Bawul wurin zama na ƙarfe ya ƙunshi rami a tsakiyar filogi tare da axis.An rufe wannan rami a ƙasa kuma an saka shi da abin da ya dace da allurar sealant a saman.Ana yin alluran silin a cikin rami, kuma bawul ɗin duba da ke ƙasa da abin da ya dace da allurar yana hana mashin ɗin yin gudu ta baya.Sealant yana fitowa daga tsakiyar rami ta ramukan radial zuwa ramukan mai mai da ke shimfida tsawon saman wurin zama na filogi.

Domin rage karfin juyi na al'ada karfe wurin zama lubricated toshe bawuloli,Bawul wurin zama na ƙarfeana ƙirƙira kuma ana amfani da su sosai.Baya ga halaye na al'ada mai ubricated toshe bawuloli, da matsa lamba daidaita bawuloli kuma suna da wadannan halaye:

• 1. Lokacin da aka buɗe bawul, matsa lamba a cikin ƙananan ɗakin na bawul ɗin yana daidaitawa tare da matsakaicin matsa lamba a cikin bututun.Babban matsi mai lamba mai a cikin babban ɗakin yana haifar da tura jikin fulogi zuwa ƙasa, kuma ɗan rata ya bayyana tsakanin mazugi na filogi da farfajiyar murfin bawul ɗin, ƙarfin jujjuyawar jikin filogi yana raguwa sosai.
• 2. A cikin yanayin zafi mai zafi, ƙaddamarwar thermal na filogi za a iya tunawa ta tashi da faɗuwarta.Bawul ɗin lubricated na mai, kodayake amfani da lubrication na mai na iya rage ƙarfin buɗewa da rufewa daidai, amma yana iya haifar da gurɓataccen matsakaici.Saboda haka, an zaɓi man shafawa da aka rufe don ainihin yanayin aiki.