Precautions for installation of precision angular contact ball bearings

Mar 08 2024

First of all, the installation environment of precision angular contact ball bearings is crucial. The installation work should be carried out in a dust-free and clean room to avoid contamination of the bearings by dust and impurities. At the same time, the selection of bearings must be carefully selected to ensure that their accuracy and quality meet the requirements. As an important part of the bearing, the parallelism of the spacer ring should be controlled within a very low range to ensure the stable operation of the bearing.

Secondly, cleaning before installation is equally important. Bearings should be cleaned to remove surface oil and impurities. When cleaning, pay attention to the upward direction of the inner ring slope to ensure that the hand feels flexible and does not feel stagnant. After cleaning and drying, an appropriate amount of lubricating oil should be applied to ensure the normal operation of the bearing. For bearings lubricated with oil mist, a small amount of oil mist oil should be added to meet their special lubrication needs.

During the installation process, special tools should be used to ensure uniform force, and knocking is strictly prohibited. Knocking may cause the bearing to be deformed or damaged, seriously affecting its service life and performance. Therefore, extreme care should be taken during installation and correct operating procedures should be followed.

In addition, the storage of bearings is also an important factor affecting their service life. The storage environment should be kept clean and ventilated to avoid erosion by corrosive gases. At the same time, the relative humidity should be controlled below 65% to prevent the bearings from getting damp and rusting. Bearings stored for a long time should be rust-proofed regularly to ensure their good use condition.

In order to improve the installation and fitting accuracy of precision angular contact ball bearings, we need to use precise measurement methods and tools to measure the inner bore and outer circle of the bearing. By comprehensively analyzing the measurement data, we can accurately match the dimensions of the shaft and seat hole to ensure a perfect fit between the bearing, shaft and seat hole. During the measurement process, attention should be paid to maintaining the same temperature conditions as when measuring the bearing to eliminate the influence of temperature on the measurement results.

In addition, in order to improve the matching effect, the surface roughness of the shaft and seat hole matching the bearing should be minimized. This helps reduce friction and wear, increasing bearing life and performance. At the same time, during actual assembly, we should make orientation marks on the outer circle and inner hole of the bearing and on the corresponding surfaces of the shaft and seat hole. These marks help us align the maximum deviations of the two matching parties in the same direction during assembly, thereby partially offsetting the deviations of both parties and improving assembly accuracy.

Finally, surface strengthening measures on mating surfaces are also an effective way to improve mating accuracy. For example, by sandblasting or using a precision plunger with a slightly larger diameter to plug into the primary inner hole, the hardness and wear resistance of the surface can be enhanced, further improving the fitting accuracy and service life of the bearing.

In summary, the installation and use of precision angular contact ball bearings require following a series of strict steps and precautions. By carefully selecting, cleaning, installing and storing bearings, as well as using precise measurement methods and surface strengthening measures, we can ensure that the high-precision, high-speed and low-vibration characteristics of the bearings are fully utilized, providing stable operation of various high-end mechanical equipment. Strong guarantee.