Cov Qauv Xaiv Cov Bearings Rau OEM Supply

Kev Taw Qhia

Kev xaiv cov bearings rau OEM automotive programs muaj ntau tshaj li qhov sib phim cov ntsuas load rau ib daim ntawv teev npe. Cov engineers thiab cov pab pawg nrhiav khoom yuav tsum ntsuas lub voj voog ua haujlwm, qhov ceev, kev sib txhuam, kev kaw, kev ua tau zoo ntawm cov khoom siv, kev kam rau siab ntawm kev tsim khoom, thiab qhov zoo ntawm cov neeg xa khoom piv rau cov nqi nruj thiab cov hom phiaj lav. Qhov kev txiav txim siab zoo cuam tshuam rau kev ua haujlwm ntawm lub tshuab tsav tsheb, suab nrov thiab kev co, lub neej ua haujlwm, thiab kev pheej hmoo ntawm kev ua tsis tiav ntawm thaj chaw kim heev thoob plaws ntau qhov ntau lawm. Tsab xov xwm no piav qhia txog cov qauv xaiv tseem ceeb rau cov bearings tsheb hauv OEM khoom, piav qhia txog cov qauv ntawd cuam tshuam li cas rau kev ntseeg tau thiab tag nrho cov nqi, thiab muab cov qauv siv tau rau kev ntsuam xyuas cov kev xaiv bearings thoob plaws cov platform tsheb ib txwm muaj thiab hluav taws xob.

Yuav Ua Li Cas Automotive Bearings Cuam Tshuam OEM Tus Nqi Thiab Kev Ntseeg Siab

Kev xaiv ntawmcov kabmob tshebyog ib qho kev tsim kho thiab kev yuav khoom tseem ceeb uas ncaj qha txiav txim siab lub neej ua haujlwm, lub luag haujlwm lav, thiab cov nqi sib dhos rau cov chaw tsim khoom siv thawj (OEMs). Txawm hais tias cov kabmob sawv cev rau ib feem me me ntawm tag nrho cov nqi ntawm lub tsheb, lawv qhov kev ua tau zoo txhais tau tias kev ua haujlwm ntawm lub zog, lub chassis dynamics, thiab cov txheej txheem pabcuam. Rau OEM cov khoom xa tuaj thiab cov pab pawg engineering, kev ua kom zoo dua kev xaiv cov kabmob yuav tsum tau nrhiav kev sib pauv ntawm cov nqi ib chav, kev ntseeg siab mus sij hawm ntev, thiab cov qauv tsheb uas hloov pauv.

Vim li cas Bearings thiaj tseem ceeb hauv OEM Supply

Hauv kev tsim khoom tsheb ntau, qhov cuam tshuam nyiaj txiag ntawm kev ntseeg tau ntawm cov kabmob tsis sib xws. Cov kabmob tsis zoo nrog tus nqi ib chav ntawm $ 5 txog $ 15 tuaj yeem ua rau muaj kev puas tsuaj loj heev, feem ntau nce mus rau qhov kev thov lav ntau dua $ 800 rau ib lub tsheb thaum suav nrog cov neeg ua haujlwm muag khoom, cov khoom hloov pauv, thiab cov nqi tswj hwm. Yog li ntawd, OEMs xav tau kev ruaj khov tshwj xeeb kom txo tau qhov kev pheej hmoo ntawm kev rov qab los ntau.

Tsis tas li ntawd xwb, cov bearings yog qhov tseem ceeb rau kev txo cov kev puas tsuaj ntawm cov khoom siv kho tshuab. Los ntawm kev txo qis kev tiv thaiv dov,cov bearings ua haujlwm siabpab ncaj qha rau kev ua tiav cov qauv kev siv roj av nruab nrab ntawm cov tuam txhab (CAFE) thiab ua kom lub roj teeb hluav taws xob (EV) siab tshaj plaws. Kev txo qis ntawm kev sib txhuam torque los ntawm 10% thoob plaws lub tsheb lub drivetrain tuaj yeem ua rau muaj kev txhim kho zoo hauv kev siv hluav taws xob tag nrho, ua rau kev xaiv cov kabmob yog ib feem tseem ceeb ntawm kev sib raug zoo ntawm lub tsheb.

