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Supplementary code for spherical roller bearings
发布时间:2021-10-14浏览次数:0

Supplementary code name for spherical roller bearings, suffix used to identify certain characteristics of spherical roller bearings, including SKF spherical roller bearings open design, sealed spherical roller bearings, vibration machinery bearings:


C2: Radial clearance is smaller than that of ordinary group


C3: The radial clearance is greater than that of the normal group


C4: Radial clearance is greater than C3


C5: Radial clearance is greater than C4


C08: Rotation accuracy to ISO tolerance class 5


C083: C08 + C3


C084: C08 + C4


2CS: Hydrogenated NBR contact sealing ring with steel frame on both sides of bearing. The outer ring is provided with lubrication groove and three lubrication holes, and is covered by a plastic belt.


2CS2: Fluorine rubber (FPM) contact seals with steel frame on both sides of bearing. The outer ring is round with lubrication groove and three lubrication holes, and covered by a plastic belt.


2CS5: Hydrogenated nitrile rubber (HNBR) contact seal with steel frame on both sides of bearing. The other thing is the same as 2CS2


HA3: externally hardened inner ring


K: Conical hole, taper: 1:12


K30: Conical hole, taper: 1:30


P5: Dimensional accuracy and rotation accuracy conform to ISO tolerance class 5


P6: Dimensional accuracy and rotation accuracy conform to ISO tolerance class 6


P62: P6 + C2


VA405: Bearings for vibrating machinery, with hardened cages


VA406: VA405 and inner bore with polytetrafluoroethylene (PTFE) coating


VE552 (E) : outer ring with three equally published threaded holes on one side for connection to lifting gear; E means bearing equipped with lifting ring bolts


VE553 (E) : Same as VE552, but with threaded holes on both sides


VG114: Stamped steel cage with hardened surface


VQ424: Higher rotation accuracy than C08


W: There is no lubrication groove and lubrication hole in the outer ring


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: Bearings filled with solid oil


W77: same as W33, but lubrication hole with plug


W513: W26 + W33


235220: Hardened inner ring, inner hole with spiral groove.


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