Double Row Spherical Roller Bearing 22305 22306 22307 22308 22309 22310 22311 22312 22313 22314 22315 22316 22317 22318 MB/MBK/CA/CAK/CC/CCK/E/EK/K W33C3 RADIAL INTERNAL CLEARANCE Chik spherical roller bearings are produced as standard with normal radial internal clearance and most are also available with a greater C3 clearance. Many bearings can also be supplied with a smaller C2 clearance or the much greater C4 or C5 clearances. Chik spherical roller bearings for vibratory applications are produced as standard with C4 clearance. The clearance limits are in accordance with ISO 5753:1 and are valid for bearings before mounting under zero measuring load. LUBRICATION Chik spherical roller bearings are not sealed and are not greased, they can be lubricated using grease. The outer ring of spherical roller bearings are made with lubrication holes and a groove for feeding lubricant. The outer ring may also be configured with oil holes only depending on fitting, mounting. INNER RING BORE Spherical roller bearings are produced with a cylindrical or a tapered bore. Bearings with tapered bore are mounted directly to a tapered pivot or to a cylindrical pivot using adapter sleeves.