Helical Gears suna kama da na'urorin spur sai dai hakora sun kasance a kusurwa zuwa ga shaft , maimakon a layi daya da shi kamar yadda a cikin kayan aikin spur .Hakoran da ke daidaitawa sun fi tsayi fiye da hakora akan spr gear na daidai diamita. Hakora sun haifar da egars masu ɗimbin yawa da ke biye da bambanci da nau'ikan spur gears masu girman iri ɗaya.
Ƙarfin hakori ya fi girma saboda hakora sun fi tsayi
Babban lamba a kan hakora yana ba da damar kayan aikin helical don ɗaukar kaya fiye da kayan spur
Tsawon tsayin yanayin tuntuɓar yana rage ingancin kayan aikin helical dangane da kayan spur.