required for tapered roller bearings can be estimated by the following formula: Fmin = 0.02c, where C is the basic rated dynamic load. A larger minimum load may be required when starting at low temperature or when the lubricant viscosity is very high. Usually, the weight of the bearing support itself plus the load on the bearing has exceeded the minimum load required. If the minimum load has not been reached, the bearing must be applied with additional radial load, such as axial preloading to meet the minimum load requirements.

In the use of each product, we are most concerned about the core value of this kind of product and various factors that affect the core value. For tapered roller bearing, its efficiency is deeply affected by its stress. Therefore, it is very important to analyze the bearing force of tapered roller bearing, which is not only the knowledge that users should master, but also the core way for businesses to promote such products.