How to identify qualified headstock bearing products?

There are many kinds of headstock bearing products, many of which do not have relevant parameters, and more manufacturers choose to carry out personal customization and related batch purchase. In this case, it is very important to judge the qualified products that are suitable for them. This is also a simple explanation for the big family in this issue to see what methods are available to judge the quality of the products.

1. The manufacturer of the headstock bearing can look at the outer packing box of the bearing first, which is generally white, with a blue background and a red stripe at the bottom.

2. Look at the production date of the bearing. If the packaging box of the bearing is opened at the side, there is the production date and date code on the box.

3. The packaging box of bearings manufactured after 2000 has barcode.

4. According to the origin, the origin of ball bearings: Malaysia, Italy, France, and the United States (bearings made in the United States are generally only used locally in the United States); Short cylindrical bearing origin: Germany; Angular contact ball bearing origin: Austria; Spherical roller bearing origin: Malaysia (generally small 2315, 2316, 2318), Sweden (large model), Germany (large model); Place of origin of needle bearing: Germany.

5. After the bearing is unpacked, the large bearing is generally sealed with plastic bags, and the small bearing is plastic wrapping paper. There is a layer of grease on the customized product of the cartridge type headstock bearing. The real bearing is bright and free of rust and pitting.

The service life of bearing is related to three factors. First, its own quality. The second is the use scenario. The third is the installation steps. Improper use of the three reverse faces will cause serious damage, or greatly shorten the service life of the bearing and reduce the working efficiency of the equipment. The following are three misunderstandings about bearing quality.

1. Feel the bearing quality according to the surface

Many people say that as long as the bearing surface is bright, it is good quality, which is wrong. The brightness of the surface should be black, which is caused by whether the steel used in the bearing is up to the standard, its cutting process and the cutting fluid used, among which the former two items are the main ones.

2. Whether the chamfer is bright

The customized chamfer of the motorcycle head bowl bearing does not determine the quality of the bearing, but it shows the manufacturing process of the bearing. The chamfer is black, which means that the strength of the bearing is improved after heat treatment such as quenching. Some people think that the chamfer is black and ugly, which is not completely processed. This is a mistake.

3. The integrated cage is better than the two bodies. Although the new technology uses the integrated cage, it only saves materials, but its performance on rotation is worse than the two bodies.