Thrust bearing. Angular Sib cuag Bearings. Pob thrust bearing

2024 Tus sau: Howard Calhoun | [email protected]. Kawg hloov kho: 2023-12-17 10:28

Bearings yog cov cuab yeej siv cuab yeej siv uas txhawb nqa tig qag thiab shafts. Lawv muaj peev xwm coj radial thiab axial loads ncaj qha rau ntawm lub qag lossis ncej, thiab tom qab ntawd hloov mus rau thav duab, vaj tsev lossis lwm qhov chaw ntawm cov qauv. Lub luag haujlwm ntawm cov kabmob tib lub sijhawm yog tuav cov ncej hauv qhov chaw, tso cai rau nws yooj yim viav vias, tig lossis txav mus rau linearly nrog tsawg zog poob. Kev ua tau zoo, kev ua tau zoo thiab, tau kawg, lub zog ntawm lub tshuab yog nyob ntawm qhov zoo ntawm cov cuab yeej no.

Type of bearings

Raws li txoj cai ntawm kev ua haujlwm, txhua yam khoom siv tau muab faib ua roj-dynamic, hydrostatic, gas-static, hydrodynamic, sib nqus, zawv zawg thiab dov. Ob hom kawg no feem ntau yog siv hauv kev tsim kho tshuab. Cov kabmob dov muaj ib lub tawb thiab ob lub nplhaib uas cais lawv. Ib qho zawj khiav raws sab nraud ntawm lub nplhaib puab thiab sab hauv ntawm lub nplhaib sab nraud - qhov no yog txoj hauv kev uas cov khoom siv dov (cov yob lossis cov khoom) yob thaumntaus ntawv siv.

Raws li kev xaav ntawm lub load, radial (rau radial thiab me me axial load), thrust (rau axial load), thrust-radial (rau axial thiab me me radial load) thiab angular hu bearings (rau combining axial thiab radial load) muab faib.

Ib-kab, ob-kab kab thiab ntau kab yog qhov txawv ntawm cov kab rau cov pob lossis cov menyuam. Nyob ntawm lub peev xwm los them rau cov misalignments uas twb muaj lawm, lawv muab faib ua cov bearings uas tsis yog-tus kheej-aligning, uas tso cai rau kev sib nrig sib misalignment ntawm lub rings mus txog yim degrees, thiab tus kheej-aligning (misalignment mus txog plaub degrees).

Symbol

Lavxias teb cov cim ntawm cov khoom siv no muaj cov cim qauv raws li GOST 3189-89, nrog rau cov chaw tsim khoom cov cai. Yog li, cov cim suav nrog xya tus lej ntawm lub npe tseem ceeb (yog tias qhov tseem ceeb ntawm cov paib yog xoom, nws tuaj yeem raug txo mus rau ob lub cim) thiab ib qho ntxiv nyob rau sab xis / sab laug ntawm lub ntsiab. Yog tias nws nyob rau sab laug, nws ib txwm sib cais los ntawm "-" (dash), thiab yog tias nws nyob rau sab xis, nws pib nrog tsab ntawv. Kev nyeem ntawv yeej ib txwm ua los ntawm sab xis mus rau sab laug, txawm tias rau radial lossis thrust bearings.

GOST tau sau kom npaj cov cim cim hauv ib ntu. Yog li, thawj zaug ntawm qhov dav (ib tus lej) yog qhia, tom qab ntawd tsim ntau yam (ob tus lej), tom qab ntawd ib hom kabmob (ib tus lej), cov kab ntawm kab (ib tus lej) thiab lub cim.sab hauv txoj kab uas hla (ob tug lej).

Yuav ua li cas thiaj siv tau qhov twg?