Yuav Ua Li Cas Cov Qauv Ua Haujlwm ntawm Lub Tsheb Hloov Cov Kev Xav Tau ntawm Bearing

Qhov kev hloov pauv tas mus li ntawm cov cav sib xyaw sab hauv (ICE) mus rau lub zog hluav taws xob tau hloov pauv cov qauv ua haujlwm ntawm cov kabmob. Cov kabmob ICE ib txwm ua haujlwm nyob rau hauv kev co siab, kub siab, thiab qhov ceev nruab nrab. Qhov sib piv, EV traction motors raug cov kabmob rau qhov ceev tig heev, nrog rau cov qauv niaj hnub no xav tau kev ua haujlwm ceev tshaj 20,000 RPM. Qhov kev hloov pauv no xav tau cov qauv sab hauv siab heev thiab cov qauv tshwj xeeb kom tiv taus cov zog centrifugal loj heev.

Tsis tas li ntawd xwb, cov tsheb EV muaj teeb meem tshwj xeeb txog hluav taws xob thiab suab. Cov bearings hauv cov cav hluav taws xob yooj yim raug hluav taws xob pitting los ntawm cov hluav taws xob siab uas tawm los ntawm cov khoom dov, xav tau cov kev daws teeb meem xws li cov pob ceramic lossis cov txheej txheem rwb thaiv tsev tshwj xeeb. Tib lub sijhawm, qhov tsis muaj qhov cuam tshuam ntawm lub suab nrov ntawm lub cav hauv EVs txhais tau tias lub suab nrov, kev co, thiab kev ua phem (NVH) uas tshwm sim los ntawm cov kabmob yuav tsum tau tswj hwm nruj me ntsis, feem ntau xav tau cov pa phem kom nyob qis dua 40 dB thaum ua haujlwm hnyav.

Cov Txheej Txheem Kev Ntsuas rau Kev Ntsuam Xyuas Cov Bearings Tsheb

Kev soj ntsuam cov kabmob tsheb yuav tsum tau muaj kev tshuaj xyuas zoo txog cov yam ntxwv ntawm lub cev, thermal, thiab tribological. Cov pab pawg engineering yuav tsum phim cov yam ntxwv ntawm lub cev ntawm cov kabmob kom haum rau qhov xav tau ntawm daim ntawv thov, kom ntseeg tau tias cov khoom ua haujlwm hauv nws qhov kev ua tau zoo tshaj plaws thoob plaws lub tsheb lub neej xav tau.

Kev Thauj Khoom, Kev Ceev, NVH, Kev Sib Txhuam, thiab Kev Xav Tau Thermal

Cov kev cai tseem ceeb uas tswj kev xaiv cov kabmob yog lub peev xwm thauj khoom dynamic thiab kev txwv kev sib hloov ceev. Rau cov ntawv thov ceev ceev xws li EV motors, cov engineers siv tus nqi dN (qhov loj ntawm lub qhov hauv millimeters ntau ntxiv los ntawm qhov siab tshaj plaws RPM) los ntsuas qhov kev ua tau zoo. Cov kabmob traction niaj hnub no yuav tsum txhawb nqa cov nqi dN ntau dua 1.5 lab. Ntawm cov qhov siab no, kev tswj hwm kev sib txhuam thiab cov zis thermal ua rau tseem ceeb heev rau kev tiv thaiv kev puas tsuaj ntawm cov roj ua ntej thiab kev puas tsuaj loj heev.

Cov kev cai ntawm NVH qhia txog qhov me me ntawm cov kabmob sab hauv. Kev ua tiav zoo ntawm txoj kev sib tw, kev ua raws li ABEC 5 (lossis siab dua) cov chav kawm raug, thiab kev ua kom zoo dua sab hauv (xws li C3 lossis C4 kom haum rau kev nthuav dav thermal) yog qhov yuav tsum tau ua kom txo qis kev co. Cov kev cai thermal ntxiv qhia tias cov kabmob tswj tau qhov ruaj khov ntawm ntau qhov kev ua haujlwm, feem ntau yog txij li -40 ° C thaum pib huab cua txias mus txog qhov siab tshaj plaws ntawm 150 ° C hauv cov chaw sib kis hnyav.

