Overview
Bearing rings are important part of rolling bearing, its weight is about 60%-70% of the total bearing.
Bearing races have forging, cold extrusion, warm extrusion, pipe and bar, etc., types, forged bearing rings are occupied 85% of the total number of blank rings.
It has the following types of bearings: Deep groove ball bearings, Spherical roller bearings, Cylindrical roller bearings, Tapered roller bearings.
Bearing blank processing is the first step for bearing production process, the quality of the ring blank is good or bad, the level of productivity, that will the have an important impact on the quality of products, performance, life and the economic benefits of enterprises. Because the size of the blank quality (including the blank forming method) will determine the bearing material utilization, the internal quality of ring including the density of material, metal fiber streamline distribution, grain size and deformation heat treatment) will has a greater impact on bearing life. Blank size dispersion and geometry precision is the main reason for rejection rate, unavailable automated production, impact of follow-up process processing quality (error copy) the main reason. Blank processing technology, ring rolling equipment accuracy and performance determine the quality of blank. Bearing blank will affect
turning and machining accuracy, and the quality of turning will affect grinding accuracy and efficiency.