The Influence of Fitting Accuracy of Inner and Outer Rings of Tapered Roller Bearings on Bearing Temperature Rise

What is tapered roller bearing
The ability of tapered roller bearings to bear axial loads depends on the contact Angle, that is, the outer ring raceway Angle. The greater the Angle, the greater the axial load capacity. The largest amount of tapered roller bearings is single row tapered roller bearings. Double row tapered roller bearings of small size are used in the front wheel hub of the car. Four rows of tapered roller bearings are used in heavy machines such as large cold and hot rolling mills.

Structural characteristics of tapered roller bearings
1. Tapered roller bearings are separated bearings. In general, especially in the "Rolling Bearings Centripetal Bearing Tolerances", the outer ring and inner component of tapered roller bearings within the size range involved are 100% universal and interchangeable.
2. The Angle of the outer ring of tapered roller bearings and the diameter of the outer raceway have been standardized as well as the outer dimension. It is not allowed to change during design and manufacture. In order to make the taper roller bearing between the outer ring and the inner component can be used in the world.
3. Tapered roller bearings are mainly used for bearing combined radial and axial loads, which are mainly radial loads. Compared with angular contact ball bearings, the bearing capacity is large and the limit speed is low.

The influence of fitting accuracy of inner and outer rings of tapered roller bearings on bearing temperature rise
1. Through the intelligent tester, to cooperate with precision bearing temperature rise under the circumstance of change situation, understand the taper roller bearing inner and outer ring with precision change with temperature, the relationship between different matching precision and temperature change rule: : cooperate with have a direct impact on the temperature rise of the bearing running accuracy, temperature is too high may lead to bearing failure. The influence of fitting precision on temperature rise is different at different rotating speeds.
2. When the rotational speed of the tested part is in the range of 0~6 000 r/min and the matching state of the inner ring is constant, the equilibrium temperature of the tested part decreases first and then rises with the increase of the amount of clearance of the outer ring. And when the amount of interference of the inner ring is small, the change of the amount of clearance of the outer ring has a more significant effect on the temperature rise. When the matching state of the outer ring is constant, the equilibrium temperature of the measured component increases with the increase of the interference amount of the inner ring. And the temperature rising trend is faster in the low rotation speed area, which is more affected by the change of inner ring interference. With the increase of the clearance amount of outer ring (0~ 0.02mm), the equilibrium temperature decreases first and then rises, and the optimum clearance amount of about 0.01mm is obtained.
3. Various parameters of tapered roller bearings will affect the performance of bearings in the operation process. Within the speed of 0~6 000 r/min, the outer ring of the bearing should adopt clearance fit and the inner ring should adopt interference fit for the tapered roller bearing to be tested. At a certain speed, the influence of the fitting accuracy of the outer ring on the temperature rise will decrease with the increase of the interference of the inner ring.
4. Through analysis, it is known that the fitting accuracy of tapered roller bearings affects the temperature rise. Therefore, it is very important to choose a reasonable fitting value at different rotating speeds to reduce the temperature in the working process to improve the service efficiency and service life of bearings.

The price of tapered roller bearings
The price of tapered roller bearings is affected by many factors, such as market, material and quotation. If you want to know the specific price of tapered roller bearings, please contact us for an inquiry.

Tapered roller bearing supplier :BMB Bearing
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