Vim li cas bearings poob?
Tsis txaus deg hardness
Cov tsos mob:
Oval hnav cov cim ntawm txhua lub pob txoj haujlwm, polished nto, thiab txhais kom meej;
Feem ntau muaj ib lub voj voog ntawm cov khib nyiab xim av ncig;
Ua rau:
Kev vibration nyob rau hauv lub tshuab nyob ruaj ruaj ua rau micro-hloov ntawm cov ntsiab lus dov thiab raceways;
Thaum cov kabmob tsis tig, cov yeeb yaj kiab roj tsis tuaj yeem tsim los tiv thaiv kev sib tw;
Kev daws:
Txo lossis nqus cov kev co sab nraud;
Siv cov roj nplua nyeem nrog cov tshuaj tiv thaiv hnav;
Kub kub
Cov tsos mob:
Cov nplhaib sab nraud, dov cov ntsiab lus, thiab cov tawb ploj los ntawm kub mus rau xiav;
Kub siab tshaj 400 degree F anneal lub nplhaib thiab dov cov ntaub ntawv, txo cov kabmob muaj peev xwm, thiab ua rau qaug zog ntxov ntxov;
Hauv qhov xwm txheej hnyav, cov kabmob tuaj yeem deform;
Qhov kub thiab txias tuaj yeem ua kom puas los yog rhuav tshem cov roj nplua nyeem;
Ua rau:
High hluav taws xob thiab thermal loads;
Txoj kev kub tsis raug;
Tsis txaus cua txias lossis lubrication thaum thauj lossis ceev ntau dhau;
Kev daws:
Kub los yog overload tswj;
Txoj kev cua sov kom raug;
Kev ua kom txias ntxiv;
Lub nplhaib sab nrauv tawg
Cov tsos mob:
Feem ntau, cov kab nrib pleb txuas mus rau qhov sib npaug thiab qee qhov tawg tawg feem ntau tshwm sim los ntawm axial loads, feem ntau tshwm sim me ntsis saum nruab nrab ntawm txoj kev sib tw;
Irregular load qauv ntawm lub nplhaib sab nraud;
Ua rau:
Kev txhawb nqa tsis txaus ntawm lub rooj zaum ntawm lub nplhaib;
Kev daws:
Txhim kho qhov zoo ntawm bearing installation;
Ua raws li tus neeg muag khoom cov lus qhia kev teeb tsa thiab tau txais cov lus pom zoo tsim nyog;
Angular sib txawv
Cov tsos mob:
Ntawm lub nplhaib uas tsis yog-rotating Hnav cov cim tsim ntawm txoj kev sib tw uas tsis sib npaug ntawm ntug ntawm txoj kev sib tw;
Ua rau:
Khoov ncej;
Burrs lossis plua plav ntawm lub xub pwg ntawm lub ncej lossis cov kabmob vaj tse;
Lub axis thiab lub rooj zaum ncej tsis nyob ntawm txoj cai kaum;
Qhov saum npoo ntawm cov txiv ntoo xauv tsis yog ntawm txoj cai kaum rau lub axis;
Kev daws:
Xyuas cov ncej, flange viav vias lub rooj thiab lub rooj zaum bearing;
Siv ib lub ntsiab lus rotating threads los yog polished threads ntawm non-hardened shafts, thiab tsuas yog polished threads ntawm hardened shafts;
Siv high-precision locking ceev;
Cov qhab nias
Cov tsos mob:
Pitting;
Rough dov ntsiab los yog raceways;
Ua rau:
Thaum lub load me me thiab lub lubrication tsis zoo, cov ntsiab lus dov swb rau ntawm txoj kev sib tw;
Qee zaus tshwm sim thaum thaj chaw thauj khoom me me dhau lawm: cov ntsiab lus dov nres nyob rau hauv qhov chaw tsis muaj kev thauj khoom thiab nrawm dua thaum nkag mus rau thaj chaw thauj khoom;
Kev daws:
Xaiv cov kabmob uas muaj peev xwm thauj khoom tsawg;
Cov kabmob preload;
Txo cov kabmob clearance;
Txhim kho lubrication zoo;
Tight haum
Cov tsos mob:
Cov cim hnyav hnyav ntawm cov khoom dov hauv qab ntawm txoj kev sib tw;
Ua rau:
Lub caij dov ntau dhau ntawm kev ua haujlwm kub thaum qhov cuam tshuam haum tshaj qhov radial clearance;
Kev ua haujlwm txuas ntxiv nyob rau hauv cov xwm txheej no ua rau kom nrawm nrawm thiab qaug zog;
