The rotating shaft is a shaft that must be used to link the main parts of the product and is used to bear both bending moment and torque during rotating work. In daily products, as long as there is a certain force of rotation or flipping, the rotating shaft will be used. For example, the flipping of the upper and lower covers of a laptop requires a rotating shaft, as well as the previous flip phone, desk lamp, new folding mobile phone rotating shaft, TWS earphone charging box rotating shaft, etc. The application of rotating shafts can be seen everywhere in life. Therefore, it is particularly important to master the quality judgment of the rotating shaft.

There are four ways to judge the quality of the shaft:

1. Look at the shaft process

See if the surface of the shaft is smooth and flat. Generally, the shafts with better quality are more complete in craftsmanship. The appearance should be free of burrs, the electroplating layer should be strong, and there should be no black blocks. When closing and opening the rotating shaft, whether the torque is uniform or not, the unevenness will directly affect the lifespan, which also directly shows the level of craftsmanship of the rotating shaft manufacturer.

2. Look at the shaft material

The rotating shaft is the most used component of a finished structural part, so what material is used, whether it will rust or whether it is easy to wear, is the most important basis for judging the quality of the rotating shaft. The common high-quality rotating shafts are made of imported SK7 and stainless steel, which have strong wear resistance and can improve the anti-corrosion function of the rotating shaft, while the ordinary rotating shafts use inferior stainless steel materials or cut corners in the manufacturing process, resulting in the use of the rotating shaft for a period of time. rust or corrosion.

3. Test data of rotating shaft

The first two methods only use the surface to initially determine the quality of the rotating shaft. The most direct way is to determine the quality of a rotating shaft through experimental data. The shaft is usually made of high-quality materials and exquisite craftsmanship. The life test of the shaft can reach about 3W times, and the torque attenuation rate is within 20%. On the contrary, the ordinary low-quality shaft has a short service life and may easily break during use.

Fourth, look at the shaft brand

The establishment of a rotating shaft brand must first ensure quality selection. Famous brand, of course the quality is excellent. Therefore, when purchasing, it is best to choose a reputable shaft brand product.

The small shaft plays a big role. If the shaft is not purchased properly, it will directly affect the life and use experience of a finished product. Therefore, the following points should be paid attention to in advance planning in the purchase of rotating shafts.

Notes on shaft purchase:

1. Understand the qualification, economic strength and pre-sale and after-sale service of the shaft manufacturer. avoid unnecessary trouble

2. Ask for test reports and environmental protection reports to ensure that the quality of the shaft meets the requirements for use.

3. Be clear about the use requirements of purchasing shafts. Choosing the right one is not the higher the price, the better the quality. Reduce unnecessary waste.