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Akwai abubuwa 6 da za a yi la'akari da su yayin zabar bearings don kayan aikin sanyaya

 

Duk nau'ikan bearings masu birgima suna da halaye daban-daban kuma sun dace da nau'ikan amfani daban-daban na injuna daban-daban. A cikin yanayi na al'ada,bearings masu turawa da kuma bearings masu kusurwaan zaɓi su lokacin ɗaukar nauyin turawa;

 

Bearings na ƙwalloAna amfani da su ne yawanci don aikace-aikacen sauri, kuma ana amfani da bearings na birgima don manyan nauyin radial.

 

1. Sararin da matsayin injinan da ke wurinhali

 

A tsarin injiniyanci, galibi ana fara tantance girman shaft ɗin, sannan a zaɓi shaft ɗin birgima bisa ga girman shaft ɗin. Yawanci ana amfani da shaft ɗin ƙwallo ga ƙananan shaft da shaft ɗin birgima ga manyan shafts. Duk da haka, idan shaft ɗin ya takaita a cikin alkiblar diamita na injin,bearings na allura, an zaɓi bearings na ƙwallo ko na birgima na ƙarin haske da jerin haske mai ƙarfi; Lokacin da aka takaita matsayin axial na bearings a cikin injin, ana samun kunkuntar ko mafi kunkuntar jerin bearings na ƙwallo ko na birgima.

 

2. Girma, alkibla da yanayin nauyin da ke kan abin ɗagawa

 

Load shine mafi mahimmanci wajen zaɓar bearings. Ana amfani da bearings masu juyawa don jure wa nauyi mai nauyi, ana amfani da bearings masu juyawa don jure wa nauyi mai sauƙi ko matsakaici, kuma bearings da aka yi da ƙarfe mai kauri ko bainite quenched an tsara su ne don jure wa shock da girgiza.

 

Dangane da alkiblar aikin kayan, lokacin ɗaukar nauyin radial mai tsarki, ana iya zaɓar bearings na ƙwallon tsagi mai zurfi, bearings na naɗa silinda ko bearings naɗa allura. Lokacin ɗaukar ƙananan kaya na axial mai tsarki, ana iya zaɓar bearings na thrust ball; Bearings na naɗa thrust suna samuwa don manyan kaya na axial masu tsarki. Lokacin da bearing ɗin ya fuskanci nauyin radial da axial, ana amfani da bearings na ƙwallon hulɗa mai kusurwa ko bearings naɗa mai taped.

 

3.Aikin daidaita kai na ɗaukar kaya

 

Idan tsakiyar layin shaft ya bambanta da tsakiyar layin shaft ɗin, akwai kuskuren kusurwa, ko kuma saboda tazara tsakanin goyon bayan shaft guda biyu babba ne kuma taurin shaft ɗin ƙarami ne, yana da sauƙin lanƙwasa ko karkatarwa ƙarƙashin ƙarfi, ƙwallon da ke daidaita kansa ko kuma abin nadi mai daidaita kansa tare da kyakkyawan aikin daidaitawa kai tsaye da kuma abin da ke ɗaukar ƙwallon waje. Waɗannan bearings suna ci gaba da aiki na yau da kullun lokacin da shaft ɗin ya ɗan karkata ko lanƙwasa.

 

Ingancin aikin daidaita kai na ɗaukar nauyi yana da alaƙa da bambancin axiality da yake bayarwa, kuma girman ƙimar axiality daban-daban, mafi kyawun aikin daidaita kai.

 

4. Taurin ɗaurin

 

Taurin bear yana nufin adadin ƙarfin da ake buƙata don bearing don samar da na'urar canza siffa. Nauyin roba na bearings mai birgima yana da ƙanƙanta sosai, kuma ba lallai ba ne a yi la'akari da shi a yawancin injina, amma a wasu injina, kamar sandunan kayan aikin injina, taurin bearings muhimmin abu ne, kuma ya kamata a zaɓi bearings masu silinda da masu tauri gabaɗaya. Saboda waɗannan nau'ikan bearings guda biyu suna da alaƙa da hanyar tsere lokacin da suke cikin kaya, taurin ba shi da kyau.

 

Bugu da ƙari, ana iya ɗora dukkan nau'ikan bearings kafin a fara amfani da su don cimma manufar ƙara taurin tallafin. Misali,bearings na ƙwallon lamba na kusurwada kuma bearings masu kauri, domin hana girgizar shaft da kuma ƙara taurin goyon bayan, sau da yawa ana amfani da wani ƙarfin axial a gaba yayin shigarwa don sa su matse juna. Yana da mahimmanci a lura a nan cewa adadin kayan da aka riga aka ɗora bai kamata ya yi girma ba. Idan ya yi girma sosai, gogayya ta bearing ɗin zai ƙaru, ƙaruwar zafin jiki zai ƙaru, kuma rayuwar bearing ɗin za ta shafi.

 

5. Saurin juyawa na bearing

 

Kowace samfurin bearing tana da nata gudun iyaka, wanda aka ƙayyade ta hanyar halaye na zahiri kamar girma, nau'i da tsari, saurin iyaka yana nufin matsakaicin saurin aiki na bearing (yawanci r/min), wuce wannan iyaka zai sa zafin bearing ya tashi, man shafawa ya bushe, har ma ya sa bearing ya makale. Matsakaicin saurin da ake buƙata don aikace-aikacen yana taimakawa wajen tantance nau'in bearing da za a yi amfani da shi. Yawancin masana'antun bearing suna ba da ƙimar mafi girman saurin samfuran su a cikin kundin samfuran su, kuma aikin ya tabbatar da cewa ya fi kyau a yi aiki a cikin yanayin da bai kai kashi 90% na saurin iyaka ba.

 

Gabaɗaya, a lokacin aiki mai sauri, yana da kyau a zaɓi bearings na ƙwallon tsagi mai zurfi, bearings na hulɗa na kusurwa, da bearings na jujjuyawar silinda; A ƙananan gudu, bearings na jujjuyawar zaɓi ne. Matsakaicin saurin bearings na jujjuyawar silinda shine kusan kashi 65% na bearings na ƙwallon tsagi mai zurfi, kashi 70% na bearings na jujjuyawar silinda, da kashi 60% na bearings na ƙwallon tsagi mai kusurwa. Bearings na ƙwallon tsagi suna da ƙarancin gudu kuma ana iya amfani da su ne kawai a ƙananan gudu.

 

6. Yana da sauƙi don shigarwa da kuma wargaza bearings

 

Lokacin zabar nau'in bearing, yana da mahimmanci a yi la'akari da ko bearing ɗin ya dace a saka shi da kuma wargaza shi, musamman don shigarwa da kuma wargaza manyan bearings da manyan bearings. Bearings ɗin ƙwallon hulɗa na kusurwa na gaba ɗaya, bearings ɗin naɗa mai tapered, bearings ɗin naɗa mai silinda da bearings ɗin allura tare da zoben waje da za a iya raba su suna da sauƙin shigarwa da wargaza su, kuma ana iya shigar da zoben ciki da na waje a kan shaft ko a cikin housing bore bi da bi. Bugu da ƙari, bearings ɗin naɗa mai siffar ƙwallo tare da hannun riga mai tapered bore da adaftar, bearings ɗin naɗa mai layi biyu da bearings ɗin ƙwallon ƙwallo mai siffar ƙwallo sun fi sauƙin shigarwa da wargaza su.