Date: 2013-08-22

SKF Bearing Materials and performance

SKF bearings rings and rolling elements, side repeatedly suffered high contact pressure, along with a side sliding rolling contact. Maintain, side rings and rolling elements on both sides, or the party sliding contact side suffered tension and contractile force. Thus, the bearing rings, rolling elements and maintain shelf item, performance, request is as follows.
Ferrule, the requested performance of the item of rolling: rolling fatigue strength and hardness of the high resistance to abrasion
Properties: dimensional stability, good mechanical strength to maintain the frame data requested
In addition, also need good processability. Based on the usefulness of the type, as well as the request of their impact resistance, heat resistance, good erosion-resistant.
: Rings and rolling usually use carbon chromium bearing steel rings and rolling. Local SKF bearings, the use of JIS SUJ2 steels. The large bearings use SUJ3.
The SUJ2 the chemical composition in the world, has been normalized as a bearing. For example: AISL52100 (USA) DIN100Cr6 to the West Germany BS535A99 (UK) are the same kinds of steel.
Conditions need further impact-resistant chromium steel, chromium molybdenum steel, nickel-chromium-molybdenum steel, as SKF bearing information use to take carburizing quenching, the steel from the outside to the proper depth of a softening layer. Have the appropriate depth of softening fine Organizations, suitable hardness, appearance and hardness of the heart the carburizing bearing, have excellent impact resistance than the use of bearing steel bearing, a separate carburizing bearing steel chemical composition.
Bearing the implementation of the vacuum degassing solve, so use high purity, oxygen content, and good quality. And then take the appropriate thermal solution, the amount of rolling fatigue life of the bearing significant progress.
Maintain frame: stamping maintain frame, the use of low-carbon steel. Based on the usefulness of different, but also the use of brass, stainless steel plate. Cut to maintain the information of the frame, the use of high-strength brass, carbon steel, in addition also to the use of the decomposition of resin.  

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