Most spherical roller bearing models are determined according to the system, which consists of the basic model number plus or without one or more prefixes and/or suffixes (→Basic bearing model system). Examples and application options for spherical roller bearings are as follows. Example 24013 CCK30/W33 in the formula 24013u003dCCu003dK30u003dW33u003dSpherical roller bearing application selection prefix BS2-.. bearing, according to the drawing number to determine the model ZE used in SensorMount (electronically controlled mounting method) the basic model of the bearing is shown in Table 1 Four digits: drawing number identification suffix-internal design BC is suitable for bearings CA with roller-guided cast iron cages for the main shaft of wind turbines, CAC has ribs on both sides of the inner ring, with a guide ring guided by the cage, and the machine Cut brass cage CC(J), CJ inner ring without ribs, with a guide ring guided by the cage, two stamped steel cages CCJA, EJA inner ring without ribs, with a guide ring guided by the outer ring Ring, two stamped steel cages E optimized internal design, used to improve the carrying capacity of the 213, 222 and 223 series: inner ring without ribs and two stamped steel cages. The outer ring has a lubrication groove and three lubrication holes. d ≤ 65 mm: Guide ring guided by the inner ring d> 65 mm: Guide ring guided by the cage Suffix-External design (seals, stop grooves, etc.) -CS, -2CS with contact on one or both sides NBR seals -CS2, -2CS2 with contact FKM seals on one or both sides -CS5, -2CS5 with contact HNBR seals on one or both sides -RS, -2RS with contact NBR seals on one or both sides Parts -RS5, -2RS5 with contact HNBR seals on one or both sides K tapered hole, taper 1:12K30 tapered hole, taper 1:30 suffix-Cage design F machined steel cage, inner ring guide FA machined Steel cage, outer ring guide J stamped steel cage, inner ring guide JA stamped steel cage, outer ring guide MA machined brass cage, outer ring guide suffix-material, heat treated 235220 surface hardened inner ring, inner hole Suffix of surface hardened inner ring with spiral groove HA3-accuracy, clearance, preload, silent operation C08 rotation accuracy meets P5 tolerance level C083C08 + C3C084C08 + C4C2 radial internal clearance is smaller than normal grade C3 radial internal clearance is greater than normal grade C4 radial internal clearance is greater than C3 C5 radial internal clearance is greater than C4 P5 Dimensional accuracy and rotation accuracy conform to P5 tolerance level P6 Dimension and rotational accuracy conform to P6 tolerance level P62P6 + C2 suffix-bearing set, matching bearing pair (not applicable) suffix- Dimensional stability (not applicable) suffix-Lubrication GEM9 uses LGHB 2 grease filled 70 100% GLE uses LGWM 2 grease filled 25 45% VT143 uses LGEP 2 grease filled 25 45% VT143B uses LGEP 2 grease filled 45 60% VT143C uses LGEP 2 grease filled with 70100% W64 solid oil W outer ring without lubrication grooves and lubrication holes W20 outer ring with three lubrication holes W26 inner ring with six lubrication holes W33 outer ring with lubrication grooves and three lubrication holes W33X Outer ring with lubrication grooves and six lubrication holes W77 plug-in W33 lubrication holes W513W26 + W33 suffix-other variants R505 bearings for railway axleboxes VA405 bearings for vibration machinery, surface hardened stamped steel cage VA406 is the same as VA405, but cylindrical The inner hole of the inner ring with PTFE coating VA991 is suitable for high-speed applications. Bearing VE552(E) has an outer ring with three equidistant threaded holes on one side to connect lifting equipment. E means the bearing is equipped with eye bolts. VE553(E) is the same as VE552(E), but with threaded holes on both sides. VG114 The surface-hardened stamped steel cage VQ424 has a higher rotation accuracy than C08