DIN6 ndiko kurongeka kweiyomukati helical gear. Kazhinji isu tine nzira mbiri dzekusangana nekururama kwepamusoro.
1) Hobbing + kugaya zvemukati giya
2) Simba skiving yegiya remukati
Zvakadaro kune diki remukati helical giya, hobbing hakusi nyore kugadzirisa, saka kazhinji isu taizoita simba reskiving kuti tisangane nehupamhi hwepamusoro uye zvakare kugona kwepamusoro .Kune hombe yemukati helical giya, tichashandisa hobbing pamwe nekukuya nzira. Mushure mekufamba kwemagetsi kana kukuya, simbi yepakati katoni senge 42CrMo ichaita nitriding kuwedzera kuoma uye kuramba.