SB6445A KOYO Single-row deep groove ball bearings

Brand Name: KOYO
Model Number: SB6445A
Series: M349500
Cone Part Number: M349549A
Cup Part Number: M349512XX
Design Units: Imperial
Bearing Weight: 13.5 Kg
Cage Type: Stamped Steel
d: 257.175 mm
D: 342.900 mm
PDF SB6445A

Product Details

Series M349500
Cone Part Number M349549A
Cup Part Number M349512XX
Design Units Imperial
Bearing Weight 13.5 Kg
Cage Type Stamped Steel
d 257.175 mm
D 342.900 mm
B - Cone Width 57.150 mm
C - Cup Width 44.450 mm
B 57.150 mm
R - Cone Backface To Clear Radius1 10.670 mm
r - Cup Backface To Clear Radius2 3.30 mm
da - Cone Frontface Backing Diameter 268.99 mm
db - Cone Backface Backing Diameter 289.05 mm
Da - Cup Frontface Backing Diameter 333.00 mm
Db - Cup Backface Backing Diameter 322.07 mm
Ab - Cage-Cone Frontface Clearance 4.3 mm
Aa - Cage-Cone Backface Clearance 3.8 mm
a - Effective Center Location3 2.5 mm
C90 - Dynamic Radial Rating (90 million revolutions)4 39700 lbf
C1 - Dynamic Radial Rating (1 million revolutions)5 153000 lbf
C0 - Static Radial Rating 321000 lbf
Ca90 - Dynamic Thrust Rating (90 million revolutions)6 23600 lbf
K - Factor7 1.68
e - ISO Factor8 0.35
Y - ISO Factor9 1.73
G1 - Heat Generation Factor (Roller-Raceway) 1423.3
G2 - Heat Generation Factor (Rib-Roller End) 193.4
Cg - Geometry Factor 0.147
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