Kodi chiŵerengero cha katundu wosasinthasintha ndi chiŵerengero cha katundu wosinthasintha cha bearing ndi chiyani?

 

Pamene tikufunsa zachogwiriraMwachitsanzo, nthawi zambiri timawona njira ziwiri, Cr ndi Cor, Cr amatanthauza katundu wosinthika wa kuberekera, Cor amatanthauza katundu wosasunthika wa kuberekera. Ndiye kodi mlingo wosasunthika wa kuberekera ndi mlingo wosinthika wa katundu wosinthika wa kuberekera ndi chiyani? Kodi ubale ndi kusiyana kotani pakati pa ziwirizi?

Magawo atatu oyambira omwe nthawi zambiri amagwiritsidwa ntchito popanga ma rolling bearing ndi awa: basic rated dynamic load Cr (radial) kapena Ca (axial) yomwe imakwaniritsa zofunikira za moyo wina wotopa; basic rated static strength Cor (radial) kapena Coa (axial) yomwe imakwaniritsa zofunikira zina za static strength ndi liwiro lomaliza No, lomwe limalamulira kuvala kwa bearing.

 

Kodi ndi chiyanichogwiriramlingo wa katundu wosasinthasintha?

 

Kuyeza kwa static load kwa ma rolling bearings (radial Cor, axial Coa) kumatanthauza static load kapena central axial static load yofanana ndi high load ya bearing pamene contact stress inayake imayambitsidwa ndi contact stress inayake pakati pa contact element ndi raceway.

 

Pa ma radial bearing, rated static load imatanthauza radial load, pa radial thrust bearing (angular contact ball bearing) imatanthauza radial component ya katundu yomwe imanyamula raceway mu half ring ya bearing, ndipo pa thrust bearing, imatanthauza central axial load.

 

Izi zikutanthauza kuti, radial basic static load rating ndi axial basic static load rating ya bearing imatanthauza katundu wapamwamba kwambiri womwe bearing ingapirire ikakhala yokhazikika kapena yozungulira.

 

Mphamvu yonyamulira katundu ya mabearing a mpira wozama kwambiri pa kuyima kapena kuzungulira pang'onopang'ono (liwiro n≤10r/min) imayesedwa ngati static load.

 

Kodi ndi chiyanichogwiriraKuyesa kwamphamvu kwa katundu?

 

Kuyeza kwa mphamvu ya bearing dynamic load kumatanthauza: bearing yozungulira imatha kunyamula katundu wokhazikika wa radial (nthawi zonse axial load), pansi pa ntchito ya moyo woyambira wa 100W rpm, mphamvu yoyambira ya bearing imawonetsa kuthekera kwa bearing kukana kutopa kozungulira. Kuyeza kwa mphamvu yoyambira ya ma radial bearing ndi ma thrust bearing kumadziwikanso kuti radial basic dynamic load rating ndi axial basic dynamic load, zomwe zimafotokozedwa ndi Cr ndi Ca.

 

Mphamvu yonyamula katundu ya ma bearing a mpira wa groove panthawi yozungulira (liwiro n>10r/mim) ndiye katundu woyambira woyendetsedwa ndi mphamvu.

 

Nchifukwa chiyani katundu wovotera wa bearing ndi waukulu kuposa katundu wovotera wa static?

 

Katundu wosinthika woyesedwa umatanthauza katundu womwe uli pa bearing pamene moyo woyesedwa ndi 1 miliyoni rpm. Katundu wosasunthika woyesedwa umatanthauza kukhudzana pakati pa chinthu chozungulira ndi msewu wa mphete womwe ndi wodzaza kwambiri pamene bearing ili pamalo opumulira, ndipo chiwerengero cha kusintha kosatha kwa chinthu chozungulira ndi msewu wa mphete ndi 1/10,000 ya m'mimba mwake wa chinthu chozungulira.

 

Pali ubale wina pakati pa nthawi ya ntchito ya bearing ndi katundu wovotera wa bearing, ndiye ndi pazochitika ziti pamene timasankha bearing ndi katundu wovotera wa bearing? Mfundo zazikulu ndi izi:

 

Zindikirani: Nthawi zina, kukula kwa bearing kuyenera kusankhidwa ndi static load rating (yomwe imatanthauzidwa kuti Co kuti imveke mosavuta) m'malo mwa nthawi ya bearing.

 

1. Pogwiritsa ntchito mphamvu yopitirira kapena yosasinthasintha, chotengeracho chimakhala chosasuntha.

 

2. Pansi pa katundu, chogwiriracho chimangopanga kugwedezeka pang'onopang'ono kapena kuyenda kosinthika.

 

3. Pansi pa katundu, liwiro la bearing ndi lotsika kwambiri (zosakwana 10 revolutions pa mphindi imodzi) ndipo limangofunika moyo waufupi. Makamaka, pankhaniyi, pa katundu wofanana ndi P, mlingo wofunikira wa dynamic load C ndi wotsika kwambiri malinga ndi njira ya moyo, kotero kuti bearing yosankhidwa ikhoza kukhala yodzaza kwambiri pochita.

 

4. Kuwonjezera pa ntchito yabwinobwino, imafunikanso kunyamula katundu wolemera kwambiri, ndipo bearing ikuzungulira.

 

Pazochitika zonsezi, katundu womwe chimbalangondocho chingapirire sichidalira kutopa kwa zinthuzo, koma pa kuchuluka kwa kusintha kosatha kwa msewu wothamanga womwe umayambitsidwa ndi katunduyo.