Al'amarin yaƙe-yaƙe akan diamita na waje na abubuwan mirgina: ƙwanƙolin dawafi a cikin wurin tuntuɓar abubuwan mirgina.Gabaɗaya akwai alamomin dawafi masu kama da juna akan rollers, duba Hoto na 70 da 71, kuma abin da ya faru na "kwallon gashi" yakan kasance don bukukuwa, duba Hoto na 72. Kada a ruɗe tare da alamun gefen (duba sashe 3.3.2.6).Gefen waƙar da aka kafa ta gefen gudu yana da santsi saboda nakasar filastik, yayin da karce yana da gefuna masu kaifi.Barbashi masu tauri sukan shiga cikin aljihun keji, suna haifar da gamuwa, duba Hoto na 73. Dalili: gurɓataccen mai;barbashi masu wuyan da aka saka a cikin aljihunan keji suna aiki kamar barbashi masu ɓarna akan dabaran niƙa Magani: - yana ba da tabbacin yanayin shigarwa mai tsabta - yana inganta hatimi - tana tace mai.

Alamar zamewa sabon abu: abubuwa masu juyawa suna zamewa, musamman manyan rollers masu nauyi, kamar INA cike da abin nadi.Slip roughens raceways ko birgima abubuwa.Abu sau da yawa yana tasowa tare da alamun ja.Yawancin lokaci ba a rarraba a saman ba amma a cikin tabo, duba Figures 74 da 75. Ana samun ƙananan rami sau da yawa, duba sashe 3.3.2.1 "Gajiya saboda rashin lubrication".Dalilai: - Lokacin da nauyin ya yi ƙasa da ƙasa kuma man shafawa ba shi da kyau, abubuwan da ke motsawa suna zamewa a kan hanyoyin tsere.Wani lokaci saboda wurin ɗaukar kaya ya yi ƙanƙanta, rollers suna raguwa da sauri a cikin aljihun keji a cikin wurin da ba a yi lodi ba, sannan kuma suna haɓaka da ƙarfi yayin shiga wurin ɗaukar kaya.– Canje-canje cikin sauri cikin sauri.Matakan gyarawa: - Yi amfani da bearings tare da ƙananan ƙarfin lodi - Yi amfani da bearings, misali tare da maɓuɓɓugan ruwa - Rage wasan motsa jiki - Tabbatar da isasshen kaya ko da babu komai - Inganta lubrication

Abun da ke haifar da karce: Don rabe-raben abin nadi na silindi ko nadi mai ɗorewa, abubuwan birgima da hanyoyin tsere ba su da wani abu mai kama da axis da daidaitawa daga abubuwan nadi.Wani lokaci ana samun sawun alamomi da yawa a cikin dawafi.Ana samun wannan alamar ne kawai a cikin dawafi na kusan B/d maimakon duka kewaye, duba Hoto na 76. Dalilin: Kuskure da shafa wa juna yayin shigar da ferrule guda ɗaya da ferrule tare da abubuwa masu juyawa.Yana da haɗari musamman lokacin motsi abubuwan da ke tattare da babban taro (lokacin da aka tura kauri mai kauri tare da zoben ciki mai ɗaukar nauyi da taro na birgima cikin zoben waje da aka riga aka shigar a cikin mahalli).Magani: - Yi amfani da kayan aikin shigarwa masu dacewa - Ka guje wa daidaitawa - Idan zai yiwu, juya a hankali lokacin shigar da kayan aiki.