Cov Khoom Siv, Cov Ntiv Tes, thiab Cov Tshuab Lubrication

Kev xaiv cov khoom siv yog lub hauv paus ntawm kev ua haujlwm ntev. Tus qauv kev lag luam tseem yog cov hlau chromium bearing steel (100Cr6), feem ntau raug kev kho cua sov siab heev xws li carbonitriding los txhim kho qhov tawv ntawm qhov chaw thiab kev tiv taus qaug zog. Rau cov chaw ib puag ncig uas muaj kev puas tsuaj hluav taws xob lossis kev kub ceev heev, cov bearings hybrid siv silicon nitride (Si3N4) ceramic rolling elements muab kev rwb thaiv hluav taws xob zoo dua thiab txo 40% ntawm cov centrifugal mass piv rau cov pob hlau.

Cov txheej txheem kaw thiab lubrication kuj tseem ceeb heev, vim tias qhov tsis ua haujlwm ntawm lubrication yog qhov ua rau feem ntau ntawm cov kabmob tsis ua haujlwm ua ntej lub sijhawm. Cov kabmob tsheb feem ntau siv cov foob labyrinth uas tsis sib txhuam lossis cov foob sib cuag ua los ntawm polyacrylic roj hmab (ACM) lossis fluoroelastomers (FKM) los tiv thaiv cov pa phem nkag mus thaum txo qhov rub. Cov ntim roj sau raug tswj hwm nruj me ntsis - feem ntau teev tseg ntawm 25% thiab 35% ntawm qhov chaw dawb sab hauv ntawm cov kabmob - kom sib npaug cov roj nplua nyeem txaus nrog kev tiv thaiv kev khiav tawm ntawm thermal los ntawm cov roj churning ntawm kev kub ceev.

Kev Sib Piv ntawm Pob, Cov Menyuam, thiab Cov Pob Bearing

Qhov kev xaiv ntawm cov kabmob topology nyob ntawm seb cov vectors thauj khoom tshwj xeeb thiab qhov chaw txwv ntawm lub tsheb sub-system.cov kabmob pob, cylindrical roller bearings, thiab tapered roller bearings txhua tus muaj cov txiaj ntsig zoo sib txawv.

Cov kws ua haujlwm OEM siv cov qauv sib piv no los ua kom qhov chaw thiab kev ua tau zoo dua. Piv txwv li, cov khoom sib dhos ntawm lub log feem ntau vam khom cov kabmob ob kab vim lawv muaj peev xwm los daws cov kev sib xyaw ua ke ntawm cov radial thiab axial uas tsim thaum lub sijhawm tig tsheb, txawm tias lawv muaj kev sib txhuam ntau dua piv rau cov kabmob pob txheem.

Cov Pab Pawg OEM Yuav Tsum Soj Ntsuam Cov Neeg Muab Khoom Bearing Li Cas

Kev txheeb xyuas cov lus qhia tshwj xeeb ntawm cov kabmob yog ib nrab ntawm qhov kev sib tw; OEMs kuj yuav tsum soj ntsuam xyuas cov peev xwm tsim khoom thiab kev ua haujlwm ntawm cov neeg muag khoom. Kev ncaj ncees ntawm cov khoom siv tsheb thauj khoom vam khom cov neeg muag khoom uas tuaj yeem xa cov khoom sib xyaw ua ke ntawm qhov loj me, yam tsis muaj kev hloov pauv ntawm kev pom zoo.

Cov Txheej Txheem Zoo, Kev Tswj Xyuas Txheej Txheem, thiab Kev Pom Zoo

Cov OEM tsheb xav tautus neeg muab khoom siv kabmobs kom tswj tau nrujcov txheej txheem tswj xyuas zoo, raug yuam kom ua thoob ntiaj teb los ntawm daim ntawv pov thawj IATF 16949. Txawm li cas los xij, daim ntawv pov thawj ib leeg tsis txaus. Cov pab pawg yuav khoom thiab cov pab pawg zoo yuav tsum tshuaj xyuas cov ntaub ntawv tswj kev suav lej (SPC) ntawm tus neeg muab khoom kom ntseeg tau tias muaj kev ruaj khov ntawm kev tsim khoom. Tus neeg muab khoom siv lub log tsheb uas muaj peev xwm yuav tsum ua qauv qhia txog Kev Muaj Peev Xwm Txheej Txheem (Cpk) ntau dua 1.67 rau qhov tseem ceeb rau qhov zoo, xws li txoj kab uas hla ntawm txoj kab sib tw thiab qhov ntxhib ntawm qhov chaw.

