SKF spherical roller bearing supplement code

SKF spherical roller bearing supplement code, suffix is used to identify some characteristics of spherical roller bearing, including open design of SKF spherical roller bearing, sealed spherical roller bearing, vibration mechanical bearing: C2: radial clearance Less than the normal group C3: the radial clearance is larger than the normal group C4: the radial clearance is greater than C3 C5: the radial clearance is greater than C4 C08: the rotation accuracy is in accordance with the ISO tolerance class 5 C083: C08 + C3 C084: C08 + C4 2CS: bearing Hydrogenated nitrile rubber (NBR) contact seals with steel skeletons on both sides. The outer ring has a lubrication groove and three lubrication holes and is covered by a plastic strip. 2CS2: Fluororubber (FPM) contact seals with steel frame on both sides of the bearing. The outer ring has a lubrication groove and three lubrication holes, and is covered by a plastic belt. 2CS5: Hydrogenated nitrile rubber (HNBR) contact seal with steel frame on both sides of the bearing. Others are the same as 2CS2 HA3: Surface hardened inner ring K: tapered hole, taper: 1:12 K30: tapered hole, taper: 1:30 P5: dimensional accuracy and rotation accuracy in accordance with ISO tolerance class 5 P6: dimensional accuracy and rotation accuracy Complies with ISO tolerance class 6 P62: P6+C2 VA405: Bearings for vibration machinery, cage with case hardening VA406: VA405 and inner hole with PTFE coating VE552 (E): 3 on the outer ring side An average of the published threaded holes to connect the lifting device; E indicates that the bearing is equipped with a lifting eye bolt VE553 (E): the same as the VE552, but with threaded holes VG114 on both sides: surface hardened stamped steel cage VQ424: rotation accuracy is higher than C08 W: outer ring without lubrication groove and lubrication hole W20: outer ring with three lubrication holes W26: inner ring with six lubrication holes W33: outer ring with lubrication groove and three lubrication holes W64: bearing W77 with solid oil: Same as W33, but the lubrication hole is connected with plug W513: W26+W33 235220: the surface hardened inner ring, the inner hole with spiral groove.