There are many kinds of headstock bearing products, and many products do not have relevant parameters. More manufacturers choose to customize and purchase in bulk. In this case, it is very important to judge the qualified products that suit you. This is also a brief explanation for everyone in this issue. Let's see what methods are there to judge the quality of products.

1. If the headstock bearing manufacturer wholesales, you can first look at the outer packaging box of the bearing, which is generally white, blue, and red stripes at the bottom.

2. Check the production date of the bearing. If you open the bearing packaging box from the side, there is a production date and date code on the box.

3. Bearings manufactured after 2000 have barcodes on their packaging boxes.

4. Look at the origin, ball bearings are produced in Malaysia, Italy, France, and the United States (Bearings produced in the United States are generally only used locally in the United States); short cylindrical bearings are produced in Germany; angular contact ball bearings are produced in Austria; spherical roller bearings are produced in Malaysia (generally small 2315, 2316, 2318), Sweden (large models), Germany (large models); needle roller bearings are produced in Germany.

5. After the bearings are unpacked, large bearings are generally sealed plastic bags, and small bearings are plastic packaging paper. There is a layer of grease on the customized products of the card-type head bowl bearings. The true bearings are bright on the outside, without rust and pitting.

The service life of the bearing is related to three factors. One is its own quality. The second is the use scenario. The third is the installation steps. Improper use of these three factors 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 in identifying bearing quality.

1. Sense the bearing quality based on the surface

Many people say that as long as the bearing surface is bright, it is of good quality, which is wrong. The surface brightness should be a dark brightness, which is caused by whether the steel used in the bearing meets the standards, its cutting process and the cutting fluid used, among which the first two are the main ones.

2. Is the chamfer 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, indicating that it has been heat treated by quenching and other heat treatments to improve the bearing strength. Some people think that the chamfer is black and not good-looking because it is not fully processed. This is a misunderstanding.

3. One-piece cage is better than two-piece. Although the new process uses one-piece cage, it only saves materials, but the performance of rotation is worse than that of two-piece.