1. selection of high quality bearings

1, look.

Observe the machined surface of the miniature bearing, the surface of the inferior miniature bearing is rough and the chamfer is uneven. High quality miniature bearing surface processing fine and smooth, uniform chamfer

2, turn

One hand holds the inner ring of the miniature bearing, and the other hand rotates the outer ring of the miniature bearing. The inferior miniature bearing can feel the presence of foreign matter in the miniature bearing channel when rotating, and the choice is not smooth. High-quality miniature bearings rotate smoothly and smoothly, without blocking feeling

3, listen.

Inferior bearings have "chacha" friction sound, while high-quality miniature bearings do not have the choice of miniature bearing configuration. Generally, the shaft is supported by two miniature bearings in the radial and axial directions. At this time, the miniature bearing on one side is called a fixed-side miniature bearing, which bears both radial and axial loads and plays the role of relative axial displacement between the fixed shaft and the miniature bearing box. The other side is called the free side, which only bears the radial load and can move relative to the axial direction, so as to solve the interval error of the telescopic part of the shaft and the installation bearing caused by the temperature change.

2. reasonable installation

When in use, it is necessary to keep the bearing and the surrounding environment clean and dry. A lot of fine dust is invisible to our naked eye, but as long as it enters our bearings, it will increase the wear and noise of the bearings.

Use the installation carefully. Thin-walled bearings have high precision and are not suitable for strong stamping during installation; they are not suitable for direct hammering of bearings. Otherwise, it will affect the service life of the bearing, and the more serious situation will be the direct damage of the bearing.

The installation of bearings in the summer needs to do a good job of rust prevention. Because in the summer hand sweat mostly, directly by hand to take the bearing, may cause the bearing external rust, thin-walled bearing section is thin, such as rust will affect the life. It is recommended to wear gloves, or fully wash the sweat on the hands, and apply high-quality mineral oil before operating.

Proper lubrication of 3.

Not all kinds of lubricating oil can be used. Everyone needs to use lubricating oil that meets the regulations. Not letting this lubricating oil not only fails to make thin-walled bearings work better, but also makes thin-walled bearings work. Bad situations, such as excessive heating of thin-walled bearings due to inappropriate lubricating oil.

It is not to say that the more lubricating oil used, the better, because this excessive lubricating oil will produce a certain resistance to the work of the thin-walled bearing, which will reduce the working efficiency of the thin-walled bearing. The use of this lubricating oil is too small, because this will cause the lubrication effect of the thin-walled bearing to be poor, which will aggravate the friction generated during the operation of the thin-walled bearing, and cause the wear of the thin-walled bearing to increase.

It is necessary to replace the lubricating oil regularly, because the thin-walled bearing works for a long time, the lubricating oil will be polluted by some impurities such as dust, and the lubricating oil will also deteriorate.

Regular cleaning of 4.

When removing the thin-walled bearing for inspection, make a good appearance record of the bearing. In addition, confirm the amount of remaining lubricant and sample the lubricant before cleaning the bearing. The cleaning of the bearing is divided into rough washing and fine washing, and a metal mesh frame can be placed at the bottom of the container in use.

Rough washing, in the oil with a brush or other grease or adhesive. At this time, if the thin-walled bearing is rotated in oil, the rolling surface will be damaged due to foreign matter.

Fine washing, in the oil slowly turn the bearing, must be carefully carried out.

5. attention to rust

Surface cleaning. According to the material of the rust object and the conditions at that time to select the appropriate method, commonly used solvent cleaning method, chemical treatment cleaning method and mechanical cleaning method; dry. After the surface is cleaned, it can be dried with filtered dry air, wiped with clean gauze, or dried with a dryer at 120~170 ℃.