Rolling bearing xaiv txheej txheem
Nrog rau txoj kev loj hlob ntawm kev lag luam, bearings tau siv ntau thiab ntau dua, thiab lawv tseem tab tom tsim. Lawv tau dhau los ua ib qho tseem ceeb ntawm cov khoom siv kho tshuab. Muaj ntau ntau hom bearings, thiab kev siv sib txawv yuav tsum muaj kev xaiv sib txawv rau cov kabmob. Kev xaiv ncej Nws yog ib qho nyuaj rau xaiv cov kabmob uas haum tshaj plaws ntawm txhua yam ntawm cov kabmob.
Rotating ceev
Nyob rau hauv tej yam load thiab lubrication tej yam kev mob, lub siab tshaj plaws ceev tso cai los ntawm dov bearings yog hu ua lub bearing txwv ceev. Kev sib hloov ceev yog cuam tshuam nrog ntau yam xws li hom kabmob, qhov loj me, qhov tseeb, kev tshem tawm, cov khoom siv tawb thiab cov qauv, cov txheej txheem lubrication, lubricant zog thiab ntau npaum li cas, load loj thiab kev taw qhia, thiab cov cua kub dissipation.
Qhov txwv ceev ntawm ntau yam bearings yog qhia nyob rau hauv parameter lub rooj ntawm ntau yam bearing specifications. Cov txiaj ntsig hauv lub rooj yog txiav txim siab raws li cov xwm txheej ntawm cov roj lubrication thiab roj lubrication. Nws yog haum rau qhov sib npaug dynamic load P Tsawg dua los yog sib npaug rau 0.1C; lub lubrication thiab txias txias yog ib txwm; lub radial bearing tsuas yog dais lub radial load; lub thrust bearing tsuas yog dais lub axial load nyob rau hauv cov xwm txheej ntawm nruj bearing lub rooj thiab ncej.
When the actual working conditions are different from the above, for example, when the bearing is under heavy load (P>0.1C) los yog ua ke load, qhov tso cai siab tshaj plaws ua hauj lwm ceev yuav xam raws li nram no:
Nmax Tsawg dua lossis sib npaug rau f1f2nlim
hauv cov mis
Nmax-- qhov xav tau kev sib hloov ceev raws li kev ua haujlwm tiag tiag ntawm cov kabmob, r / min
f1--load factor, in order to consider when the bearing works under the condition of equivalent load P>0.1C, vim muaj kev sib cuag nrog kev ntxhov siab, qhov nce ntawm tus nqi calorific, thiab kev ua kom tsis zoo ntawm lubricating tej yam kev mob, cov kev kho tsis haum rau qhov tsis muaj kev txwv ceev yog teev nyob rau hauv lub rooj.
f2--load faib coefficient. Txhawm rau txiav txim siab thaum cov kabmob nyob rau hauv kev sib xyaw ua ke, tus naj npawb ntawm cov khoom siv dov nce, qhov kev sib txhuam ntawm cov khoom dov thiab txoj kev sib tw nce, thiab kev sib txhuam thiab lubrication tej yam kev mob kuj deteriorated, ua rau txo qis ntawm kev txwv ceev. kho tsis tau teev nyob rau hauv lub rooj.
Nlim{0}}limit speed of bearing, r/min
Yog hais tias qhov tseeb ua hauj lwm ceev ntawm lub bearing tshaj qhov tso cai siab tshaj plaws ua hauj lwm ceev, ib co kev txhim kho kev ntsuas yuav tsum tau ua, xws li kev txhim kho lub lubrication txoj kev, teem ib tug zoo txias system, kev txhim kho cov bearing raug, tsim nyog nce bearing clearance, siv tshwj xeeb. bearing cov ntaub ntawv thiab Cov qauv tshwj xeeb tawb, thiab lwm yam.
Thaum xaiv hom kabmob raws li cov kabmob ceev, koj tuaj yeem xa mus rau cov ntsiab lus hauv qab no:
(1) Pob bearings muaj kev txwv siab dua thiab kev sib hloov qhov tseeb dua li cov menyuam bearings, thiab cov pob bearings yuav tsum nyiam ntawm kev kub ceev.