Muaj qee lub tshuab uas tsis muaj qhov sib hloov. Cov khoom xws li nruas, levers, log, qag, ncej, thiab lwm yam yog xav tau - txhua tus neeg ua haujlwm nrog tsheb paub qhov no. Yog li, tsis muaj bearings ntawm no nws ua tsis tau. Txhua lub tsheb xav tau kev saib xyuas zoo thiab kho lub sijhawm, yog li cov cuab yeej no yuav tsum tau hloov pauv ib ntus. Tab sis lub thrust bearing tsis yog tsuas yog ib tug indispensable attribute ntawm lub tsheb, nws yog siv nyob rau hauv metallurgical, fais fab khoom, mining machinery. Cov qauv tsim no tso cai rau txhawm rau txhim kho qhov nrawm ntawm qhov tshwj xeeb, yog li lawv feem ntau siv hauv centrifuges, tsheb log, cab iav, spindles thiab ntau dua.

pob thiab cov menyuam thrust khoom

Lub pob thrust bearing yog tsim los nqa axial loads thiab tsis yog-tus kheej-aligning. Lawv tsim cov khoom siv ib leeg uas pom tau tias muaj kev thauj khoom axial ib sab, thiab cov khoom siv ob kab pom tau tias muaj ob sab. Cov txheej txheem zoo li no yog siv rau hauv cov ncej ntsug, jacks, rotating chaw ntawm cov cuab yeej siv tshuab txiav hlau.

Thrust roller bearing yog siv thaum muaj qhov loj axial load. Cov cuab yeej no tuaj yeem yog peb hom:

• nrog tapered rollers - tsim los ua hauj lwm nyob rau hauv tsis tshua muaj loads, siab rotational speeds, shocks;
• ccylindrical rollers - siv los ua haujlwm ntawm qhov nrawm, tab sis nrog cov khoom tseem ceeb;
• nrog cov menyuam kheej kheej - muaj qhov sib txawv ntawm tus kheej, tuaj yeem nqa cov axial thiab radial tseem ceeb.

Roller thrust bearing yog siv nyob rau hauv thrust blocks ntawm tho mills, extruders, hnyav loaded ntsug ncej, alternators. Tsis tas li ntawd, nws yog ib feem ntawm kev sib tw ntawm cov khoom siv hlau.

Angular contact bearings

Cov khoom siv no kuj tau siv ntau yam kev lag luam: tshuab thiab lub tank tsim, tshuaj lom neeg kev lag luam thiab lwm yam. Cov txheej txheem no tuaj yeem pom ob hom kev thauj khoom ib zaug: ob qho tib si axial thiab radial. Nws qhov siab tshaj plaws tus nqi ncaj qha nyob ntawm lub kaum sab xis uas cov ntsiab lus dov tuaj rau hauv kev sib cuag nrog cov raceways. Nws muaj peev xwm siv lub angular contact bearing muaj plaub-point contact. Txawm li cas los xij, nws yuav tsum tau muab sau tseg tias nyob rau hauv kev lag luam kev lag luam, ib kab thiab ob kab yog siv dav tshaj plaws.

Ntau yam ntawm kev sib cuag angular bearings

Cov nodes tuaj yeem ua rau ntau qhov sib txawv. Lub angular contact pob bearing tuaj yeem qhib lossis muaj lub tshuab ntxhua khaub ncaws tiv thaiv lossis tiv thaiv lub foob. Plaub-taw tes tiv tauj cov cuab yeej tau faib cov nplhaib sab nraud lossis sab hauv thiab tsim nyog rau kev thauj khoom axial. Angular contact pob bearings feem ntau nruab nrog lub tawb ua los ntawmiav-filled polyamide. Tab sis kuj tseem muaj cov txheej txheem tsim nrog tooj dag dotted lossis stamped steel tawb. Xws li bearings perceive radial thiab axial unilateral load. Nyob rau hauv lub puab los yog sab nplhaib muaj ib tug bevel nyob rau sab ntawm lub dov cov ntsiab lus, yog li feem ntau tus naj npawb ntawm rollers nyob rau hauv no version ntawm lub ntaus ntawv yog ntau tshaj li tus naj npawb ntawm cov khoom nyob rau hauv lub coj angular contact structural unit. Cov kabmob no muaj peev xwm nqa tau ntau dua li cov kabmob radial ntawm tib qhov loj.

Angular contact roller bearing feem ntau muaj cov khoom dov ntawm hom conical. Vim qhov chaw ntawm cov chais mus rau qhov axis ntawm kev sib hloov ntawm ib lub kaum ntse ntse, cov cuab yeej no muaj peev xwm pom tau cov khoom sib xyaw ua ke. Nyob rau tib lub sijhawm, kev sib cuag angular tapered bearing muaj qhov tso cai qis dua li lub cylindrical cov menyuam sib dhos. Qib ntawm kev lees txais ntawm axial loads yog txiav txim siab los ntawm lub kaum sab xis: nrog rau nws qhov nce, lub radial load txo, thiab vim li ntawd, qhov zoo ntawm axial load nce. Yog tias koj xav siv cov kabmob zoo li no, koj yuav tsum ua kom paub tseeb tias tsis muaj qhov tsis zoo ntawm cov kabmob cov kabmob thiab cov ncej axis uas lawv tau nruab.

