NN3072 KOYO Double-row cylindrical roller bearings
Brand Name:KOYO
Model Number:NN3072
Series:L540000
Cone Part Number:L540048
Design Units:Imperial
Cage Type:Stamped Steel
C1 - Dynamic Radial Rating (Two-Row, 1 million revolutions)1:82500 lbf
C90(2) - Dynamic Radial Rating (Two-Row, 90 million revolutions)2:21400 lbf
d:7.874 in
B - Cone Width:1.0938 in
PDF NN3072

Product Details

SeriesL540000
Cone Part NumberL540048
Design UnitsImperial
Cage TypeStamped Steel
C1 - Dynamic Radial Rating (Two-Row, 1 million revolutions)182500 lbf
C90(2) - Dynamic Radial Rating (Two-Row, 90 million revolutions)221400 lbf
d7.874 in
B - Cone Width1.0938 in
R - Cone Backface To Clear Radius30.06 in
da - Cone Frontface Backing Diameter8.19 in
db - Cone Backface Backing Diameter8.27 in
Ab - Cage-Cone Frontface Clearance0.1 in
Aa - Cage-Cone Backface Clearance0.08 in
a - Effective Center Location40.56 in
C90 - Dynamic Radial Rating (90 million revolutions)512300 lbf
C1 - Dynamic Radial Rating (1 million revolutions)647400 lbf
C0 - Static Radial Rating91800 lbf
Ca90 - Dynamic Thrust Rating (90 million revolutions)78350 lbf
K - Factor81.47
G1 - Heat Generation Factor (Roller-Raceway)504
G2 - Heat Generation Factor (Rib-Roller End)226
Cg - Geometry Factor0.137
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Company Profile

TIMKEN BEARING MFG.CORP
Phone 409-782-6227
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