Ma stud type track roller ndi mayunitsi athunthu omwe ali ndi stud yopangidwa ndi makina, ma thrust washers, mphete yakunja ndi singano yozungulira ndi khola kapena seti yonse yozungulira singano kapena cylindrical roller.
Otsatira kamera (ma stud-type track rollers) amachokera pa singano yozungulira yokhala ndi stud yolimba m'malo mwa mphete yamkati.
Chimbalangondo ichi chili ndi mphete yakunja yokhala ndi makoma okhuthala yokhala ndi mbali yowonekera kunja.
Mndandanda wa NUKRE wokhala ndi seti yonse yozungulira yozungulira, chitsogozo cha axial cha mphete yakunja ndi chinthu chozungulira, ndi zisindikizo za labyrinth mbali zonse ziwiri.