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AS9120 & ISO9001 Approved

NHBB bearing part number system

EXAMPLE: S F R 188 PP EE D C8 K25

S - Stainless steel
FR - Flanged outer ring Retainer radial
188 - Basic bearing number
PP - Two shields
EE Extended inner ring
D - Two piece ribbon retainer
C8 - Change from standard dimensions
K25 - Radial play 0.0002 inch to 0.0005 inch

Part number system

PrefixSuffixDefinition
.1BACK-TO-BACK DUPLEX
.2FACE-TO-FACE DUPLEX
.3TANDEM DUPLEX
.4UNIVERSAL DUPLEX
.BRELIEVED LAND ON INNER OR OUTER RING. DIGITS ADDED TO INDICATE DESIGN OF RINGS AND TYPE OF RETAINER INCLUDING PHENOLIC PLASTIC
.CCHANGE FROM STANDARD DIMENSIONS
.DRIBBON RETAINER (USED ONLY WHEN BOTH CROWN OR RIBBON AVAILABLE FOR A GIVEN SIZE
.EEEXTENDED INNER RING
.GGROOVED OUTER RING
.HWITH THROUGH-HOLE (PIVOT TYPES)
.KRADIAL PLAY-FOLLOWED BY EITHER TWO OR THREE DIGITS FOR EXAMPLE: K13 RADIAL PLAY OF 0.0001 - 0.0003 K811 RADIAL PLAY OF 0.0008 - 0.0011
.L3ONE SEAL - GLASS REINFORCED TEFLON. TO INDICATE 2 SEALS USE LL3.
.L4ONE SEAL - GLASS REINFORCED TEFLON WITH STAINLESS STEEL INSERT. TO DESIGNATE 2 SEALS USE LL4 .
.L5ONE SEAL - SYNTHETIC RUBBER WITH INTEGRAL STAINLESS STEEL INSERT. TO DESIGNATE 2 SEALS USE LL5.
.MMETRIC DIMENSIONS
.PONE SHIELD
.P2SHIELD ON SIDE OPPOSITE FLANGE
.PISHIELD ON FLANGE SIDE
.PPTWO SHIELDS
.TPHENOLIC CROWN RETAINER. DIGITS ADDED TO DENOTE MATERIALS OTHER THAN PHENOLIC
.UPNARROW WIDTH-SINGLE SHIELD ONLY
.WLOW TORQUE
.ZSPRING SEPARATORS
F.FLANGED BEARINGS
N.BERYLLIUM COPPER
R.RETAINER RADIAL
S.STAINLESS STEEL

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