Rolling at work, due to the sliding friction caused by bearing heating and wear, especially in high temperature operating conditions, the effect of centrifugal force of inertia exacerbated friction, wear and heat, can cause severe burns or broken cage, causing the bearing does not work correctly. Therefore, the requirements except the holder of material has a certain strength, it must also good thermal conductivity, low coefficient of friction, wear resistance, impact toughness, less dense, and the linear expansion coefficient is close to the rolling element. In addition, the need to withstand punched retainer stamping more complex deformation, but also requires a material having good processability. 08,10 or 08A1 usually cold rolled steel sheet manufacturing various types of stamping cage, the technical requirements should be consistent with the provisions YB / T5059-1993: The surface quality as a group, polishing, trimming; dimensional accuracy is high accuracy; mechanical properties as "extremely soft"; grain size of 6 to 9. Steel shall conform to the technical requirements of GB / T3275-1991: The surface quality as a group; dimensional accuracy is level; drawing level Z level.

Using carbon steel strip or plate (1Cr18Ni9, Cr18Ni9,3Cr13 and 4Cr13 etc.) stamping cage, suitable corrosion-resistant bearing steel bearings working conditions and environment