Chitsulo chopangidwa ndi mipira yokhazikika chokhala ndi mpweya ndi chromium chinasankhidwa ndikulimba kuti chipirire kupsinjika kwakukulu pakati pa chinthu chozungulira ndi mphete zonyamula.
Kupaka kaboni pa mphete zamkati ndi zakunja ndi njira yofunikira yolimbikitsira kwa ogulitsa ma bearing ambiri a TPI. Kudzera mu chithandizo chapadera ichi chotenthetsera, kuuma pamwamba pa msewu wa raceway kumawonjezeka; zomwe zimachepetsa kuwonongeka moyenerera.
Chitsulo choyera kwambiri chikupezeka m'mabotolo ena a TPI standard ball bearings tsopano, ndipo kutopa kwambiri kumapezeka moyenerera. Popeza kutopa kokhudzana ndi kukhudzana nthawi zambiri kumachitika chifukwa cha zinthu zolimba zomwe sizili zachitsulo, mabotolo masiku ano amafunika ukhondo wapamwamba kwambiri.