Tsutsa da kayan aikin niƙa Tsutsotsi silinda ne, zaren zare tare da tsagi mai tsini a samansa. Thekayan tsutsawheeled wheeled wheel that meshes da tsutsa, yana mai da jujjuyawar motsin tsutsa zuwa motsi na linzamin kwamfuta na kayan aiki. An yanke hakora a kan kayan tsutsa a wani kusurwa wanda ya dace da kusurwar tsagi mai helical a kan tsutsa.

A cikin injin niƙa, ana amfani da tsutsa da kayan tsutsa don sarrafa motsin kan ko tebur. Motoci ne ke tuka tsutsa yawanci, kuma yayin da yake juyawa, yana shiga haƙoran kayan tsutsotsi, wanda ke haifar da motsi. Wannan motsi yawanci daidai yake sosai, yana ba da damar daidaitaccen matsayi na kan niƙa ko tebur.

Ɗaya daga cikin fa'idodin amfani da tsutsa da kayan tsutsotsi a cikin injinan niƙa shine yana ba da babban matakin fa'ida na inji, yana ba da damar ƙaramin mota don fitar da tsutsa yayin da yake samun daidaitaccen motsi. Bugu da kari, saboda hakora na tsutsakayan aiki shiga tare da tsutsa a wani kusurwa mara zurfi, akwai ƙarancin juzu'i da lalacewa akan abubuwan da aka gyara, tsutsa & dabaran tsutsa wanda ke haifar da tsawon rayuwar sabis na tsarin.