(2) Qhov me me ntawm lub kaum sab xis ntawm cov kabmob, qhov zoo dua rau lub nplhaib kom dais lub inertial centrifugal quab yuam ntawm cov khoom dov, yog li qhov txwv ceev ntawm cov kabmob thrust yog qis dua li ntawm cov kabmob radial, thiab ib leeg. -kab radial bearing yog zoo dua li ob-kab tus kheej-aligning bearing. Thaum ua hauj lwm ceev yog siab, yog hais tias lub axial load tsis loj, angular hu pob bearings yuav siv tau los dais ntshiab axial load.
(3) Nyob rau hauv kev kub ceev, bearings nrog tib lub puab txoj kab uas hla thiab me me txheej sab nraud yuav tsum tau xaiv. Thaum lub peev xwm bearing tsis txaus, dav series bearings lossis ob bearings tuaj yeem siv ua ke.
(4) Lub tawb khoom tso cai rau kev sib hloov ceev dua li lub tawb stamping.
Cov cai yooj yim yog siv los qhia txog lub puab kab, kab kab uas hla series, dav series thiab hom bearing, feem ntau mus txog tsib tus lej, raws li hauv qab no:
1) Sab hauv txoj kab uas hla ntawm cov kabmob yog qhia los ntawm thawj thiab thib ob tus lej los ntawm sab xis ntawm txoj cai yooj yim. Rau feem ntau siv bearings nrog puab txoj kab uas hla d=20~480mm, lub puab txoj kab uas hla feem ntau yog ib tug ntau yam ntawm 5. Ob tug lej no sawv cev rau cov quotient ntawm lub puab kab uas hla ntawm cov bearings muab faib los ntawm 5, xws li 04 rau d{{ 6}}mm; 12 rau d=60mm thiab lwm yam. Rau bearings nrog puab diameters ntawm 10mm, 12mm, 15mm thiab 17mm, lub puab txoj kab uas hla yog 00, 01, 02 thiab 03 nyob rau hauv ib theem zuj zus. Rau cov bearings nrog ib txoj kab uas hla sab hauv tsawg dua 10mm thiab ntau dua 500mm, lub puab kab sawv cev txoj kev yog txwv tsis pub, thov mus rau GB/T272-93.
2) Txoj kab uas hla ntawm cov kabmob (uas yog, cov kev hloov pauv ntawm sab nraud thiab qhov dav ntawm cov kabmob nrog tib lub qauv thiab tib txoj kab nruab nrab sab hauv) yog sawv cev los ntawm tus lej thib peb los ntawm sab xis ntawm txoj cai yooj yim. Piv txwv li, rau radial bearings thiab radial thrust bearings, 0, 1 txhais tau tias ntxiv lub teeb series; 2 txhais tau tias lub teeb series; 3 txhais tau tias nruab nrab series; 4 txhais tau tias hnyav series. Qhov sib piv loj ntawm koob yog qhia hauv daim duab hauv qab no. Cov kabmob thrust yog tib yam li cov kabmob radial tshwj tsis yog tias 1 yog siv los qhia txog lub teeb ntxiv.
3) Cov kab dav dav ntawm cov kabmob (uas yog, cov kev hloov pauv hauv cov kabmob dav nrog cov qauv zoo ib yam, sab hauv thiab txoj kab uas hla series) yog sawv cev los ntawm tus lej thib plaub los ntawm sab xis ntawm txoj cai yooj yim. Thaum qhov sib piv ntawm qhov dav thiab txoj kab uas hla series yog teev raws li 0 series (ib txwm series), qhov dav series code 0 tej zaum yuav tsis raug cim nyob rau hauv code rau feem ntau bearings, tab sis rau spherical roller bearings thiab tapered cov menyuam bearings, qhov dav series code 0 yuav tsum tau cim. . Txoj kab uas hla series code thiab dav series code yog sau ua ke raws li qhov loj series code.
4) Cov kabmob hom code yog sawv cev los ntawm thawj tus lej ntawm sab laug ntawm tus lej lej.
