NHBB bearings

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NHBB bearing

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NHBB bearing

NHBB bearing part number system

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

Prefix Suffix Definition
. 1 BACK-TO-BACK DUPLEX
. 2 FACE-TO-FACE DUPLEX
. 3 TANDEM DUPLEX
. 4 UNIVERSAL DUPLEX
. B RELIEVED LAND ON INNER OR OUTER RING. DIGITS ADDED TO INDICATE DESIGN OF RINGS AND TYPE OF RETAINER INCLUDING PHENOLIC PLASTIC
. C CHANGE FROM STANDARD DIMENSIONS
. D RIBBON RETAINER (USED ONLY WHEN BOTH CROWN OR RIBBON AVAILABLE FOR A GIVEN SIZE
. EE EXTENDED INNER RING
. G GROOVED OUTER RING
. H WITH THROUGH-HOLE (PIVOT TYPES)
. K RADIAL 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
. L3 ONE SEAL - GLASS REINFORCED TEFLON. TO INDICATE 2 SEALS USE LL3.
. L4 ONE SEAL - GLASS REINFORCED TEFLON WITH STAINLESS STEEL INSERT. TO DESIGNATE 2 SEALS USE LL4 .
. L5 ONE SEAL - SYNTHETIC RUBBER WITH INTEGRAL STAINLESS STEEL INSERT. TO DESIGNATE 2 SEALS USE LL5.
. M METRIC DIMENSIONS
. P ONE SHIELD
. P2 SHIELD ON SIDE OPPOSITE FLANGE
. PI SHIELD ON FLANGE SIDE
. PP TWO SHIELDS
. T PHENOLIC CROWN RETAINER. DIGITS ADDED TO DENOTE MATERIALS OTHER THAN PHENOLIC
. UP NARROW WIDTH-SINGLE SHIELD ONLY
. W LOW TORQUE
. Z SPRING SEPARATORS
F . FLANGED BEARINGS
N . BERYLLIUM COPPER
R . RETAINER RADIAL
S . STAINLESS STEEL


 

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