Cov txheej txheem lees paub yuav tsum sib haum nrog OEM cov voj voog tsim khoom. Cov neeg muag khoom yuav tsum ua qhov kev sim hauv tsev kom zoo, suav nrog kev sim lub neej sai dua, kev sim cov av nkos rau cov ntsaws ruaj ruaj, thiab kev ntsuam xyuas chav suab. Lub peev xwm ntawm tus neeg muag khoom los muab cov ntawv qhia txog kev lees paub uas muaj cov ntaub ntawv pov thawj ua rau OEM txo qhov kev sim sab hauv ntawm lub nra hnyav thiab ua kom lub sijhawm mus rau kev lag luam rau cov platform tsheb tshiab sai dua.

Ua-los-Yuav, Kev Hloov Chaw, Peev Xwm, thiab Tag Nrho Tus Nqi

Qhov kev txiav txim siab zoo ntawm seb puas yuav cia siab rau cov khoom lag luam hauv daim ntawv teev khoom lossis kom ua cov kev daws teeb meem tshwj xeeb (ua-lossis-yuav) nyob ntawm qhov ntim thiab kev siv tshwj xeeb. Cov khoom lag luam tshwj xeeb xav tau kev nqis peev ntau rau cov cuab yeej ua ntej thiab feem ntau xav tau Yam Tsawg Kawg Nkaus (MOQs) txij li 10,000 txog 50,000 units ib zaug ntau lawm. Cov OEMs yuav tsum ntsuas cov nqi pib no piv rau cov txiaj ntsig kev ua tau zoo mus sij hawm ntev thiab kev ua haujlwm zoo ntawm kev sib dhos.

Kev ua kom yooj yim rau thaj chaw thiab muaj peev xwm yog cov hauv paus tseem ceeb ntawm kev ntsuam xyuas cov neeg muab khoom. Cov OEMs nyiam cov neeg muab khoom uas muaj cov chaw tsim khoom hauv cheeb tsam kom txo tau cov kev pheej hmoo ntawm kev nom kev tswv, txo lub sijhawm thauj mus los, thiab txo cov pa roj carbon. Kev ntsuam xyuas tus nqi tag nrho ntawm kev muaj (TCO) ntawm tus neeg muab khoom txuas ntxiv mus dhau tus nqi khoom; nws suav nrog kev xa khoom, cov nqi khaws cov khoom muag, cov nuj nqis se, thiab tus neeg muab khoom lub peev xwm nce ntxiv kom haum rau kev hloov pauv sai sai hauv cov sijhawm tsim khoom tsheb.

Kev Ua Raws Cai, Kev Ntsuas, thiab Cov Yam Ntxim Saib ntawm Cov Khoom Siv

Kev koom ua ke ntawm cov kabmob rau hauv kab tsim khoom tsheb suav nrog kev taug kev hauv lub vev xaib nyuaj ntawm cov qauv kev lag luam, kev ua raws li txoj cai, thiab kev txwv kev thauj mus los. OEMs yuav tsum xyuas kom meej tias txhua pawg ntawm cov kabmob tsis yog tsuas yog ua tau raws li cov lus qhia engineering xwb tab sis kuj xa tuaj rau hauv qhov xwm txheej npaj txhij rau kev sib dhos tam sim ntawd, tsis muaj qhov tsis zoo.

Cov Qauv, PPAP, Kev Taug Qab, thiab Kev Pov Hwm

Kev ua raws li txoj cai hauv kev muab cov kabmob tsheb yog tswj hwm nruj me ntsis los ntawm Cov Txheej Txheem Pom Zoo Rau Qhov Chaw Tsim Khoom (PPAP). Cov neeg muab khoom yuav tsum xa cov ntaub ntawv Qib 3 PPAP, xyuas kom meej tias cov txheej txheem tsim khoom ruaj khov thiab muaj peev xwm tsim cov khoom raws li ISO 281 cov qauv rau kev ntsuas dynamic load. Cov ntaub ntawv no suav nrog cov ntaub ntawv tsim qauv, hom kev ua tsis tiav thiab kev tshuaj xyuas cov teebmeem (DFMEA/PFMEA), thiab cov phiaj xwm tswj hwm.

