Mpira mphero akalowa bolodi zoweta pang'onopang'ono m'malo ndi aloyi mbale zitsulo mu mkulu manganese zitsulo, koma monga mbale zitsulo mu ntchito mosalekeza mpira mphero liner, pang'onopang'ono m'malo zitsulo manganese ndi bolodi akalowa akalowa kukhala waukulu msika chitukuko.
Cylinder liner kuwonjezera kuteteza thupi, komanso zimakhudza kayendedwe ka akupera sing'anga, kuti azolowere osiyana chikhalidwe ntchito (akupera ndi bwino akupera), mawonekedwe.