Roller Angular Contact Taper Options:

• 7000 - main;
• 27000 - siab taper kaum;
• 97000 - ob kab;
• 77000 - plaub kab.

Hom 27000 thiab 7000

Tsim los rau kev nkag siab ntawm radial thiab axial unilateral loads. Cov txheej txheem zoo li no yuav tsum tau hloov kho ntawm axial clearances thiab kev teeb tsa ntawm cov nplhaib sab nraud - ob qho tib si thaum lub sijhawm teeb tsa thiab lub sijhawm ua haujlwm.

Type 97000

Cov khoom siv no tuaj yeem nqa ib sab thiab ob sab radial thiab axial loads ib txhij. Yog hais tias nws yuav tsum tau hloov lub radial los yog axial clearance, qhov kev ncua deb ntawm lub nplhaib ntsia nyob rau hauv nruab nrab ntawm lub puab rings yog av nyob rau hauv lub bearing. Qhov siab tshaj plaws nyob rau hauv cov qauv chav tsev ntawm hom no yog 1.7 lub sij hawm siab tshaj qhov tso cai rau ib kab bearings.

Type 77000

Cov khoom siv ntawm hom no yog tsim los nqus cov radial loj thiab me me ob sab axial loads. Xws li cov qauv sib dhos tuaj yeem tiv taus ntau lub zog radial ntau dua li cov kab sib txuas.

Kev xaiv xaiv

Thaum xaiv hom thiab qhov loj ntawm lub cuab yeej, xav txog cov hauv qab no:

• tus yam ntxwv ntawm kev thauj khoom (kuj hloov pauv, poob siab, kev vibration, tas li);
• required resource (in lab revolutions or hour);
• load kev taw qhia thiab tus nqi (axial, radial, ua ke);
• ib puag ncig kev mob (plua plav cov ntsiab lus, kub, acidity, av noo);
• zaus ntawm kev sib hloov ntawm lub nplhaib sib dhos;
• cov kev cai tshwj xeeb uas nyob ntawm tus qauv tsim ntawm cov kabmob (yuav tsum tau qhov ntev, qhov sib txawv ntawm tus kheej, txo suab nrov, thiab lwm yam).

Dimensions thiab raug cov chav kawm

Cov khoom siv zoo li no muajloj series. Los ntawm tag nrho qhov ntev, lawv muab faib ua hnyav / nruab nrab / lub teeb / lub teeb ntxiv / lub teeb ntxiv, thiab los ntawm qhov dav - rau hauv qhov dav / dav / ib txwm / nqaim. Feem ntau yog hom nruab nrab, lub teeb thiab lub teeb ntxiv.

Lawv faib cov chav kawm raug ntawm cov txheej txheem: super-precision / precision / siab / nce / ib txwm. Lawv kuj tsim bearings nrog cov chav kawm raug hauv qab ib txwm (qhov tsis raug tshaj plaws) lossis siab dua super-precision (qhov tseeb tshaj plaws). Nyob ntawm qhov ntsuas no thiab lwm yam kev xav tau ntxiv, xws li qib kev vibration, thiab lwm yam, txhua yam khoom siv tau muab faib ua pawg: chav A, B, C.

Nyob rau hauv xaus, peb yuav muab ib tug decoding ntawm cov cim rau bearing hom:

• 0 - radial/pob;
• 1 - radial / pob kheej kheej;
• 2 - radial / rollers nrog luv cylindrical rollers;
• 3 - radial / cov menyuam nrog spherical rollers (khoom zoo);
• 4 - radial / menyuam nrog rab koob lossis cylindrical ntev rollers;
• 5 - radial / yob nrog twisted rollers;
• 6 - angular contact/pob;
• 7 - conical/roller;
• 8 - thrust-radial / pob, thrust / pob;
• 9 - Thrust Radial / Roller, Thrust / Roller.