Kubereka

Kuberekandi mtundu wa zinthu zamakina zomwe zimalepheretsa kusuntha kwachibale kumayendedwe ofunikira ndikuchepetsa kukangana pakati pa magawo osuntha.Mapangidwe a ma bearings atha kupereka kusuntha kwaulele kwa magawo osuntha kapena kuzungulira kwaulere mozungulira mozungulira, komanso kutha kuletsa kusuntha mwa kuwongolera vekitala ya mphamvu yabwinobwino yomwe imagwira pazigawo zosuntha.Ma bere ambiri amalimbikitsa kuyenda kofunikira pochepetsa kukangana.Ma bearings amatha kugawidwa mosiyanasiyana malinga ndi njira zosiyanasiyana, monga mtundu wa ntchito, kayendetsedwe kovomerezeka kapena mayendedwe a katundu (mphamvu) yogwiritsidwa ntchito ku gawolo.
Zimbalangondo zozungulira zimathandizira magawo ozungulira monga ndodo kapena ma shaft mu makina amakina, ndikusamutsa katundu wa axial ndi ma radial kuchokera kugwero la katundu kupita kumapangidwe omwe amathandizira.Chovala chosavuta kwambiri ndi chonyamula, chomwe chimakhala ndi shaft yomwe imazungulira mu dzenje.Chepetsani kukangana ndi mafuta.M'mabwalo a mpira ndi mayendedwe odzigudubuza, kuti muchepetse kukangana kotsetsereka, chodzigudubuza kapena chigawo cha mpira chokhala ndi gawo lozungulira chimayikidwa pakati pa mpikisano kapena magazini ya msonkhano.Mapangidwe osiyanasiyana amatha kukwaniritsa zofunikira zosiyanasiyana zogwiritsira ntchito kuti apititse patsogolo ntchitoyo ndikuwongolera kudalirika komanso kulimba.
Mawu oti kubereka amachokera ku verebu loti "kubereka".Bearing ndi chinthu cha makina chomwe chimalola gawo limodzi kuthandizira (ie kuthandizira) gawo lina.Chovala chosavuta ndicho kunyamula pamwamba.Mwa kudula kapena kupanga zigawo, mawonekedwe, kukula, roughness ndi malo a pamwamba amayendetsedwa ku madigiri osiyanasiyana.Zonyamula zina ndi zida zodziyimira pawokha zomwe zimayikidwa pamakina kapena zida zamakina.Pazida zomwe zili ndi zofunikira zolimba kwambiri kuti zikhale zolondola, kupanga ma bearings olondola kumayenera kukwaniritsa miyezo yapamwamba kwambiri yaukadaulo wamakono.