How do tapered roller bearings bear force?

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, which is the angle of the outer ring raceway. The greater the contact angle α, the greater the axial load capacity. Generally, tapered roller bearings do not allow angular errors, but the surfaces of the rollers and raceways can allow angular errors of 2′ to 4′ after special design. Single row tapered roller bearings Single row tapered roller bearings can bear axial load in one direction.

And it can limit the axial displacement of the shaft relative to the bearing seat in one direction. Even under pure radial load, 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 of the same structure are installed face to face or back to back in two supports. In order to ensure that the bearings are in good operating condition, the tapered roller bearings, like other ball bearings and roller bearings, must apply a certain amount of force. Minimum load, especially when working at high speed, high acceleration, or under conditions with frequent changes in load direction.

Because, under these working conditions, the inertial force of the rollers and cages and the friction in the lubricant will have a negative impact on the rolling and rotation accuracy of the bearings, there may be sliding between the rollers and raceways that is harmful to the bearings. sports. The minimum load Fmin required for tapered roller bearings can be estimated by the following formula: Fmin = 0.02C, where C - basic dynamic load rating. When starting at low temperatures or when the lubricant viscosity is high, a larger load may be required. Minimum load. Often, the weight of the bearing support itself plus the load borne by the bearing exceeds the required minimum load. If the minimum load has not been reached, this type of bearing must be subjected to additional radial load, such as axial preloading of the bearing, to meet the minimum load requirements.

When using each product, what we pay most attention to is the core value of this type of product and the various factors that affect this core value. For tapered roller bearings, their efficiency is deeply affected by their stress conditions. Therefore, the force analysis of tapered roller bearings is very important. This is not only knowledge that users should master, but it may also become an important way for merchants to promote such products.

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