Kev taug qab tsis yog qhov sib tham tau rau kev tswj hwm kev lees paub thiab kev rov qab los. Cov chaw tsim khoom Tier 1 thiab OEM xav tau cov bearings kom muaj cov cim qhia txog tus kheej tas mus li - xws li laser-etched QR codes lossis alphanumeric lot numbers - txuas txhua chav tsev rau cov cua sov hlau tshwj xeeb, kev hloov pauv ntau lawm, thiab cov ntaub ntawv tshuaj xyuas qhov ntev. Qib kev taug qab no yog qhov tseem ceeb rau kev txhawb nqa lub sijhawm lav tsheb niaj hnub, uas feem ntau txuas mus txog 10 xyoo lossis 150,000 mais.

Kev Thauj Khoom, Kev Ntim Khoom, Lub Sij Hawm Khaws Cia, thiab Kev Tsim Khoom Hauv Cheeb Tsam

Kev xa khoom ntawm cov bearings yuav tsum muaj kev thauj khoom tshwj xeeb kom tiv thaiv kev puas tsuaj ua ntej sib dhos. Cov bearings yooj yim raug kev puas tsuaj me me thaum lub sijhawm thauj mus los thiab oxidation yog tias raug rau cov dej noo ib puag ncig. Yog li ntawd, cov neeg xa khoom yuav tsum siv cov ntim khoom Volatile Corrosion Inhibitor (VCI), cov hnab ntim khoom uas kaw los ntawm lub tshuab nqus tsev, lossis cov yas tshwj xeeb uas cais cov khoom ib leeg kom nqus tau cov kev co ntawm kev thauj mus los.

Kev tswj lub sijhawm khaws cia yog ib qho tseem ceeb heev rau cov khoom siv. Cov roj nplua nyeem hauv cov kabmob yuav raug tshuaj lom neeg puas tsuaj thiab sib cais roj dhau sijhawm, txawm tias nyob rau hauv qhov chaw khaws cia zoo tshaj plaws. Cov OEM feem ntau yuam kom muaj lub sijhawm khaws cia ntev tshaj plaws ntawm 3 txog 5 xyoos rau cov kabmob kaw. Txhawm rau tswj qhov no, cov pab pawg khoom siv yuav tsum sib koom tes nrog cov chaw tsim khoom hauv cheeb tsam kom ntseeg tau tias xa khoom raws sijhawm (JIT), ua raws li lub sijhawm tsim khoom ib txwm muaj ntawm 16 txog 24 lub lis piam yam tsis muaj kev pheej hmoo ntawm cov khoom tsis siv lawm.

Kev Txiav Txim Siab rau Kev Xaiv Cov Bearings Tsheb

Kev sib sau ua ke cov kev hloov pauv ntawm kev siv tshuab, kev lag luam, thiab kev thauj mus los ua ke rau hauv kev txiav txim siab sib koom ua ke yuav tsum muaj lub moj khaum uas muaj qauv. Cov OEMs ua tiav cov txiaj ntsig zoo tshaj plaws los ntawm kev siv txoj hauv kev hla kev ua haujlwm uas tiv thaiv kev txiav txim siab ib leeg, kom ntseeg tau tias cov kev pib txo nqi tsis ua rau muaj kev nyab xeeb lossis kev ua tau zoo ntawm lub tsheb.

Cov Kauj Ruam Xaiv Cov Haujlwm Sib Txawv

Ib txoj kev xaiv uas muaj zog ua haujlwm los ntawm txoj kev txheej txheem theem-qhov rooj. Thaum pib tsim qauv, cov pab pawg engineering txhais cov xwm txheej ciam teb tag nrho - qhov siab tshaj plaws, qhov kev txwv ntawm qhov chaw, thiab lub neej ntev. Cov pab pawg yuav khoom tom qab ntawd muab cov kev cai no sib piv rau daim ntawv teev cov neeg muag khoom tau pom zoo (AVL) los txheeb xyuas cov neeg sib tw uas muaj peev xwm ua tau raws li cov lus qhia hauv qhov nqi ntawm lub hom phiaj.

Thaum lub sijhawm tsim qauv thiab kev lees paub, cov pab pawg ua haujlwm zoo (QA) tau koom ua ke los tshuaj xyuas qhov kev npaj PPAP ntawm tus neeg muag khoom thiab cov peev xwm tsim khoom hauv zos. Los ntawm kev yuam Engineering, Purchasing, thiab Quality kom kos npe rau ntawm txhua lub rooj vag, OEM ua kom ntseeg tau tias cov kabmob xaiv tau muaj txiaj ntsig zoo, kev lag luam ruaj khov, thiab tsim tau ntawm cov ntim siab nrog qhov sib txawv tsawg kawg nkaus.