5) Bearing yam naj npawb:
0 txhais tau tias ob kab angular hu rau pob bearing
1 txhais tau tias nws tus kheej-aligning pob bearing
2 qhia tias spherical roller bearings thiab thrust spherical roller bearings
3 txhais tau tias tapered menyuam bearing
4 txhais tau tias ob kab sib sib zog nqus groove pob bearing
5 txhais tau tias thrust pob bearing
6 txhais tau hais tias sib sib zog nqus groove pob bearing
7 txhais tau tias angular contact bearing
8 txhais tau tias thrust cylindrical cov menyuam bearing
9 txhais tau hais tias ib kab tapered menyuam bearing
N txhais tau hais tias cylindrical roller bearing tsis muaj lub nplhaib sab nraud
NU txhais tau hais tias cylindrical roller bearing tsis muaj lub nplhaib sab hauv
NJ txhais tau hais tias lub nplhaib puab ib leeg cylindrical cov menyuam kabmob
NUP sawv cev rau cov menyuam kabmob cylindrical nrog ib tus tav ntawm lub nplhaib puab thiab ib tus tav tav ntawm sab nraud
NN stands rau ob kab cylindrical cov menyuam bearing
U txhais tau hais tias sab nraud spherical bearing
QJ txhais tau hais tias plaub-point sib cuag pob bearing
2. Post code
Cov ntawv tshaj tawm ntawm cov kabmob yog siv cov tsiaj ntawv thiab cov lej los qhia cov qauv, kev ua siab ntev thiab tshwj xeeb ntawm cov khoom siv ntawm cov kabmob, thiab lwm yam. Muaj ntau ntau lub npe tom qab. Cov hauv qab no yog qee cov npe siv feem ntau.
1) Cov txheej txheem sab hauv yog hais txog cov qauv sab hauv sib txawv ntawm tib hom kev coj tus kheej, uas yog sawv cev los ntawm cov ntawv ua raws li cov cai yooj yim. Piv txwv li, angular contact pob bearings nrog lub kaum sab xis ntawm 15 degree, 25 degree thiab 40 degree siv C, AC thiab B los qhia qhov txawv ntawm cov qauv sab hauv.
2) Qib siab kam ntawm cov bearings muab faib ua 2 qib, 4 qib, 5 qib, 6 qib, 6X qib thiab 0 qib, tag nrho ntawm 6 qib, los ntawm qib siab mus rau qib qis, thiab lawv cov lej yog / PZ, /P4, /PS, /P6, /P6X, thiab /P0. Ntawm cov chav kawm kam rau ua, chav kawm 6X tsuas yog siv tau rau cov menyuam bearings tapered; chav kawm 0 yog chav kawm zoo tib yam, uas tsis muaj cim nyob rau hauv cov kabmob code.
3) Feem ntau siv cov kabmob radial clearance series tau muab faib ua 1 pawg, 2 pawg, 0 pawg, 3 pawg, 4 pawg thiab 5 pawg, tag nrho ntawm 6 pawg, radial clearance yog los ntawm me me mus rau loj. Pab pawg 0 clearance yog ib pawg clearance, uas tsis yog cim nyob rau hauv bearing code, thiab tus so ntawm clearance pawg yog sawv cev los ntawm /C1, /C2, /C3, /C4, /C5 nyob rau hauv cov kabmob code raws.
3. Prefix code
Lub prefix code ntawm bearing yog siv los qhia cov sub-components ntawm bearing, uas yog sawv cev los ntawm cov tsiaj ntawv. Piv txwv li, L sawv cev rau lub nplhaib sib cais ntawm cov kabmob sib cais; K sawv cev rau lub cev dov thiab lub tawb sib dhos ntawm cov kabmob, thiab lwm yam.
Muaj ntau ntau hom dov bearings nyob rau hauv cov ntaub ntawv siv tau, thiab cov kabmob sib raug zoo kuj yog qhov nyuaj dua. Cov cai qhia saum toj no yog qhov yooj yim tshaj plaws thiab feem ntau siv ib feem ntawm cov kabmob code. Yog tias koj paub txog qhov no ntawm txoj cai, koj tuaj yeem txheeb xyuas thiab xaiv cov kabmob uas nquag siv.