1. Abubuwan da ke shigarwa ana iya samun su daga zuwa biyu, wanda ke ba da damar ana siman su a wurin katamta mafi kyau a kowanne rotor.
2. Abun da ke cikin kamfar katamta an loya shi ta hanyar rotoren biyu a hanyoyin tangential, sai dai bayanin halayen da ke ci gaba da ci gaba ne a tsakanin kayayyaki. Don haka, girman katamta yana toga, kuma samunshi yana toga.
3. Tsarin grate mai bada daido da mafi mahimmanci yana kontalin girman kayan dauke, yayin ba da abokin ciniki karin lahira wajen zaɓar yaddaɗa mafi kyau da girman fineness.