Toyana NA4902 needle roller bearings

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What is NA4902 bearing cross reference?

Brand Name:Toyana
Model Number:NA4902
Series:28000
Cone Part Number:28156
Cup Part Number:28317
Design Units:Imperial
Bearing Weight:0.4 Kg
Cage Type:Stamped Steel
d:39.980 mm
D:80.035 mm

Product Details

Series28000
Cone Part Number28156
Cup Part Number28317
Design UnitsImperial
Bearing Weight0.4 Kg
Cage TypeStamped Steel
d39.980 mm
D80.035 mm
B - Cone Width19.649 mm
C - Cup Width15.875 mm
B20.142 mm
R - Cone Backface To Clear Radius12.290 mm
r - Cup Backface To Clear Radius21.52 mm
da - Cone Frontface Backing Diameter44.96 mm
db - Cone Backface Backing Diameter49.02 mm
Da - Cup Frontface Backing Diameter73.90 mm
Db - Cup Backface Backing Diameter69.09 mm
Ab - Cage-Cone Frontface Clearance1.8 mm
Aa - Cage-Cone Backface Clearance0.3 mm
a - Effective Center Location3-3.6 mm
C90 - Dynamic Radial Rating (90 million revolutions)44390 lbf
C1 - Dynamic Radial Rating (1 million revolutions)516900 lbf
C0 - Static Radial Rating15500 lbf
Ca90 - Dynamic Thrust Rating (90 million revolutions)63020 lbf
K - Factor71.45
e - ISO Factor80.4
Y - ISO Factor91.49
G1 - Heat Generation Factor (Roller-Raceway)20.7
G2 - Heat Generation Factor (Rib-Roller End)12.5
Cg - Geometry Factor0.0709
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Company Profile

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