Ka'idar aiki na birki ya fi girma daga gogayya, yin amfani da pads da birki diski (drum) da taya da gogayya ta ƙasa, makamashin motsa jiki na abin hawa zai canza zuwa makamashin zafi bayan tashin hankali, motar zata tsaya. Tsarin birki mai kyau da inganci dole ne ya samar da tsayayye, isasshe kuma mai iya sarrafa ƙarfin birki, kuma yana da ingantaccen watsa ruwa da ƙarfin watsa zafi don tabbatar da cewa ƙarfin da direban ke yi daga feda ɗin birki na iya zama cikakke kuma yadda ya kamata zuwa babban famfo da ƙananan famfo, da kuma guje wa gazawar ruwa da lalata birki da zafi mai zafi ke haifarwa. Akwai birkin diski da birki na ganga, amma baya ga fa'idar tsada, birkin ganga ba su da inganci fiye da birkin diski.
gogayya
"Friction" yana nufin juriyar motsi tsakanin filayen tuntuɓar abubuwa biyu a cikin motsin dangi. Girman ƙarfin juzu'i (F) yayi daidai da samfurin madaidaicin juzu'i (μ) da matsi mai kyau a tsaye (N) akan saman ƙarfin juzu'i, wanda aka bayyana ta hanyar dabara ta zahiri: F=μN. Don tsarin birki: (μ) yana nufin madaidaicin juzu'i tsakanin faifan birki da faifan birki, kuma N ita ce Ƙarfin Feda wanda birki caliper piston ke yi akan kushin birki. Mafi girman juzu'in da aka samar ta hanyar mafi girman juzu'i, amma juzu'in juzu'i tsakanin kushin birki da diski zai canza saboda tsananin zafi da jujjuyawar ke haifarwa, wato, ana canza ma'aunin juzu'i (μ) tare da zafin jiki, kowane nau'i na birki kushin saboda daban-daban kayan da daban-daban gogayya coefficient lankwasa, don haka daban-daban birki pads za su sami daban-daban mafi kyau duka zafin jiki na aiki, Kuma da zartar da zafin jiki kewayon aiki, wannan shi ne kowa da kowa dole ne ya san lokacin da sayen birki gammaye.
Canja wurin ƙarfin birki
Ƙarfin da birki caliper piston ke yi akan kushin birki ana kiransa Ƙarfin Ƙarfi. Bayan an ƙara ƙarfin ƙarfin direban da ke taka birki ta hanyar lever na injin feda, ƙarfin yana ƙara ƙarfi ta hanyar haɓaka wutar lantarki ta amfani da ƙa'idar bambancin matsa lamba don tura famfon mai sarrafa birki. Ruwan matsa lamba da babban famfo na birki ya fitar yana amfani da tasirin watsa wutar da ba zai iya daidaitawa ba, wanda ake watsa shi zuwa kowane juzu'in famfo ta hanyar bututun birki, kuma ana amfani da "ka'idar PASCAL" don ƙara matsa lamba da tura piston na sub- famfo don yin aiki da ƙarfi akan kushin birki. Dokar Pascal tana nufin gaskiyar cewa matsa lamba iri ɗaya ne a ko'ina cikin rufaffiyar akwati.
Ana samun matsa lamba ta hanyar rarraba ƙarfin da ake amfani da shi ta wurin da aka matsa. Lokacin da matsa lamba ya yi daidai, za mu iya cimma tasirin haɓakar wutar lantarki ta hanyar canza ma'auni na yanki da aka yi amfani da shi da damuwa (P1 = F1 / A1 = F2 / A2 = P2). Don tsarin birki, rabon jimillar famfo zuwa matsa lamba na sub-pump shine rabon yanki na piston na jimlar famfo zuwa yankin piston na sub-pump.