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Description of supplementary code for spherical roller bearing

Description of supplementary code for spherical roller bearing

2020-04-28

Spherical roller bearing supplementary code, suffix used to identify certain characteristics of spherical roller bearing, including SKF spherical roller bearing open design, sealed spherical roller bearing, vibration machinery bearing:

C2: radial clearance is smaller than normal group

C3: radial clearance is larger than normal group

C4: radial clearance is greater than C3

C5: radial clearance is greater than C4

C08: rotation accuracy meets ISO tolerance level 5

C083: C08 + C3

C084: C08 + C4

2CS: NBR contact seal ring with steel frame on both sides of bearing.Outer ring with lubrication groove and three lubrication holes, and covered by a plastic belt.

2CS2: bearing with steel frame on both sides of the fluorine rubber (FPM) contact seal ring.Outer ring with lubrication groove and three lubrication holes, and covered by a plastic belt.

2CS5: HNBR contact seal with steel skeleton on both sides of bearing.Everything else is the same as 2CS2

HA3: inner ring of surface hardening

K: tapered hole, taper: 1:12

K30: tapered hole, taper: 1:30

P5: dimensional accuracy and rotation accuracy meet ISO tolerance level 5

P6: dimensional accuracy and rotation accuracy meet ISO tolerance grade 6

P62: P6 + C2

VA405: bearing for vibration machinery, cage with face hardening

VA406: VA405 and inner bore with PTFE coating

VE552 (E) : an outer ring with three average published threaded holes on one side to connect the lifting gear;E means the bearing is fitted with a ring bolt

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

VG114: face hardened stamping steel cage

VQ424: rotation accuracy is higher than C08

W: 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 with solid oil

W77: same as W33, but with lubricating holes and plugs

W513: W26 + W33

235220: face hardened inner ring, inner hole with spiral groove.


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