Thrust bearings yog categorized rau hauv peb hom tseem ceeb raws li lawv ua raws li axial loads:
zawv zawg (cov ntawv xov xwm-style) thrust bearings-tseem hu ua thrust washers lossis thrust rings-txhawb nqa ntawm qhov tseeb-hauv av, tiaj tus zawv zawg. Qhov saum npoo no feem ntau tau txais kev txhawb nqa los ntawm cov yeeb yaj kiab ntawm cov roj lubricating thiab feem ntau nta cov grooves los faib cov roj nplua nyeem. Lawv yog cov compact, cuam tshuam-resistant, thiab zoo haum rau hnyav loads ntawm kuj tsawg speeds.
Pob thrust bearings muaj ib lub nplhaib ntawm cov khoom nyob nruab nrab ntawm ob grooved thrust washers. Lawv muaj peev xwm lis nruab nrab axial loads ntawm high speeds nrog tsawg kev sib txhuam; Txawm li cas los xij, lawv yuav luag tsis muaj peev xwm rau radial loads thiab yog cov rhiab heev rau misalignment.
Cov menyuam thrust bearings-uas suav nrog cylindrical, tapered, lossis spherical roller variants-hloov cov pob nrog cov menyuam, ua rau thaj chaw sib cuag los txhim kho lub peev xwm thauj khoom. Tapered roller thrust bearings, piv txwv li, tuaj yeem ua tau raws li qhov tseem ceeb ua ke radial thiab axial loads nyob rau hauv high-muaj peev xwm kis tau tus mob.
Puas yog thrust bearings axial lossis radial?
Raws li lub npe implies,zog bearingsyog axial. Lawv tau tsim los txhawb nqa axial loads-forces ua yeeb yam mus rau qhov sib npaug ntawm cov ncej ntawm qhov nruab nrab-tsis yog radial loads, uas ua rau perpendicular mus rau ncej. Qhov no yog qhov sib txawv tseem ceeb hauv kev xaiv cov kabmob: radial bearings txhawb transverse loads thiab qhov hnyav ntawm tus ncej nws tus kheej, whereas axial thrust bearings counteract lub thrust uas yuav txwv tsis pub lub ncej hloov raws nws longitudinal axis.
Hauv cov ntawv thov kev lag luam, qhov sib txawv ntawm axial thiab radial kev txhawb nqa yog qhov tseem ceeb. Axial thrust bearings yog tsim tshwj xeeb los daws qhov tshwj xeeb xav tau ntawm axial loading, kom ntseeg tau tias cov khoom sib hloov muaj qhov tseeb axial positioning thiab tiv thaiv kom tsis txhob txav chaw nyob rau hauv kev ua haujlwm nyuaj. Qhov kev tsim tshwj xeeb no yog qhov tseem ceeb nyob rau hauv qhov chaw muaj kev ntseeg siab, qhov kev tswj xyuas tsis zoo tuaj yeem ua rau kev hnav ntxov ntxov lossis kev puas tsuaj loj. Los ntawm kev xaiv cov kabmob uas tsim nyog rau txhua qhov kev taw qhia, cov neeg tsim qauv tuaj yeem ua kom pom kev ua haujlwm zoo thiab ua haujlwm ntev rau tag nrho lub cev.
Cov kev taw qhia ntawm lub load txiav txim qhov kev sib cuag geometry, uas nyob rau hauv lem dictates qhov twg cov khoom yuav tsum muaj lub zog loj tshaj, raws li zoo raws li yuav ua li cas lub lubricant yog xa thiab khaws cia. Tus qauv thrust washer nta ib lub tiaj, annular contact nto perpendicular mus rau ncej, tso cai rau axial quab yuam kom faib thoob plaws lub nplhaib; Lub tes tsho radial bearing, los ntawm qhov sib txawv, muaj ib lub cylindrical bore, uas faib cov loads nyob ib ncig ntawm nws ncig. Yog hais tias ob hom yog raug rau ib tug load uas nws tsis tau tsim, qhov chaw sib cuag zoo shrinks thiab siab nce, thaum kawg ua rau nto tsis ua hauj lwm.
Hauv kev siv tshuab, ob hom kev thauj khoom no tsis tshua muaj kev sib cais; Yog li ntawd, feem ntau cov kev lag luam kev siv cov kabmob sib xyaw ua ke cov kabmob muaj zog nrog kev txhawb nqa radial. Tus kws ua haujlwm txoj haujlwm yog los xyuas kom meej tias txhua qhov kev thauj khoom yog los ntawm cov khoom tsim los rau nws-axial thrust yog coj mus rau qhov thrust nto, thaum radial loads raug coj mus rau phau ntawv xov xwm-yog li tiv thaiv txhua qhov chaw los ntawm kev nqa lub nra uas nws tsis tau npaj. Thaum lub thrust bearing raug yuam kom ua siab ntev radial loads (los yog vice versa), qhov no misalignment nyob rau hauv load faib yog feem ntau lub hauv paus ua rau ntxov ntxov hnav.