NNU4952 KOYO Double-row cylindrical roller bearings

Brand Name: KOYO
Model Number: NNU4952
Cone Part Number: LL450749AA
Design Units: Imperial
Cage Type: Stamped Steel
C1 - Dynamic Radial Rating (Two-Row, 1 million revolutions)1: 90000 lbf
C90(2) - Dynamic Radial Rating (Two-Row, 90 million revolutions)2: 23300 lbf
d: 10.5 in
B - Cone Width: 1.3401 in
R - Cone Backface To Clear Radius3: 0.06 in
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Product Details

Cone Part Number LL450749AA
Design Units Imperial
Cage Type Stamped Steel
C1 - Dynamic Radial Rating (Two-Row, 1 million revolutions)1 90000 lbf
C90(2) - Dynamic Radial Rating (Two-Row, 90 million revolutions)2 23300 lbf
d 10.5 in
B - Cone Width 1.3401 in
R - Cone Backface To Clear Radius3 0.06 in
da - Cone Frontface Backing Diameter 10.87 in
db - Cone Backface Backing Diameter 10.94 in
Ab - Cage-Cone Frontface Clearance -0.02 in
Aa - Cage-Cone Backface Clearance 0.03 in
a - Effective Center Location4 0.76 in
C90 - Dynamic Radial Rating (90 million revolutions)5 13400 lbf
C1 - Dynamic Radial Rating (1 million revolutions)6 51700 lbf
C0 - Static Radial Rating 114000 lbf
Ca90 - Dynamic Thrust Rating (90 million revolutions)7 8390 lbf
K - Factor8 1.6
G1 - Heat Generation Factor (Roller-Raceway) 916.6
G2 - Heat Generation Factor (Rib-Roller End) 595.1
Cg - Geometry Factor 0.161
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Phone 409-782-6227
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