NNU4938 KOYO Double-row cylindrical roller bearings

Brand Name: KOYO
Model Number: NNU4938
Series: LL382100
Cone Part Number: LL382149
Cup Part Number: LL382110
Design Units: Imperial
Bearing Weight: 54.8 Kg
Cage Type: Stamped Steel
d: 698.500 mm
D: 819.150 mm
PDF NNU4938

Product Details

Series LL382100
Cone Part Number LL382149
Cup Part Number LL382110
Design Units Imperial
Bearing Weight 54.8 Kg
Cage Type Stamped Steel
d 698.500 mm
D 819.150 mm
B - Cone Width 63.5 mm
C - Cup Width 50.800 mm
B 63.5 mm
R - Cone Backface To Clear Radius1 3.300 mm
r - Cup Backface To Clear Radius2 3.30 mm
da - Cone Frontface Backing Diameter 717.04 mm
db - Cone Backface Backing Diameter 720.09 mm
Da - Cup Frontface Backing Diameter 803.91 mm
Db - Cup Backface Backing Diameter 791.97 mm
Ab - Cage-Cone Frontface Clearance 0.8 mm
Aa - Cage-Cone Backface Clearance 5.3 mm
a - Effective Center Location3 54.6 mm
C90 - Dynamic Radial Rating (90 million revolutions)4 61500 lbf
C1 - Dynamic Radial Rating (1 million revolutions)5 237000 lbf
C0 - Static Radial Rating 716000 lbf
Ca90 - Dynamic Thrust Rating (90 million revolutions)6 36800 lbf
K - Factor7 1.67
e - ISO Factor8 0.35
Y - ISO Factor9 1.72
G1 - Heat Generation Factor (Roller-Raceway) 9940
G2 - Heat Generation Factor (Rib-Roller End) 2090.8
Cg - Geometry Factor 0.274
View more

Company Profile

View more

Recommended Products

All Products Contact Now