Imashini ya GRINDMASTER crankshaft abrasive umukandara wo gukenyera ikoreshwa mugusiga amavuta ya kashe yamavuta, ikinyamakuru nyamukuru, no guhuza ijosi ryinkoni ya crankshaft. Iyo usize, igihangano cyatewe kandi kigasukurwa, hanyuma ibice bigasukurwa n'umukandara uteye.
Hariho inzira ebyiri zo kuzunguruka mugihe cyo gusya, kandi icyerekezo cya nyuma cyo gusya ni kimwe nicyerekezo gisanzwe cyo gukora cya moteri (urebye kuruhande rwa flawheheel); nyuma yo gusya, kuzunguruka-kumisha no gutesha agaciro birakorwa, kandi ibikoresho bikenera sisitemu yo gutunganya amazi.