Bearing Overview (Continued) ________________________________________________________________________

Extended Inner Ring Open Extended Inner Ring Shielded Flanged Extended Inner Ring Open Flanged Extended Inner Ring Shieled

BEARING NOMENCLATURE

BASIC DIMENSIONS Symbol Description Page d Bearing bore 46-58 D Bearing outer diameter 46-58 Df Flange diameter 46-57 W Open bearing width 46-57 Ws Shielded bearing width 46-57 Wi Extended inner race width (open) 46-57 Wis Extended inner race width (shielded) 46-57 Wf Flange width (open) 46-57 Wis Flange width (shielded) 46-57 li Land diameter (inner race) 13 lo Land diameter (outer race) 13 r Max. mating fillet radius (typical) 46-58 H Thrust bearing height 58 OTHER PARAMETERS Symbol Description Page Dw Ball diameter 10 N Number of balls per row 32,46-58 Ri Raceway radius (inner race) 10 Ro Raceway radius (outer race) 10 fi Raceway curvature ratio (inner race) 10 fo Raceway curvature ratio (outer race 10 B Total bearing raceway curvature 10 ∆r Radial play 10-11 ∆a Axial play 10-11 OTHER PARAMETERS (continued) Symbol Description Page α Ball contact angle 12-13, 32 αo Initial ball contact angle 12-13, 32 dp Ball pitch diameter 13 uf Free angle of misalignment 13 Fr Radial load 23-25 Fa Axial or thrust load 23-25, 32 d Axial displacement under thrust load 32 dN Speed factor 20 fn Lubricant factor 20-21 L10 Bearing fatigue life (90% reliability) 22 Lna Bearing fatigue life after normal adjustments 22 a1 Material and reliability life correction factor 23 a2 Operating conditions life correction factor 23 P Equivalent load 23-25 Pr Equivalent radial load 23-25 Pa Equivalent axial load 23-25 C Dynamic radial load rating 22, 46-58 Ct C derated for higher temperature 22 Co Static radial load rating 25, 46-58 Cs Static axial load rating 46-58 ft Temperature correction factor 22 fp Interference factor 29