NNU4938 KOYO Double-row cylindrical roller bearings

Brand Name: KOYO
Model Number: NNU4938
Series: LM48500
Cone Part Number: LM48548A
Cup Part Number: LM48514XP
Design Units: Imperial
Bearing Weight: 0.30 Kg
Cage Type: Stamped Steel
d: 34.925 mm
D: 68.263 mm
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Product Details

Series LM48500
Cone Part Number LM48548A
Cup Part Number LM48514XP
Design Units Imperial
Bearing Weight 0.30 Kg
Cage Type Stamped Steel
d 34.925 mm
D 68.263 mm
B - Cone Width 18.288 mm
C - Cup Width 13.970 mm
B 18.037 mm
R - Cone Backface To Clear Radius1 0.760 mm
r - Cup Backface To Clear Radius2 1.27 mm
da - Cone Frontface Backing Diameter 42.16 mm
db - Cone Backface Backing Diameter 40.39 mm
Da - Cup Frontface Backing Diameter 63.00 mm
Db - Cup Backface Backing Diameter 58.93 mm
Ab - Cage-Cone Frontface Clearance 2 mm
Aa - Cage-Cone Backface Clearance 0.3 mm
a - Effective Center Location3 -3.6 mm
C90 - Dynamic Radial Rating (90 million revolutions)4 3760 lbf
C1 - Dynamic Radial Rating (1 million revolutions)5 14500 lbf
C0 - Static Radial Rating 14200 lbf
Ca90 - Dynamic Thrust Rating (90 million revolutions)6 2430 lbf
K - Factor7 1.55
e - ISO Factor8 0.38
Y - ISO Factor9 1.59
G1 - Heat Generation Factor (Roller-Raceway) 18
G2 - Heat Generation Factor (Rib-Roller End) 10.6
Cg - Geometry Factor 0.0666
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Phone 409-782-6227
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