Ingalo ye-rocker emotweni empeleni iyisivikelo esihlome kabili esiqondisa kabusha amandla asuka ku-push rod bese sisebenza ekugcineni kwe-valve rod ukuze siphushe i-valve ivule. Isilinganiso sobude bengalo kuzo zombili izinhlangothi zengalo ye-rocker ibizwa ngokuthi i-rocker arm ratio, ecishe ibe ngu-1.2~1.8. Ingxenye eyodwa yengalo ende isetshenziselwa ukusunduza i-valve. Indawo yokusebenza yekhanda lengalo ye-rocker ngokuvamile yenziwe nge-cylindrical shape. Lapho ingalo ye-rocker inyakaza, ingaginqika eduze kobuso bokugcina be-valve rod, ukuze amandla phakathi kwakho kokubili akwazi ukusebenza eduze kwe-axis yevalvu ngangokunokwenzeka. Ingalo ye-rocker iphinde ibhojwe ngamafutha okugcoba nezimbobo zikawoyela. Isikulufu sokulungisa sokususa i-valve sifakwa embotsheni enentambo ekugcineni kwengalo emfushane yengalo ye-rocker. Ibhola lekhanda lesikulufu lixhumene ne-concave tee phezulu kwenduku yokuphusha.
Ingalo ye-rocker ayinalutho isethi ku-rocker arm shaft ngokusebenzisa i-rocker arm bushing, futhi yakamuva isekelwe esihlalweni se-rocker arm shaft, futhi ingalo ye-rocker ibhobozwa ngezimbobo zikawoyela.
Ingalo ye-rocker ishintsha isiqondiso samandla ukusuka ku-push rod bese ivula i-valve.
