Babban aikin ƙira na musamman;yana haɗa mai ragewa, mota da birki, tare da babban juzu'i, ƙaramar amo, ƙarancin halin yanzu, da aiki mai tsayi.
Wani sabon nau'in motar birki wanda aka kera musamman bisa ga buƙatun aiki na crane, wanda ya dace da: igiyar wutar lantarki guda ɗaya, ɗamarar ɗaki biyu, gantry crane-large / trolley, injin tafiye-tafiyen lantarki guda ɗaya, da sauransu.