NNU4992 KOYO Double-row cylindrical roller bearings
Brand Name:KOYO
Model Number:NNU4992
Series:27600
Cone Part Number:27689
Design Units:Imperial
Cage Type:Stamped Steel
C1 - Dynamic Radial Rating (Two-Row, 1 million revolutions)1:45900 lbf
C90(2) - Dynamic Radial Rating (Two-Row, 90 million revolutions)2:11900 lbf
d:3.2813 in
B - Cone Width:1.0000 in
PDF NNU4992

Product Details

Series27600
Cone Part Number27689
Design UnitsImperial
Cage TypeStamped Steel
C1 - Dynamic Radial Rating (Two-Row, 1 million revolutions)145900 lbf
C90(2) - Dynamic Radial Rating (Two-Row, 90 million revolutions)211900 lbf
d3.2813 in
B - Cone Width1.0000 in
R - Cone Backface To Clear Radius30.03 in
da - Cone Frontface Backing Diameter3.54 in
db - Cone Backface Backing Diameter3.54 in
Ab - Cage-Cone Frontface Clearance0.09 in
Aa - Cage-Cone Backface Clearance0.05 in
a - Effective Center Location40.02 in
C90 - Dynamic Radial Rating (90 million revolutions)56830 lbf
C1 - Dynamic Radial Rating (1 million revolutions)626300 lbf
C0 - Static Radial Rating39900 lbf
Ca90 - Dynamic Thrust Rating (90 million revolutions)74860 lbf
K - Factor81.4
G1 - Heat Generation Factor (Roller-Raceway)98.2
G2 - Heat Generation Factor (Rib-Roller End)41.8
Cg - Geometry Factor0.120
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Company Profile

FGDB Pump Machinery Equipment Co., Ltd.
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