Cylindrical roller bearings is a kind of detachable bearings ,it is easy to install and tear dowm,it's advantage is much more obvious especially under the demands of outside ring and inside ring,the excess coupling between bearing and hole in outside shell.The amendment contact between balls and roll away nest reduced the pressure in fring.Meanwhile,compare to similar ball bearing ,it also can stand much more radical load.what's more ,some type of cylindrical roller bearing even can suffer from some axial load.