NNU4992 KOYO Double-row cylindrical roller bearings

Brand Name: KOYO
Model Number: NNU4992
Series: 542000
Cone Part Number: EE542220
Design Units: Imperial
Cage Type: Stamped Steel
C1 - Dynamic Radial Rating (Two-Row, 1 million revolutions)1: 548000 lbf
C90(2) - Dynamic Radial Rating (Two-Row, 90 million revolutions)2: 142000 lbf
d: 22.0000 in
B - Cone Width: 3.0000 in
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Product Details

Series 542000
Cone Part Number EE542220
Design Units Imperial
Cage Type Stamped Steel
C1 - Dynamic Radial Rating (Two-Row, 1 million revolutions)1 548000 lbf
C90(2) - Dynamic Radial Rating (Two-Row, 90 million revolutions)2 142000 lbf
d 22.0000 in
B - Cone Width 3.0000 in
R - Cone Backface To Clear Radius3 0.25 in
da - Cone Frontface Backing Diameter 23.03 in
db - Cone Backface Backing Diameter 23.39 in
Ab - Cage-Cone Frontface Clearance 0.15 in
Aa - Cage-Cone Backface Clearance 0.59 in
a - Effective Center Location4 2.55 in
C90 - Dynamic Radial Rating (90 million revolutions)5 81600 lbf
C1 - Dynamic Radial Rating (1 million revolutions)6 315000 lbf
C0 - Static Radial Rating 728000 lbf
Ca90 - Dynamic Thrust Rating (90 million revolutions)7 71000 lbf
K - Factor8 1.15
G1 - Heat Generation Factor (Roller-Raceway) 5730
G2 - Heat Generation Factor (Rib-Roller End) 782
Cg - Geometry Factor 0.26
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Company Profile

Phone 409-782-6227
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