Thaum cov kabmob rotates nyob rau hauv lub load, vim hais tias lub raceway nto ntawm lub nplhaib thiab lub dov nto ntawm lub dov cov ntsiab lus yog tas li mus rau alternating loads, txawm tias cov kev siv yog ib txwm, cov ntses zoo li kev puas tsuaj (hu ua ntses scale puas) yuav tshwm sim rau lub raceway nto thiab dov nto vim cov khoom qaug zog.ua peeling los yog tev).Tag nrho cov kiv puag ncig ua ntej xws li dov qaug zog kev puas tsuaj tshwm sim yog hu ua "(kev qaug zog)" lub neej ntawm cov kabmob.Txawm hais tias cov bearings zoo ib yam hauv cov qauv, qhov loj me, cov khoom siv, cov txheej txheem ua haujlwm, thiab lwm yam, tseem yuav muaj qhov sib txawv loj hauv lub neej (kev qaug zog) ntawm cov qauv bearing thaum tig nyob rau hauv tib lub sijhawm.Qhov no yog vim cov ntaub ntawv qaug zog nws tus kheej yog discrete thiab yuav tsum tau txiav txim siab los ntawm ib tug statistical foundations.Yog li ntawd, thaum lub batch ntawm zoo tib yam bearings yog tig sib cais nyob rau hauv tib yam kev mob, tag nrho cov rotations uas 90% ntawm cov bearings tsis raug kev txom nyem los ntawm dov qaug zog kev puas tsuaj yog hu ua "lub sij hawm rated lub neej ntawm cov kabmob" (uas yog, lub neej ntawm kev ntseeg siab yog 90%).Thaum tig ntawm qhov ceev ceev, tag nrho cov sij hawm tig tuaj yeem qhia tau.Txawm li cas los xij, hauv kev ua haujlwm tiag tiag, kev puas tsuaj tshwm sim uas tsis yog dov qaug zog tuaj yeem tshwm sim.Cov kev puas tsuaj no tuaj yeem zam tau los ntawm kev xaiv cov kabmob kom raug, kev teeb tsa thiab lubrication.Basic dynamic load rating Basic dynamic load ntsuam xyuas qhia cov kabmob muaj peev xwm tiv taus dov qaug zog (piv txwv li load peev).Nws yog hais txog ib tug ntshiab radial load ntawm ib tug tej yam magnitude thiab kev taw qhia (rau radial bearings).Lub nplhaib puab tig thiab lub nplhaib sab nraud yog tsau (los yog lub nplhaib sab hauv Raws li qhov xwm txheej ntawm lub nplhaib sab nraud tig), qhov kev ntsuas lub neej nyob rau hauv cov khoom no tuaj yeem ncav cuag 1 lab revolutions.Qhov yooj yim dynamic load ntsuam xyuas ntawm radial bearing yog hu ua radial yooj yim dynamic load ntsuam xyuas, qhia los ntawm Cr, thiab nws cov nqi yog nkag mus rau hauv lub bearing loj rooj (qhia los ntawm C nyob rau hauv cov nram qab no mis).