Kev daws:
Txo tag nrho kev cuam tshuam los ntawm kev txhim kho qhov haum ntawm cov kabmob mus rau lub ncej thiab lub tsev;
Xav txog kev ua haujlwm kub;
Nce radial clearance nyob rau hauv kev xaiv bearing;
Axial tawg
Cov tsos mob:
Ib nrab lossis ua tiav axial tawg ntawm lub nplhaib puab;
Cov npoo me ntsis ntawm cov pob txha tawg qhia tau hais tias qhov tawg tau tshwm sim hauv kev ua haujlwm thiab yog cyclical (cov npoo tawg tuaj yeem tawg tom qab ua haujlwm ntev);
Ntws-edged tawg qhia tias tawg thaum lub sij hawm disassembly;
Ua rau:
bearing slippage;
Lub nplhaib puab dov ntawm ncej;
lubrication tsis zoo;
nruj heev haum nrog ncej;
Grooved ncej;
Tawm ntawm puag ncig;
Kev sib txhuam nrog ib puag ncig;
Kev daws:
Txhim kho lubrication los ntawm kev ntxiv additives los yog nce roj ntim;
Xaiv kom haum;
Zam kev sib txhuam;
Muab cov rooj zaum zoo dua;
Xav txog kev kho cua sov tshwj xeeb ntawm lub nplhaib puab;
Kev qaug zog
Cov tsos mob:
Feem ntau pom tau tias yog chipping, manifested li tawg ntawm qhov chaw khiav thiab tom qab tshem tawm cov khoom me me dispersed ntawm lub nplhaib puab, lub nplhaib sab nraud lossis cov khoom dov;
Chiping yog maj mam thiab, ib zaug pib, kis nrog kev ua haujlwm;
Ib txwm nrog los ntawm kev nce kev vibration tseem ceeb;
Ua rau:
Bearings nyob rau hauv kev pab tshaj li xam qaug zog lub neej;
Kev daws:
Hloov cov kabmob thiab / lossis xav txog kev tsim kho dua tshiab nrog cov kabmob uas muaj kev suav ntev dua lub neej qaug zog.
Brinell indentation
Cov tsos mob:
Brinell indentation tshwm sim raws li qhov chaw ntawm txoj kev sib tw, ua kom muaj kev vibration (suab nrov);
Kev mob hnyav Brinell tuaj yeem ua rau qaug zog ntxov ntxov;
Ua rau:
Ntau dhau static load ntawm cov kabmob;
Kev cuam tshuam loj heev ntawm cov kabmob;
Siv lub axes thaum txhim kho cov kabmob;
Tso los yog ntaus cov khoom sib dhos;
Siv lub zog rau lub nplhaib sab nraud thaum nias lub bearings rau ntawm ncej;
Kev daws:
Xav txog tus nqi thauj khoom zoo li qub thaum xaiv cov kabmob;
Xaiv cov cuab yeej tsim nyog los txhim kho cov kabmob thiab tsuas yog siv lub zog rau lub nplhaib haum rau cov kabmob siab;
Kev kis kab mob
Cov tsos mob:
Rolling ntsiab thiab raceways yog sunken, ua rau vibrations;
Ua rau:
Plua plav, av thiab cov khoom siv abrasive los ntawm huab cua hauv thaj chaw ua haujlwm tsis huv;
Cov tes qias neeg lossis cov cuab yeej;
Cov ntaub ntawv txawv teb chaws nyob rau hauv lubricants los yog ntxuav cov kuab tshuaj;
Kev daws:
Ntxuav qhov chaw ua haujlwm, cov cuab yeej, khoom siv thiab tes kom txo tau qhov kev pheej hmoo;
Khaws cov kabmob qhov chaw nyob deb ntawm kev sib tsoo;
Unpack tus thawj bearing ntim kom txog thaum installation;
Hauv qhov chaw ua haujlwm tsis huv, xav txog kev siv cov khoom sib khi;
Lubricant tsis ua haujlwm
Cov tsos mob:
Fade ntawm dov cov ntsiab lus thiab raceways Xim (xiav / xim av);
Kev hnav ntau dhau ntawm cov khoom dov, cov nplhaib thiab cov tawb vim yog overheating thiab kev puas tsuaj loj;
Ua rau:
Tsawg roj nplua nyeem;
Kev kub ntau dhau txo cov roj nplua nyeem zoo;
Kev daws:
Siv cov roj nplua nyeem tsim nyog thiab tsim nyog;
Xyuas kom cov kabmob haum zoo;
Tswj preload kom txo tau cov kabmob kub;
Corrosion
