
徐州SKF轴承61912-ZN安装之初延长寿命的计算方式
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为了延长徐州SKF轴承的使用寿命,安装是必不可少的一步。如何提供安装精度直接影响轴承的使用寿命。因此,在安装轴承之前,首先要确定轴承的安装精度,然后寻找提高轴承安装精度的方法。InordertoprolongtheservicelifeofXuzhouSKFbearings,installationisanindispensablestep.Howtoprovideinstallationaccuracydirectlyaffectstheservicelifeofbearings.Therefore,beforeinstallingbearings,weshouldfirstdeterminetheinstallationaccuracyofbearings,andthenfindwaystoimprovetheinstallationaccuracyofbearings.(1)测量轴和轴承座孔的尺寸,以确定匹配精度(精度)。匹配要求如下:内环与轴采用过盈配合,过盈量为0~+4(轻载,高精度为0);外环与徐州SKF轴承座孔采用过盈配合,过盈量为0~+6(但在FR处采用角接触球轴承时,过盈量也会增加)。硒结束)。(1)Measurethedimensi***oftheshaftandbearingseatholestodeterminethematchingaccuracy(accuracy).Thematchingrequirementsareasfollows:interferencefitisadoptedforinnerringandshaft,andtheinterferenceamountis0~+4(lightload,highprecisionis0);interferencefitisusedforouterringandXuzhouSKFbearingseathole,andtheinterferenceamountis0~+6(butwhenangularcontactballbearingisusedatFR,theinterferenceamountwillalsoincrease).Seleniumends.(2)安装轴固定端前轴承:用干净的煤油彻底清洗轴承。用润滑脂润滑时,将含有3-5个百分点润滑脂(性质:透明无色液体)的有*机*溶剂注入轴承进行脱脂和清洗,然后用油枪将定量润滑脂注入轴承(轴承空间体积的10-15个百分占比)。此方法检查***规定的预紧力是否发生了显著变化(即使徐州SKF轴承正确,预紧力也可能因配合或保持架变形而发生变化)。(2)Installthefrontbearingofthefixedendoftheshaft:cleanthebearingthoroughlywithcleankerosene.Whenlubricatedwithgrease,organicsolventcontaining3-5%grease(nature:transparentandcolorlessliquid)isinjectedintothebearingfordegreasingandcleaning,andthenquantitativegreaseisinjectedintothebearing(10-15%ofthespacevolumeofthebearing)withanoilgun.Thismethodcheckswhetherthepre-tighteningforcestipulatedbylawhaschangedsignificantly(evenifXuzhouSKFbearingsarecorrect,thepre-tighteningforcemayalsochangeduetomatchingorcagedeformation).(3)将进口轴承轴总成装入座孔:将座孔加热至20-30摄氏度,将轴承轴总成连续轻压入座孔,调整前盖,将前盖拧紧至0.02-0.05,以轴承座外端为基准。当刀头接触轴颈表面时,用转轴测量其跳动量,刻度盘误差小于10。头部位于轴上,与后排座椅孔的内表面接触。徐州SKF轴承座前后座孔的同轴度由转轴测量。(3)Installtheimportedbearingshaftassemblyintotheseathole:heattheseatholeto20-30degreesCelsius,pressthebearingshaftassemblyintotheseatholecontinuouslyandlightly,adjustthefrontcover,tightenthefrontcoverto0.02-0.05,andtaketheouterendofthebearingseatasthereference.Whenthecutterheadcontactsthesurfaceofthejournal,itsrunoutismeasuredwitharotatingshaft,andtheerrorofthedialislessthan10.Theheadislocatedontheaxleandcontactstheinnersurfaceoftherearseathole.ThecoaxialityoffrontandrearseatholesofXuzhouSKFbearingseatismeasuredbyrotatingshaft.(4)自*由端轴承有选择地***在偏移位置,安装在轴承座后支撑位置,尽可能地偏移圆度和同轴度偏差。(4)Theself*endbearingsareselectivelypositionedintheoffsetpositionandinstalledinthebacksupportpositionofthebearingseattooffsettheroundnessandcoaxialitydeviationasfaraspossible.在主机上安装轴承后,如果测量轴承主轴的径向跳动,可以发现每一个旋转的测量值都有一定的变化;连续测量时,可以发现在某一个旋转后,变化会近似地重复。Afterthebearingisinstalledonthemainengine,iftheradialrunoutofthebearingspindleismeasured,itcanbefoundthatthemeasuredvalueofeachrotationhasacertainchange;whencontinuousmeasurement,itcanbefoundthatafteracertainrotation,thechangewillapproximatelyrepeat.如果对徐州SKF轴承主轴施加适当的预紧力,转速将逐渐升高,接近工作转速。为了达到轴承的“磨合”效果,可以提高主轴旋转精度。IfproperpreloadingforceisappliedtoXuzhouSKFbearingspindle,therotationalspeedwillgraduallyincrease,approachingtheworkingspeed.Inordertoachievethe"running-in"effectofbearings,thespindlerotationaccuracycanbeimproved.文章来自:徐州SKF轴承www.wh-文章来自:徐州INA轴承a-文章来自:徐州NSK轴承***:524085168电话:0510-81207777手机:13311666672/13395185757)