Ua ʻōlelo ʻo Bogie a i ʻole koʻi pahu he set of suspence me nā koʻi komo i lalo o ka semi-trailer a i ʻole kahi kalaka. ʻO ka axle ʻo Bogie he ʻelua mau axles haʻi ʻōlelo / punawelewele a i ʻole ʻelua mau pahu axles. He ʻokoʻa ka lōʻihi o ka axles e kaukaʻi ʻia i ka lōʻihi o ke trailer a i ʻole ke kalaka. 25T, ʻoi loa 30T, a me ka 35T nui loa.