Ma bearing a mpira odzilungamitsa okha ali ndi mizere iwiri ya mipira, msewu wodziwika bwino wozungulira mu mphete yakunja ndi mizere iwiri yozama yosasinthasintha mu mphete yamkati. Ma bearing a mpira odzilungamitsa okha ali ndi msewu wozungulira mu mphete yakunja yokhala ndi pakati popindika kofanana ndi pakati pa bearing. Izi zimathandiza mphete yamkati, mipira, ndi khola kuzungulira momasuka mozungulira pakati pa bearing, kusunga mgwirizano.
