spherical roller bearings are self-aligning function, but is also very strong. Spherical Roller Bearings are two rows of rollers, in the outer ring, there is a sharing of spherical roller Road, there are two Inner Raceway, with the bearing axial tilt into a relative perspective. This is the bearing attractive design features, in many demanding applications can not be replaced. KMR spherical roller bearings are open, sealed and applied to the specific application of bearings. We can produce the diameter from 20mm~1  800mm KMR spherical roller bearings. 25mm~220mm KMR sealed spherical roller bearings etc. Following is the internal structure of KMR different product descriptions.C2    Radial internal clearance smaller than NormalC3  Radial internal clearance greater than NormalC4  Radial internal clearance greater than C3C5  Radial internal clearance greater than C4CC      Two window-type steel cages, flangeless inner ring andguide ring centred on the inner ring.CAME4   Machined brass cage, Out ring with lubrication holes and groove.2CS  Sheet steel reinforced contact seal of acrylonitrile-butadiene rubber (NBR) on both sides of the bearing. Annular groove and  three lubrication holes in the outer ring covered with a polymer band. Lubricated with an extreme pressure bearing grease  according to the table2CS2  Sheet steel reinforced contact seal of fluoro rubber (FKM) on both sides of the bearing. Annular groove and three lubrication  holes in the outer ring; covered with a polymer band. Lubricated with a polyurea high-temperature grease2CS5  Sheet steel reinforced contact seal of  hydrogenated acrylonitrile-butadiene rubber (HNBR) on both sides of the bearing. Otherwise as 2CS2E/A     Enhanced design. EAE4    Enhanced design press steel cage,Out ring with lubrication holes and groove.M       Machined brass cage, ball centred.MA      Machined brass cage, outer ring centred.  MB      Machined brass cage, inner ring centred.HA3  Case-hardened inner ringK  Tapered bore, taper 1:12K30  Tapered bore, taper 1:30S       With an groove, lubrication holes in out rings.P5  Dimensional and running accuracy to ISO tolerance class 5P6  Dimensional and running accuracy to ISO tolerance class 6VA405  Bearings for vibratory applications with surface hardened cagesVA406  VA405 and PTFE-coated boreVE552(E) Outer ring with three equally  spaced threaded holes in one side face to accommodate hoisting tackle; the E indicates that appropriate eye bolts are  supplied with the bearingsVE553(E) As VE552 but with threaded holes in both side facesVG114  Surface hardened pressed steel cageVQ424  Running accuracy better than C08VT143  Grease fill with an extreme pressure grease according to the tableW  Without annular groove and lubrication holes in outer ringW20  Three lubrication holes in outer ringW26  Six lubrication holes in inner ringW33  Annular groove and three lubrication holes in outer ringW77  Plugged W33 lubrication holes