NNU4072 KOYO Double-row cylindrical roller bearings

Brand Name: KOYO
Model Number: NNU4072
Cone Part Number: DX940730
Cup Part Number: DX252051
Design Units: Imperial
Bearing Weight: 16.700 Kg
Cage Type: Stamped Steel
d: 209.550 mm
D: 317.500 mm
B - Cone Width: 63.5 mm
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Product Details

Cone Part Number DX940730
Cup Part Number DX252051
Design Units Imperial
Bearing Weight 16.700 Kg
Cage Type Stamped Steel
d 209.550 mm
D 317.500 mm
B - Cone Width 63.5 mm
C - Cup Width 46.038 mm
B 63.5 mm
R - Cone Backface To Clear Radius1 4.320 mm
r - Cup Backface To Clear Radius2 3.30 mm
da - Cone Frontface Backing Diameter 226.82 mm
db - Cone Backface Backing Diameter 232.92 mm
Da - Cup Frontface Backing Diameter 300.00 mm
Db - Cup Backface Backing Diameter 286.00 mm
Ab - Cage-Cone Frontface Clearance 5.3 mm
Aa - Cage-Cone Backface Clearance 8.1 mm
a - Effective Center Location3 7.9 mm
C90 - Dynamic Radial Rating (90 million revolutions)4 52500 lbf
C1 - Dynamic Radial Rating (1 million revolutions)5 202000 lbf
C0 - Static Radial Rating 290000 lbf
Ca90 - Dynamic Thrust Rating (90 million revolutions)6 47000 lbf
K - Factor7 1.12
e - ISO Factor8 0.52
Y - ISO Factor9 1.15
G1 - Heat Generation Factor (Roller-Raceway) 912.5
G2 - Heat Generation Factor (Rib-Roller End) 126.1
Cg - Geometry Factor 0.146
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