Introduces a special steel ball bearing and performance

Introduces a special steel ball bearing and ball bearing performance more visible on the performance models, as the name implies, ball bearing is installed on the turboshaft ball, replace the position of the oil in the floating bearing. The advantages of ball bearing is just the opposite: floating bearing friction is smaller, turbo lag effect is lower, the power limit squeezing more advantageous; Can effectively to control the dynamics of turboshaft; Oil pressure and quality can be a little lower, indirectly increase the service life of the turbine. Its shortcomings are obvious, that is, life not as good as floating bearing, generally between 70000 and 80000 kilometers to the limit, and expensive maintenance cost, maintenance difficulties. However, due to the ball bearing in promoting motivation provides allure extremely, so the ball bearing is still a performance models on the mainstream of the equipment. Today the author to introduce the knowledge about special steel ball bearing and its product performance! The hardness of ball bearing performance: the retainer compared to low ball and ring, its material with metal ( Such as: medium carbon steel, aluminum alloy) Or non-metallic ( Such as: iron, dragon, PTEF, polymer materials) 。 Rolling bearing ( 滚动轴承) Journal bearing ( 轴颈轴承) The rotation of the frictional resistance is small, so the same speed, the temperature will be lower because of friction. Ball bearings are generally used in low load of mechanical equipment. Because of ball bearing load bearing area is small, appear easily in the case of high-speed serious mechanical damage, so often adopted in the heavy load of mechanical needle bearing to increase the bearing surface, and improve the efficiency of mechanical transmission, at the same time reduce the mechanical damage. Ball bearing has changed the way of bearing friction, adopts rolling friction, this way is more effective in reducing the friction between the bearing surface phenomenon, improve the service life of the fan bearing, thus to extend the service life of the radiator. Defect is process is more complex, higher cost, but also bring higher noise. Ball bearing steel, ball bearing pot is mainly used to manufacture all kinds of rolling bearing roller, such as ball bearings, roller, needle, inner and outer ring, etc. , is a special structural steel. Liquid rolling ball bearing in the work under the local alternating load, greatly contact stress between roller and ring, so the bearing steel with high hardness, grinding, enough fatigue strength, a certain toughness and corrosion resistance, good dimensional stability, etc. Because of its wear resistance characteristics, also used in the manufacture of precision measuring tool, cold punching mould, machine screw, diesel injector and diesel engine oil pump, etc. The composition characteristics of ball bearing steel is carbon content is high carbon, generally in 0. 95% ~ 1. About 1%, main alloy elements as collaterals, said chromium bearing steel. Adding silicon ( Si) , manganese, Mn) 、( Mo) , vanadium, V) And so on, in addition, the harmful impurity element sulfur ( S) , p ( P) For each control at zero. 02% and 0. Below 027%, because they will reduce the fatigue strength of bearing steel, affect the service life.