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 NumberLL450749AA
Design UnitsImperial
Cage TypeStamped Steel
C1 - Dynamic Radial Rating (Two-Row, 1 million revolutions)190000 lbf
C90(2) - Dynamic Radial Rating (Two-Row, 90 million revolutions)223300 lbf
d10.5 in
B - Cone Width1.3401 in
R - Cone Backface To Clear Radius30.06 in
da - Cone Frontface Backing Diameter10.87 in
db - Cone Backface Backing Diameter10.94 in
Ab - Cage-Cone Frontface Clearance-0.02 in
Aa - Cage-Cone Backface Clearance0.03 in
a - Effective Center Location40.76 in
C90 - Dynamic Radial Rating (90 million revolutions)513400 lbf
C1 - Dynamic Radial Rating (1 million revolutions)651700 lbf
C0 - Static Radial Rating114000 lbf
Ca90 - Dynamic Thrust Rating (90 million revolutions)78390 lbf
K - Factor81.6
G1 - Heat Generation Factor (Roller-Raceway)916.6
G2 - Heat Generation Factor (Rib-Roller End)595.1
Cg - Geometry Factor0.161
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Company Profile

TIMKEN BEARING MFG.CORP
Phone 409-782-6227
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