Li-bearings tsena li khetholloa ke sebōpeho sa tsona sa cylindrical le li-rollers tse hlophisitsoeng ka mokhoa o pota-potileng ho pota-pota.Li-roller li tataisoa ke marang-rang a marang-rang holim'a mehele ea ka hare le ea ka ntle, e ba nolofalletsang ho mamella meroalo ea radial le axial.Ka moralo ona o ikhethang, li-roller tsa rona tsa cylindrical li ka fihlella lebelo le holimo le metsamao e nepahetseng, ea li etsa tse loketseng ho sebelisoa lits'ebetsong tse boima joalo ka lisebelisoa tsa mochini, lisebelisoa tsa kaho le litsamaiso tsa likoloi:
1. Mola o le mong oa li-cylindrical roller bearings: NU, NJ, NUP, N, NF le lihlooho tse ling.
2. Mela e 'meli ea li-cylindrical roller bearings: NN, NNU, NNF, NNCL le lihlooho tse ling.