4CR48 KOYO Four-row cylindrical roller bearings

Brand Name:KOYO
Model Number:4CR48
Series:745
Cone Part Number:750W
Design Units:Imperial
Cage Type:Stamped Steel
C1 - Dynamic Radial Rating (Two-Row, 1 million revolutions)1:124000 lbf
C90(2) - Dynamic Radial Rating (Two-Row, 90 million revolutions)2:32200 lbf
d:3.1250 in
B - Cone Width:1.8375 in

Product Details

Series745
Cone Part Number750W
Design UnitsImperial
Cage TypeStamped Steel
C1 - Dynamic Radial Rating (Two-Row, 1 million revolutions)1124000 lbf
C90(2) - Dynamic Radial Rating (Two-Row, 90 million revolutions)232200 lbf
d3.1250 in
B - Cone Width1.8375 in
R - Cone Backface To Clear Radius30.14 in
da - Cone Frontface Backing Diameter3.54 in
db - Cone Backface Backing Diameter3.78 in
Ab - Cage-Cone Frontface Clearance0.08 in
Aa - Cage-Cone Backface Clearance0.05 in
a - Effective Center Location4-0.47 in
C90 - Dynamic Radial Rating (90 million revolutions)518500 lbf
C1 - Dynamic Radial Rating (1 million revolutions)671400 lbf
C0 - Static Radial Rating93800 lbf
Ca90 - Dynamic Thrust Rating (90 million revolutions)710300 lbf
K - Factor81.8
G1 - Heat Generation Factor (Roller-Raceway)159.6
G2 - Heat Generation Factor (Rib-Roller End)26.3
Cg - Geometry Factor0.0898
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