As a key component of rolling bearings, steel balls play a role in bearing and transmitting loads and motions in the bearing, and have a greater impact on the life of the bearing and vibration and noise.
Any point on the surface of the steel ball is the working surface that bears the load. It bears the variable load with indefinite period. The contact area is small and the contact stress is large. The stress condition of the steel ball is relatively bad, and it is easy to cause fatigue damage. The entire surface of the steel ball is both a processing surface and a supporting surface. Therefore, steel ball processing technology is also very unique and specialized in the machinery industry. It has very high requirements on raw materials, process technology, processing equipment, tooling and abrasives, and grinding fluids.
At present, the domestic steel ball technology level, equipment level, quality control level and tooling and abrasive level have reached or approached the international advanced level, management has become more refined and perfect, large-scale production and operation have been highlighted, and the total production volume has continued to expand.
The highest level of steel ball quality: mass production tolerance grade G5, complete specifications and materials, single-grain vibration up to 26 dB, life K value (the ratio of basic rated life test value L10t to basic rated life L10) reaches 12 or more.
The above is transferred from “Analysis of Bearings”
Post time: Dec-01-2021