Ma bearing a mpira wopindika mbali ziwiri amakhala ndi chotsukira shaft, ma washer awiri okhala ndi nyumba ndi ma consegments awiri a cage-ball. Chotsukira shaft ichi chimayikidwa pakati pa ma cages awiriwa, zomwe zimathandiza kuti bearing itenge katundu wozungulira mbali zonse ziwiri. Cage imakhala ndi mipira pomwe chotsukira shaft choyimilira chimawatsogolera.
