Spur Gear wani nau'in kayan injin ne wanda ya ƙunshi ƙafafun cylindrical tare da madaidaiciya hakora aiki daidaici zuwa gaxis na gemu. Waɗannan gearshin suna ɗaya daga cikin nau'ikan da aka fi so kuma ana amfani dasu a cikin ɗakunan aikace-aikace. Abu: 20crmnti