According to the relevant data, the damage during the installation of the rolling bearing accounts for 20% of the damage of the bearing. How can the damage during the installation of the bearing be reduced? The following is a detailed introduction to the specific requirements of the site when installing the bearing. The site must be kept dry and clean to prevent iron filings, sand, dust, moisture, etc. from entering the bearing.
Commonly used installation tools for rolling bearings include hand hammers, copper rods, sleeves, special backing plates, screw clamps, presses, etc., with vernier calipers, micrometers, dial gauges, etc., but different tools should be selected according to different bearing models.
After selecting the correct tools, the bearing can be installed. When installing, pay attention to whether there are bruises, rust layers, abrasion particles, sand, dust and dirt. If there are any, it will cause installation difficulties. It must be kept imported. The bearing assembly surface and the surface of the matching parts are clean.
In addition to the cleanliness of the assembly surface of the rolling bearing and the surface of its mating parts, also pay attention to whether there is a rust layer in the journal, the surface of the housing hole of the bearing housing, the end face of the shoulder, and the connecting parts such as bushes, washers, end covers, etc. If there is, you can use a fine file to remove it, polish it with a fine emery cloth, and then install it.
1. In terms of bearing speed, the bearing is determined according to the bearing type, size, accuracy, cage type, load, lubrication method, and cooling method.
2. The installation and disassembly of the bearing requires frequent disassembly and installation in specific applications to ensure that the inspection and maintenance can be carried out according to its location. Bearings whose inner and outer rings can be installed separately, such as cylindrical bearings, needle roller bearings, and tapered bearings are very suitable for this occasion. The tapered hole type self-aligning ball bearing and self-aligning roller bearing also simplify the installation procedure with the help of the sleeve.
3. In some cases, rolling bearings need to be preloaded to increase rigidity. This procedure is usually used for deep groove ball bearings, centripetal thrust ball bearings and tapered roller bearings. The inner and outer rings are offset, the shaft is bent, and the shaft or bearing box tolerance changes. , Matching errors will cause the eccentricity of the inner and outer rings. In order to prevent the eccentric angle from being too large, self-aligning ball bearings, self-aligning roller bearings, or self-aligning bearing seats are better choices. The voice frequency and torque, and the movable bearing are produced according to high-precision standards, so the voice and torque are small. Deep groove ball bearings and cylindrical roller bearings are used together for occasions that have special requirements for low noise and low torque.
Post time: Jan-19-2021