进口轴承的接触疲劳寿命对钢结构的均匀性非常敏感。逐步清洗（减少钢中杂质和夹杂物的含量）使江苏INA轴承非金属夹杂物和碳化物均匀分布在钢中，提高了轴承钢的接触疲劳寿命。Thecontactfatiguelifeofimportedbearingsisverysensitivetotheuniformityofsteelstructure.Thegradualcleaning(reducingthecontentofimpuritiesandinclusi***insteel)makesthenon-metallicinclusi***andcarbidesevenlydistributedinthesteeloftheJiangsuINAbearingandimprovesthecontactfatiguelifeofthebearingsteel.江苏INA轴承钢的显微***应均匀分布在均匀碳化物颗粒的回火马氏体基体上，使轴承钢具有所需的性能。高碳轴承钢中的主要合金元素是碳、铬、硅、锰和钒。ThemicrostructureofINAbearingsteelinJiangsushouldbeevenlydistributedontemperedmartensitematrixofhomogeneouscarbideparticles,sothatbearingsteelhastherequiredproperties.Themainalloyingelementsinhighcarbonbearingsteelarecarbon,chromium,silicon,manganeseandvanadium.自20世纪70年代以来，随着经济的发展和工业技术的进步，江苏INA轴承的应用范围不断扩大。国际贸易的发展促进了轴承钢国际化和新技术、新技术标准的发展和应用。Since1970s,withthedevelopmentofeconomyandtheprogressofindustrialtechnology,theapplicationscopeofINAbearingsinJiangsuhasbeenexpanding.Thedevelopmentofinternationaltradehaspromotedthedevelopmentandapplicationofbearingsteelinternationalizationandnewtechnologyandnewtechnologystanda***.技术和新设备，以及***率、高质量、低成本的支撑技术和装备应运而生。GaoJie网和优质轴承钢生产线分别建在日本和德国。钢产量迅速增加，钢的质量和疲劳寿命大大提高。Technologyandnewequipment,aswellasefficient,high-quality,low-costsupporttechnologyandequipmentemergeasthetimesrequire.GaoJienetworkandhighqualitybearingsteelproductionlinearebuiltinJapanandGermanyrespectively.Theoutputofsteelhasincreasedrapidly,andthequalityandfatiguelifeofsteelh***ebeengreatlyimproved.在日本和瑞典生产的江苏INA轴承钢的氧含量小于10ppm。80年代后期，日本山阳特钢公司的***水平达到5.4ppm，达到了真空重熔轴承钢的水平。TheoxygencontentofJiangsuINAbearingsteelmanufacturedinJapanandSwedenislessthan10ppm.Inthelate80s,theadvancedlevelofShanyangspecialsteelcompanyofJapanreached5.4ppmandreachedthelevelofvacuumremeltingbearingsteel.1，抗振刚度1,antivibrationstiffness为了保证机床的加工质量，主轴系统必须具有足够的刚度，否则会产生较大的回波误差甚至颤振。江苏INA轴承抗振性是指抵抗强迫振动和自激振动的能力。主轴组件的抗振性取决于主轴和轴承的刚度和阻尼。采用预紧滚动轴承，可有效提高主轴系统的刚度。Inordertoensurethemachiningqualityofthemachinetool,thespindlesystemmusth***eenoughstiffness,otherwiseitwillproducelargerechoerrororevenchatter.ThevibrationresistanceofINAbearingsinJiangsuistheabilitytoresistforcedvibrationandselfexcitedvibration.Thevibrationresistanceofthespindleassemblydependsonthestiffnessanddampingofthespindleandbearing.Therigidityofthespindlesystemcanbeeffectivelyimprovedbyusingpretighteningrollingbearings.2，噪音2,noise在高速磨床中，磨头轴承的噪声是整机噪声的主要组成部分。应选用低噪声滚动轴承。Inhighspeedgrinder,thenoiseofgrindingheadbearingisthemaincomponentofthewholemachinenoise.Lownoiserollingbearingsshouldbeselected.3，寿命与承载力3,lifeandbearingcapacity对于普通机床来说，江苏INA轴承主轴组件的寿命主要是指保持主轴精度的时限。因此，轴承的精度要求满足主轴装配寿命的要求。对于重型机床或重型切削机床，首先应考虑轴承的承载能力。Forordinarymachinetools,thelifeofJiangsuINAbearingspindleassemblymainlyreferstothetimelimitformaintainingspindleaccuracy.Therefore,theaccuracyrequirementsofbearingsmeettherequirementsofspindleassemblylife.Forhe***y-dutymachinetoolsorhe***ydutycuttingmachines,bearingcapacityofbearingshouldfirstbec***idered.4，速度与成功4,speedandsuccess随着科学技术的发展，机床主轴转速越来越高，速度范围越来越大。因此，高速轴承的稳定性要求越来越高。江苏INA轴承主轴轴承温升是影响轴承转速的重要因素。一般而言，轴承类型、公差等级、配置方式、间隙（预载荷）尺寸、润滑剂和润滑方法可以在一定程度上提高滚动轴承的高速性能。Withthedevelopmentofscienceandtechnology,thespindlespeedofmachinetoolishigherandhigher,andthespeedrangeisbiggerandbigger.Therefore,thestabilityrequirementsofhighspeedbearingsaregettinghigherandhigher.ThetemperatureriseofINAbearingspindlebearinginJiangsuisanimportantfactoraffectingbearingspeed.Generallyspeaking,bearingtype,tolerancegrade,configurationmode,clearance(preload)size,lubricantandlubricationmethodcanimprovethehighspeedperformanceofrollingbearingtoacertainextent.文章来自：江苏SKF轴承www.wh-文章来自：江苏INA轴承a-文章来自：江苏NSK轴承)