INA bearing is primarily restricted by the temperature rise attributable to the inner friction heating of the INA bearing. When fag bearing exceeds a certain limit, the INA bearing will not proceed to rotate attributable to burns. The restrict velocity of the INA bearing is the restrict value of steady rotation, with out friction and heat, in any other case, it will cause burns. Subsequently, measures to regulate deformation are proposed, akin to spin quenching, mould quenching, and controlling the best way the elements enter the oil to evaporate the potential of the fabric; then again, the automation stage and stability of the heat treatment are improved, and the stability of the optimized course of is totally ensured, And achieved the product quality dispersion goal is very small (or zero), and carried out special carbonitriding and quenching to increase the floor retained austenite content material, improve the surface stress state, and vastly improve the carbon-nitrogen of the gearbox Co-osmosis with out reducing the appearance. Based mostly on hardness, grinding know-how, line measurement know-how, fault prognosis know-how, increase the content material of retained austenite, deformation ought to be studied together with particular tools and products.

The limit speed of the INA bearing will depend on varied elements, equivalent to the sort, measurement and accuracy of the INA bearing, the lubrication methodology, the quality and quantity of the lubricant, the material and sort of the cage, and the load circumstances. Each INA bearing dimension desk lists the limit speeds of assorted INA bearings that use grease lubrication and oil lubrication (oil bath lubrication). This worth indicates that the usual design of INA bearings is the restrict value when the speed is reduced underneath general load conditions (C / P> = 13, Fa / Fr <= about 0.25). In addition, depending on its type and brand, lubricants may be superior to other properties but are not suitable for high-speed rotation.

The quenched construction of INA bearing steel consists of quenched martensite, a small quantity of undissolved secondary carbides and about 12% to 14% of retained austenite. Quenched martensite and retained austenite are unstable structures. The decomposition of martensite throughout tempering causes the volume of steel to shrink, while the decomposition of retained austenite causes the quantity of steel to develop.

As the tempering temperature increases, the quantity of transformation and decomposition of retained austenite will improve. Below the condition of making certain the required hardness of the method, the tempering temperature ought to be appropriately elevated to decompose the residual austenite and transform it into martensite with a larger specific volume. This organization can correspondingly improve the volume of the workpiece, that is, increase the quantity of outer diameter grinding. This methodology can save INA bearing ring components that turn into waste below normal grinding conditions.


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