Problems Needing Attention During Installation Of Centripetal Thrust Ball Bearing
Problems Needing Attention During Installation Of Centripetal Thrust Ball Bearing
2021年12月26日
Problems Needing Attention During Installation Of Centripetal Thrust Ball Bearing
Problems Needing Attention During Installation Of Centripetal Thrust Ball Bearing
2021年12月26日

How To Do Regular Maintenance After Installation Of Rolling Bearing

Rolling Bearing

According to the relevant data, the damage during the installation of rolling bearing accounts for 20% of the bearing damage. How can we reduce the damage during the installation of bearings? The following is a detailed introduction to the specific requirements for the site when installing the bearing. The site must be kept dry and clean to prevent iron filings, sand, dust and moisture from entering the bearing.

The common installation tools of rolling bearing include hammer, copper rod, sleeve, special backing plate, screw mosquito fixture, press, etc. the measuring tools include vernier caliper, micrometer, dial indicator, etc., but different tools should be selected according to different bearing models.

After selecting the correct tool, the bearing can be installed. During installation, pay attention to whether there are bumps, Rolling Bearing rust layers, wear debris, sand particles, dust and soil. If any, it will cause installation difficulties. It is necessary to keep the assembly surface of imported bearing and the surface of matched parts clean.

In addition to the cleaning of the assembly surface of rolling bearing and the surface of matched parts, pay attention to whether there is corrosion layer on the surface of journal, bearing seat shell hole, shoulder end face, and connecting parts such as Rolling Bearing bushing, washer, end cover, etc?

If any, it can be filed off and polished with fine emery cloth before installation.

How To Do Regular Maintenance After Installation Of Rolling Bearing

1. In terms of bearing speed, the bearing is determined according to the type, size, accuracy, cage type, load, lubrication mode, Rolling Bearing cooling mode and other factors.

2. For the installation and disassembly of bearings, they need to be removed and installed frequently in specific applications to ensure that they can be inspected and repaired according to their location. Bearings with separate inner and outer rings, such as cylindrical bearings, needle roller bearings and conical bearings, are very suitable for this occasion. With the help of the shaft sleeve, the installation procedure of the taper hole type self-aligning ball bearing and self-aligning roller bearing is also simplified.

3. In some cases, preloading shall be applied to the rolling bearing to increase the rigidity. This procedure is usually used for the offset of the inner and outer rings of deep groove ball bearing, centripetal thrust ball bearing and tapered roller bearing, shaft bending, the change of tolerance of shaft or bearing housing, and matching error will lead to the eccentricity of the inner and outer rings.

In order to prevent excessive eccentric angle,

self-aligning ball bearing, self-aligning roller bearing, or self-aligning bearing seat are better choices. Voice frequency and torque, dynamic bearings are manufactured according to high-precision standards, so voice and torque are small. Deep groove ball bearings and cylindrical roller bearings are used for occasions with special requirements for low noise and low torque. Acquisition of preload

The preload can be obtained by grinding the end face of a ferrule in the bearing, or placing two spacer rings with different thickness between the inner and outer rings of a pair of bearings to clamp the bearings together so that the steel ball is in close contact with the raceway.

The preload has a great impact on the service life of the bearing. According to relevant data, when the bearing is equipped with 0.012mm interference, the service life is reduced by 38%, and when there is 0.016mm interference, the service life is reduced by 50%; When the bearing is equipped with a clearance of 0.004mm, the service life decreases significantly.

When there is a clearance of 0.008mm, the service life decreases by 70%. Therefore, it is very important to select the preload reasonably. Generally, small preload should be selected for high speed and large preload should be selected for low speed. At the same time, the preload shall be slightly greater than or equal to the axial working load.