How to judge whether it conforms to the specification through the appearance of the sliding bearing

Nowadays, sliding bearings play an important role in all areas of our lives. Today, the sliding bearing manufacturers will introduce to you how to judge whether the sliding bearing conforms to the specification through the appearance of the sliding bearing when selecting the sliding bearing. Let's take a look together.

Nowadays, many sliding bearings are inferior. What does that mean? That is to say, it is a different standard sliding bearing. There is no mold guide sleeve that meets the application specifications. The main reason is that the factory inspection is not rigorous. In this case, the sliding bearing becomes a defective product. Such a sliding bearing assumes that we use it. , Then such a sliding bearing is usually damaged within a few days of application, or it may not be applied at all, and it will cause mechanical damage in the application. Therefore, such a sliding bearing that does not meet the specifications of the rolled sliding bearing must not be used. We want to use sliding bearings, it is best to use imported sliding bearing products, because imported sliding bearing companies have strict inspections and comparisons, and usually do not reveal quality problems. Of course, there are exceptions to oil-containing sliding bearings. We must completely prevent us from buying inconsistent Standard sliding bearings, then you should learn to distinguish the quality of sliding bearings.

The appearance inspection of the sliding bearing should be carried out under astigmatism, and the appearance, cracks and other parts of the sliding bearing shall be carefully checked. Let's explain the detailed method below. This method is not only used for imported sliding bearings, but also can identify whether imported sliding bearings of other brands meet the specifications.

1. Maintain the riveting or welding quality of the frame, mainly check whether the rivet head is offset, skewed, loose, lack of meat or "double eyelids", whether the welding position is accurate, whether the welding point is too large or too small, and whether the welding is not strong Or welding too much causes the phenomenon of jamming the tumbling body.

2. Rust, black skin and pitting, the latter two are the shortcomings of simply storing moisture and dirt, and the easiest to develop into rust. Rust is a source of pollution that causes poor installation, early wear and fatigue. Severe corrosion will cause the sliding bearing to be scrapped.

3. All kinds of cracks, such as raw material cracks, forging cracks, heat treatment cracks and grinding cracks, etc., these cracks will become the source of stress concentration and rapidly expand in the course of the future sliding bearing homework, causing the sliding bearing to break and affect the life of the sliding bearing. And the safety of homework has a great impact.

4. Skinning and folding. The two disadvantages are not fused firmly with the base metal, and there are often different levels of decarburization or carbon-lean phenomena around them. The material simply collapses, dents or wears, which affects the life and accuracy of the sliding bearing. Very disadvantageous.

5. Various mechanical scars, such as abrasion, scratches, crushing, bumps, etc., will all cause poor installation of the sliding bearing, resulting in eccentric load and stress concentration, resulting in a drop in rotation accuracy and application life.

6. Others, such as poor typing quality, blurred or damaged handwriting, should be considered defective, and severe ones may not be inspected.