Cov qauv kev ntsuas lub neej yooj yim (2) sawv cev rau cov qauv ntsuas kev ntsuas lub neej ntawm cov kabmob;cov mis (3) sawv cev rau lub neej mis qhia nyob rau hauv lub sij hawm thaum lub bearing ceev yog tsau.(Tag nrho cov kev hloov pauv) L10 = (C) PP……………(2) (lub sij hawm) L10k =……………(3) 10660n ( ) CPP: yooj yim ntsuas lub neej, 106 revolutions: theem pib ntsuas lub neej, h: Sib npaug dynamic load, N{kgf}: Basic dynamic load ntsuam xyuas, N{kgf}: Kev sib hloov ceev, rpm: Lub neej Performance index L10pnCPL10k pob bearing…………P = 3 roller bearing…………P = 310 yog li ntawd, raws li cov kev siv ntawm cov kabmob, piv txwv li qhov sib npaug dynamic load yog P thiab qhov kev sib hloov ceev yog n, ces qhov yooj yim ntsuas dynamic load C ntawm cov kabmob yuav tsum tau ua kom tau raws li qhov tsim lub neej tuaj yeem xam los ntawm Equation (4 ).Xaiv cov kabmob uas ua tau raws li tus nqi C los ntawm cov kabmob loj los txiav txim siab qhov kabmob loj C = P (L10k Cov qauv kev suav yog raws li hauv qab no: L10k = 500fhf………………(5) Lub neej coefficient: fh = fn…………(6C P Ceev coefficient: = (0.03n) p………………(7)-1fn=( )500x60n106Siv daim ntawv suav [reference picture], fh, fn thiab L10h tau yooj yim.Thaum xaiv bearings, lub neej qaug zog yog txhob txwm txhim kho.Nws yog uneconomical xaiv bearings loj thiab lub zog ntawm lub ncej, Stiffness, installation qhov ntev, thiab lwm yam yog tsis tas raws li qaug zog lub neej ib leeg.Bearings siv nyob rau hauv ntau yam machinery muaj ib tug benchmark tsim lub neej, uas yog, lub empirical qaug zog lub neej coefficient, raws li nyob rau hauv tej yam kev mob ntawm kev siv.Thov saib cov lus hauv qab no.

n 1.5 10 0.9 0.8 0.7 0.6 0.5 0.4 0.35 0.3 0.25 02019018017 016 015

n 10 20 30 40 50 70 100 200 300 500 1000 2000 3000 5000 10000

0.6 0.7 0.8 0.9 10 1.5 2.0 2.5 3.0 3.5 4.0 5.0 6.0

100 200 300 400 500 700 1000 2000 3000 5000 10000 20000 30000 50000 100000h10h1.4 1.3 1.2 5.500 1.0. 0.45 0.4 0.35 0.3 0.25 0.20.190.1810 20 40 50 70 100 200 300 500 1000 2000 3000 5000 10000 nn0 .62 0.7 0.6 0.9 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.71.81.92.0 2.5 3.0 3.5 4.0 4.5 4.9100 200 300 010 000 300 300 000 10000 20000 30000 50000 100000h 10h

[Ball Bearing] Speed ​​Life Speed ​​Life [Roller Bearing] Correspondence Table of Experienced Fatigue Life Coefficient fh thiab Siv Machinery Table 3 Cov xwm txheej fh Tus nqi thiab siv Machinery ~ 3 2 ~ 4 3 ~ 5 4 ~ 7 6 ~ Tsis txhob siv ntau zaus los yog rau Lub sijhawm luv luv Kev siv ntau zaus, tab sis nws yuav tsum tau ua kom ntseeg tau tias kev ua haujlwm tsis tas mus li, tab sis lub sijhawm ua haujlwm ntev dua 8 teev hauv ib hnub, lossis kev ua haujlwm tas mus li 24 teev ntev, thiab tsis tso cai rau kev ua haujlwm. vim raug xwm txheej.Cov khoom siv me me xws li lub tshuab nqus tsev vacuum thiab lub tshuab ntxhua khaub ncaws tsis raug tso tseg;cov cuab yeej hluav taws xob yog dov cov menyuam txoj kab uas hla lub cev muaj zog rau cov tshuab ua liaj ua teb thiab cov tshuab cua txias hauv tsev;me me motors rau kev tsim kho machinery;cranes;general cargo starters;iav puag;tsheb;escalator conveyor siv;of elevator Hoobkas motors;tshuab dhos;cov cuab yeej siv dav dav;vibrating npo;crushers;sib tsoo log;Centrifugal separator;cov khoom siv cua txias;kiv cua bearings;woodworking tshuab;loj motors;neeg nrog caij tsheb qag crane nkoj;compressor;tseem ceeb iav ntaus ntawv mining crane;punch inertia log (flywheel);lub ntsiab lub cev muaj zog rau tsheb: locomotive qag, papermaking machinery kais dej khoom;Cov cuab yeej siv fais fab;Cov cuab yeej siv dej hauv av.