INA RNA4903-XL Needle Roller Bearings

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Brand Name: INA
Model Number: RNA4903-XL
Cone Part Number: LM720648
Design Units: Imperial
Cage Type: Stamped Steel
C1 - Dynamic Radial Rating (Two-Row, 1 million revolutions)1: 51500 lbf
C90(2) - Dynamic Radial Rating (Two-Row, 90 million revolutions)2: 13400 lbf
d: 4.0000 in
B - Cone Width: 1.0000 in
R - Cone Backface To Clear Radius3: 0.06 in
PDF RNA4903-XL

Product Details

Cone Part Number LM720648
Design Units Imperial
Cage Type Stamped Steel
C1 - Dynamic Radial Rating (Two-Row, 1 million revolutions)1 51500 lbf
C90(2) - Dynamic Radial Rating (Two-Row, 90 million revolutions)2 13400 lbf
d 4.0000 in
B - Cone Width 1.0000 in
R - Cone Backface To Clear Radius3 0.06 in
da - Cone Frontface Backing Diameter 4.29 in
db - Cone Backface Backing Diameter 4.33 in
Ab - Cage-Cone Frontface Clearance 0.08 in
Aa - Cage-Cone Backface Clearance 0.07 in
a - Effective Center Location4 0.19 in
C90 - Dynamic Radial Rating (90 million revolutions)5 7670 lbf
C1 - Dynamic Radial Rating (1 million revolutions)6 29600 lbf
C0 - Static Radial Rating 45400 lbf
Ca90 - Dynamic Thrust Rating (90 million revolutions)7 6020 lbf
K - Factor8 1.27
G1 - Heat Generation Factor (Roller-Raceway) 127.6
G2 - Heat Generation Factor (Rib-Roller End) 62.7
Cg - Geometry Factor 0.134
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