Li-sleeve tsa tungsten carbide le mehele li phetha karolo ea ho beha kapa ho sireletsa shaft ea axle ho thibela ho roala ha shaft. Ka nako e ts'oanang, e theola tlhoko ea boima ba mochini oa ho sila le shaft ntle le ho tima le eona e ka sebelisoa, ka hona ho fokotsa bothata ba ho sebetsana le likarolo tse amehang. Tungsten carbide bushing le matsoho a sebetsa sebakeng se futsanehileng haholo. Joaloka moetsi oa carbide ea nang le setsebi se entsoeng ka samente, re ikemiselitse ho hlahisa lihlahla tse loketseng ka ho fetisisa bakeng sa bareki ba rona, ka thepa e ntle e tala, e ntle ea ho apara ho hanyetsa, ho laola ka thata boleng, re na le botumo bo phahameng indastering ea oli le khase.