Kunyatsojeka kwebearing kune kunyatsojeka uye kutenderera kwekujeka kwechiyero chakakodzera ipurojekiti inosungirirwa pamashafts, inosanganisira dhayamita yemukati, dhayamita yekunze, upamhi, kushivirira saizi yechamfer kana kukosha kunobvumidzwa. Kunyatsojeka kwejiyometri kunosanganisira kutsauka kwedhayamita, avhareji kutsauka kwedhayamita yemukati, kutsauka kwedhayamita yekunze, avhareji kutsauka kwedhayamita yeringi mundege imwe chete yeradial. Kunyatsojeka kwekutenderera kuri kutenderera kwePendulum, kusanganisira ring yemukati neradial yekunze uye axial runout, Side yering yemukati nedhiyamita yekunze pamusoro pe perpendicularity tolerance range. Bearing precision grade kubva kugiredhi general 0 kusvika 6, 5, giredhi 4 negiredhi 2, zvichiteerana, pazasi pane tafura yekufananidza pakati pepreeision class yechina GB 307 nedzimwe precision standard. Giredhi guru repreeision grade rinobva kugiredhi 6, 5, 4 ne2 mazinga emamaki mana. 

Mhete yekunze 11, mhete yemukati 12, nebhora 13 izvo zvine zvikamu zvinotakura zvinhu zvinosvika 0.95 mass% kana kupfuura uye 1.10 mass% kana pasi pekabhoni, 0.05 mass% kana kupfuura uye pasi pe0.3 mass% silicon, 0.10 mass% kana kupfuura uye 0.50 mass% 11 A yemigwagwa yekunze yemhete uye 12 A yemigwagwa yemukati yemhete inova pamusoro pesimbi ine manganese inotevera, 1.30 mass% kana kupfuura, uye 2.00 mass% kana pasi, uye ine simbi ine simbi yasara uye tsvina, uye inobatana nezvimwe zvikamu. Uye avhareji yehuwandu hwenitrogen munzvimbo dzepamusoro pevhu 11B, 12B, uye 13B dziri nzvimbo dziri mukati mehupamhi hwe20 μm kubva pamusoro pebhora 13A i0.2% nehuremu kana kupfuura uye 0.7% nehuremu kana pasi, uye munzvimbo dzepamusoro pevhu 11B, 12B, 13B, makabhoidhi mashanu kana kupfuura ane dhayamita ye0.5 micrometer kana pasi aripo pa100 micrometer.