Biyemeje gukora imashini zubaka pin, ibice byingenzi bikoreshwa muri excavator ni pin ihuza impera yinyuma ya boom na platifomu, pin ihuza hagati ya platifomu na silinderi, pin ihuza hagati yimpera yo hagati ya boom na silinderi, guhuza pin hagati yicyapa cyo hejuru cyamatwi na silinderi, nibindi, ibice byo gusaba byerekanwe hepfo