- Bearing material

Customer requirements of the bearing is good precision, good performance, long service life, etc, and materials used in the appropriate or not, not only directly affect the bearing of life, and affect the machining dimension stability; Therefore, material selection and processing, is a manufacturer of bearing is very important. 1. Ring and rolling body material of rolling bearing ring and rolling body, each other on the small contact area with a lot of contact stress, due to the stress suffered by rotary and repeated. Therefore, the material must have high hardness, resistance to rolling fatigue, abrasion loss and size stability higher characteristic mainly. In particular, involves the impact rolling fatigue life with strong, such as non-metallic inclusions in steel. In the nonmetallic inclusions, high hardness of oxide dielectric in content, easy to become the starting point of fatigue failure, therefore, use of non-metallic inclusions and less clean steel are necessary. In general, the rolling bearing ring and rolling body, is not only a surface its internal also need hardening, known as the hardening treatment, the hardness of HRC58 ~ HRC65, the use of material is given priority to with high carbon chromium bearing steel. One of the most commonly used for bearing steel (2 AfSl - 52100; JlS - SUJ2; DlN 100 Cr 6) , while large bearing for 3 kinds of bearing steel ( SUJ3) , its chemical composition in table 8 - 1. 2. Cage material retainers, can withstand must have suffered in the rotary vibration, the strength of the shock load, and smaller ring friction roller, light weight and can withstand and require bearing operating temperature. Used in the small and medium-sized bearing cage of materials, in addition to using 0. 1% level of low carbon cold rolled or hot rolled steel plate, depending on the application need, use brass or Tian Tie series of stainless steel plate. Part of coining cage is used to load change is big is concerned, the whole soft nitriding process, so that the cage through the salt bath later increase its costs resistance itself. In addition, can penetrate the salty form of synthetic resin materials are widely used in cage. Commonly used in glass fiber reinforced the heat resistance of polyethylene imine ( Polyamide) Resin. Synthetic resin material cage has light weight, corrosion resistance, the attenuation and lubrication performance also has the features of good, keep the material chemical composition. A: on bearing ( Deep groove ball bearing) Of ABEC mean next article: deep groove ball bearings with grease or oil lubrication good