Suffixes C

C
  1. Deviating or modified internal design with same boundary dimensions. As a rule the significance of the letter is bound to the particular bearing series
  2. Y-bearing with cylindrical outside diameter, e.g. YET 205 C
C08
Geometrical tolerances to P5 tolerance class 
C083
C08 + C3
C084
C08 + C4
C1
Internal clearance smaller than C2
C2
Internal clearance smaller than Normal
C2H
Axial internal clearance in the upper half of the C2 range
C2L
Axial internal clearance in the lower half of the C2 range
C3
Internal clearance greater than Normal
C3P
Displaced clearance range comprising the upper half of the C3 plus the lower half of the C4 clearance range
C4
Internal clearance greater than C3
C5
Internal clearance greater than C4
CA
  1. Spherical roller bearing of C design, but with retaining flanges on the inner ring, guide ring centred on the inner ring and machined brass cage
  2. Bearing for universal matching. Two bearings arranged back-to-back or face-to-face have axial internal clearance smaller than Normal (CB)
CACSpherical roller bearing of CA design, but with retaining flanges on the inner ring, guide ring centred on the inner ring and machined brass cage
CB
  1. Bearing for universal matching. Two bearings arranged back-to-back or face-to-face have Normal axial internal clearance.
  2. Double row bearing with controlled axial clearance
  3. Single row angular contact ball bearing, high-speed B design, 15° contact angle
CCBearing for universal matching. Two bearings arranged back-to-back or face-to-face have axial internal clearance greater than Normal (CB)
CC(J)
Bearing with flangeless inner ring, guide ring centred on the inner ring, two stamped steel cages
CCJA
Bearing with flangeless inner ring, guide ring centred on the outer ring raceway, two stamped steel cages
CDSingle row angular contact ball bearing, high-capacity design, 15° contact angle
CE
Single row angular contact ball bearing, high-speed E design, 15° contact angle
CJ
Bearing with flangeless inner ring, guide ring centred on the inner ring, two stamped steel cages
CL0Accuracy to ABMA tolerance class 0 (inch bearings)
CL00Accuracy to ABMA tolerance class 00 (inch bearings)
CL3Accuracy to ABMA tolerance class 3 (inch bearings)
CL7A
Pinion bearing, superseded by CL7C
CL7CHigh-performance design
CLN
Tighter tolerances for ring widths and total (abutment) width in accordance with ISO tolerance class 6X
CNNormal internal clearance; only used together with an additional letter that identifies a reduced or displaced clearance range

Examples:
  • CNH Reduced clearance range corresponding to the upper half of the actual clearance range
  • CNL  Reduced clearance range corresponding to the lower half of the actual clearance range
  • CNM Reduced clearance range corresponding to the middle half of the actual clearance range
  • CNP Displaced clearance range comprising the upper half of the actual clearance range plus the lower half of the next larger clearance range
  • CNR Normal clearance range in accordance with the withdrawn DIN 620-4:1982
The above letters H, L, M and P are also used together with the clearance classes C2, C3, C4 and C5, e.g. C2H
CSContact seal of acrylonitrile-butadiene rubber (NBR) on one side of the bearing
2CSCS contact seal on both sides of the bearing
CS2Contact seal of fluoro rubber (FKM) on one side of the bearing
2CS2CS2 contact seal on both sides of the bearing
CS5Contact seal of hydrogenated acrylonitrile-butadiene rubber (HNBR) on one side of the bearing
2CS5CS5 contact seal on both sides of the bearing
CV
Modified internal design, full complement roller set
Cxx(x)
Special clearance, the two- or three-digit number immediately following the C is the mean axial internal clearance in μm
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