Kev Sib Npaug ntawm Kev Ua Tau Zoo, Kev Ua Raws Cai, Kev Pheej Hmoo, thiab Tus Nqi

Thaum kawg, kev xaiv cov kabmob yog ib qho kev tawm dag zog hauv kev ua kom zoo dua ntawm ntau yam. Cov kabmob zoo tshaj plaws yuav muab 10% txog 15% kev txo qhov hnyav thiab cov yam ntxwv NVH zoo dua, tab sis nws kuj tseem yuav nqa 30% tus nqi them ntxiv thiab xav tau lub sijhawm ua haujlwm ntev. Cov pab pawg yuav tsum siv cov txheej txheem txiav txim siab hnyav los ntsuas cov kev pauv no kom meej.

Los ntawm kev siv cov qauv ntsuas no, cov pab pawg OEM tuaj yeem sib npaug qhov kev thov rau kev ua tau zoo tshaj plaws tawm tsam qhov tseeb ntawm kev ua raws li txoj cai, kev sib txuas ntawm cov khoom xa tuaj, thiab tag nrho cov nqi tsaws. Txoj hauv kev nruj no ua kom ntseeg tau tias qhov kev xaiv kawg ntawm cov kabmob txhawb nqa cov hom phiaj tseem ceeb ntawm lub platform tsheb.

Cov Ntsiab Lus Tseem Ceeb

• Cov lus xaus tseem ceeb tshaj plaws thiab cov laj thawj rau Automotive Bearings
• Cov lus qhia tshwj xeeb, kev ua raws li txoj cai, thiab kev kuaj xyuas kev pheej hmoo uas tsim nyog lees paub ua ntej koj cog lus
• Cov kauj ruam tom ntej thiab cov lus ceeb toom uas cov nyeem ntawv tuaj yeem siv tau tam sim ntawd

Cov Lus Nug Feem Ntau

Cov qauv tseem ceeb tshaj plaws thaum xaiv cov bearings tsheb rau OEM khoom yog dab tsi?

Sib phim qhov hnyav, qhov ceev, qhov kub, NVH, kev kaw, thiab kev siv roj kom raug. Rau cov kev pab cuam OEM, kuj xyuas kom meej qhov ntev, lub neej ua haujlwm, thiab qhov zoo sib xws.

Cov ntawv thov EV hloov pauv cov kev xav tau ntawm lub tsheb li cas?

Cov kabmob EV feem ntau xav tau lub peev xwm ceev dua, suab qis dua, thiab kev tiv thaiv kev puas tsuaj los ntawm cov hluav taws xob tsis sib xws. Cov qauv tsim ua los ntawm cov khoom siv ceramic lossis cov qauv rwb thaiv tsev feem ntau siv rau cov cav traction.

Cov ntaub ntawv bearing twg feem ntau zoo tshaj plaws rau kev siv tsheb OEM?

100Cr6 bearing steel yog tus qauv rau ntau yam kev siv hauv tsheb. Rau kev xav tau kev kub ceev lossis kev rwb thaiv hluav taws xob, silicon nitride ceramic rolling elements tuaj yeem txhim kho kev ruaj khov thiab txo cov hluav taws xob pitting.

Cov neeg yuav khoom OEM yuav txo qhov kev pheej hmoo ntawm kev lav thaum nrhiav cov bearings li cas?

Xaiv cov neeg muag khoom uas muaj cov txheej txheem zoo ntawm tsheb xws li ISO/TS16949, kev tswj cov txheej txheem ruaj khov, thiab muaj peev xwm kuaj xyuas tag nrho. Thov cov ntaub ntawv pov thawj rau lub neej, suab nrov, kev tshem tawm, thiab kev ua haujlwm ntawm lub foob.

Puas yog DEMY Bearings txhawb nqa kev xaiv cov kabmob tsheb rau OEM cov haujlwm?

Yog. DEMY Bearings muaj ntau yam kev pabcuam rau tsheb thiab kev txhawb nqa raws li catalog, pab OEM thiab cov neeg yuav khoom lag luam sib piv cov hom, cov lus qhia, thiab cov kev xaiv haum rau daim ntawv thov kom zoo.