Cov tsos mob:
Liab / xim av stains los yog deposits ntawm dov ntsiab, raceways thiab tawb;
Ua kom muaj kev vibration, ua rau hnav;
Nce radial clearance los yog poob ntawm preload;
Ua rau:
Cov kabmob raug corrosive kua lossis cua;
Kev daws:
Direct corrosive kua deb ntawm qhov chaw bearing;
Siv tag nrho cov kabmob kaw;
Hauv qhov xwm txheej tsis zoo, xav txog kev siv cov ntsaws ruaj ruaj sab nraud;
Grooving
Cov tsos mob:
Axially parallel xim av cov cim npog feem ntau lossis tag nrho ntawm txoj kab kev sib tw;
Ua rau:
Kev tsis tu ncua ntawm kev hloov pauv lossis ncaj qha tam sim no;
Uniform qis tam sim no;
Kev daws:
Tiv thaiv tam sim no los ntawm kev sib kis ntawm cov kabmob los ntawm kev sib tsoo los yog insulating nws;
Siv hluav taws xob insulated bearings;
Ntau dhau load
Cov tsos mob:
Kev hnav hnyav ntawm cov khoom dov
Kub kub
Diffused fatigue thaj chaw (spalling)
Ua rau:
Tshaj load ntawm bearings
Kev daws:
Txo cov loads
Rov tsim dua nrog cov kabmob loj dua
Flange tawg
Cov tsos mob:
Ib nrab los yog ua tiav tawg lossis tawg ntawm kev txhawb nqa flanges
Ua rau:
Unacceptably siab axial loads
Kev them nyiaj yug tsis txaus flange
Axial vibration loads
Mounting puas
Kev daws:
Xyuas kom zoo flange txhawb tsim
Khaws cov khoom thauj hauv qhov txwv;
Ua raws li cov lus qhia thiab cov txheej txheem installation kom raug;
Zaus hnav
Cov tsos mob:
Kev hnav ntau zaus ua rau cov hlau zoo, uas tawm hauv cov xim av pom tseeb tom qab oxidation;
Mating nto hnav ua rau muaj suab nrov thiab overflow teeb meem;
Ua tau qaug zog tawg;
Muaj peev xwm floating bearing muaj nuj nqi tsis ua haujlwm;
Ua rau:
Lub zog-txog haum yog xoob dhau, thiab muaj kev hloov pauv me ntsis ntawm cov mating qhov chaw;
Kev daws:
Ua raws li tus neeg muag khoom cov lus qhia kev teeb tsa thiab tau txais cov lus pom zoo kom haum;
Thaiv
Cov tsos mob:
Ib feem los yog loj nto Accumulated vuam thiab sib sib zog nqus khawb ntawm cov tav thiab cov menyuam nto;
Kuj tseem muaj roj nplua nyeem coking hauv cheeb tsam no;
Ua rau:
Lub lubrication tsis raug ntawm kev thauj khoom siab thiab kev kub ceev (cov roj nplua nyeem thiab kev ua haujlwm viscosity tsawg dhau);
Lub lubrication tsis raug ntawm kev thauj khoom siab thiab qis qis (tsis muaj kua nplaum zaj duab xis ntawm cov menyuam nto thiab cov tav);
Kev puas tsuaj preload vim cua sov diffusion;
Cov menyuam skew vim yog raceway hnav thiab nplhaib tilting;
Tshaj axial load ntawm cylindrical roller bearings;
Tsis-perpendicular haum;
Tshaj axial preload rau saum npoo;
Kev daws:
Txhim kho lubrication (nce viscosity, EP additives thiab kom muaj nuj nqis);
Xyuas kom muaj kev hloov kho kom raug;
Rov qab load
Cov tsos mob:
Grooving bands tshwm sim ntawm cov khoom tshwm sim los ntawm cov khoom dov rau ntawm ntug sab nrauv ntawm txoj kev sib tw;
Ua rau:
Angular contact pob bearings yog tsim los thauj khoom hauv ib qho kev taw qhia axial nkaus xwb;
Thaum raug rov qab loads, elliptical contact nto ntawm lub nplhaib sab nraud yog luv luv los ntawm lub xub pwg qis ntawm lub nplhaib sab nraud;
Qhov tshwm sim yog siab dhau thiab kub siab, ua raws li kev vibration thiab qaug zog ntxov ntxov;
Kev daws:
Xyuas kom zoo installation ntawm angular hu pob bearings;
