NNU4068 KOYO Double-row cylindrical roller bearings
Brand Name:KOYO
Model Number:NNU4068
Series:HH224300
Cone Part Number:HH224346H
Design Units:Imperial
Cage Type:Stamped Steel
C1 - Dynamic Radial Rating (Two-Row, 1 million revolutions)1:302000 lbf
C90(2) - Dynamic Radial Rating (Two-Row, 90 million revolutions)2:78400 lbf
d:4.5000 in
B - Cone Width:2.6250 in
PDF NNU4068

Product Details

SeriesHH224300
Cone Part NumberHH224346H
Design UnitsImperial
Cage TypeStamped Steel
C1 - Dynamic Radial Rating (Two-Row, 1 million revolutions)1302000 lbf
C90(2) - Dynamic Radial Rating (Two-Row, 90 million revolutions)278400 lbf
d4.5000 in
B - Cone Width2.6250 in
R - Cone Backface To Clear Radius30.280 in
da - Cone Frontface Backing Diameter5.2 in
db - Cone Backface Backing Diameter5.79 in
Ab - Cage-Cone Frontface Clearance0.15 in
Aa - Cage-Cone Backface Clearance0.08 in
a - Effective Center Location4-0.74 in
C90 - Dynamic Radial Rating (90 million revolutions)545000 lbf
C1 - Dynamic Radial Rating (1 million revolutions)6174000 lbf
C0 - Static Radial Rating192000 lbf
Ca90 - Dynamic Thrust Rating (90 million revolutions)725100 lbf
K - Factor81.79
G1 - Heat Generation Factor (Roller-Raceway)351.4
G2 - Heat Generation Factor (Rib-Roller End)37.6
Cg - Geometry Factor0.116
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Company Profile

TIMKEN BEARING MFG.CORP
Phone 409-782-6227
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