Igiya le-spiral bevel wuhlobo lwegiya le-bevel elakhelwe ukudlulisa amandla nokunyakaza phakathi kwama-shaft ahlanganayo ema-engeli ahlukene.Afaka iphrofayili yezinyo le-helical elinikeza ukusebenza okushelelayo, okuthule, namandla amakhulu nokuqina kunamagiya e-bevel aqondile.Amagiya e-Spiral bevel avame ukusetshenziswa emishinini yezimboni, umehluko wezimoto, kanye nezinhlelo zokusebenza zokuhambisa amandla ezidinga i-torque ephezulu nokunemba.Zenzelwe ukudluliswa kwamandla okuphumelelayo futhi zinciphise ukungqubuzana nokuguga, okuzenza zibe ukukhetha okuthembekile nokusebenzayo ezimbonini eziningi.