74550/74851D NSK Tapered Roller Bearings Double-row
Brand Name:NSK
Model Number:74550/74851D
Cone Part Number:LL641149A
Design Units:Imperial
Cage Type:Stamped Steel
C1 - Dynamic Radial Rating (Two-Row, 1 million revolutions)1:76800 lbf
C90(2) - Dynamic Radial Rating (Two-Row, 90 million revolutions)2:19900 lbf
d:8.1250 in
B - Cone Width:1.0938 in
R - Cone Backface To Clear Radius3:0.06 in

Product Details

Cone Part NumberLL641149A
Design UnitsImperial
Cage TypeStamped Steel
C1 - Dynamic Radial Rating (Two-Row, 1 million revolutions)176800 lbf
C90(2) - Dynamic Radial Rating (Two-Row, 90 million revolutions)219900 lbf
d8.1250 in
B - Cone Width1.0938 in
R - Cone Backface To Clear Radius30.06 in
da - Cone Frontface Backing Diameter8.35 in
db - Cone Backface Backing Diameter8.43 in
Ab - Cage-Cone Frontface Clearance0.1 in
Aa - Cage-Cone Backface Clearance0.1 in
a - Effective Center Location40.62 in
C90 - Dynamic Radial Rating (90 million revolutions)511400 lbf
C1 - Dynamic Radial Rating (1 million revolutions)644100 lbf
C0 - Static Radial Rating91100 lbf
Ca90 - Dynamic Thrust Rating (90 million revolutions)78010 lbf
K - Factor81.43
G1 - Heat Generation Factor (Roller-Raceway)521.9
G2 - Heat Generation Factor (Rib-Roller End)231.1
Cg - Geometry Factor0.14
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Company Profile

GENERAL BEARING IMPORT COMPANY
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