IGear Shaft ilawula ngokwemilo ye-Axis, ishafti inokwahlulwa ibe yi-crankshaft kunye ne-shaft ethe nkqo. Ngokutsho komthamo we-shaft, inokwahlulwa ngakumbi:
. Yeyona shaft eqhelekileyo ngoomatshini, njengeshafti kubasebenzi abahlukeneyo.
.
.