Timken 398 – 394D
Tapered Roller Bearings - TDO (Tapered Double Outer) Imperial
(BRAND)：TIMKEN
(Availability)：In Stock
(EMAIL)：info@noksbearings.com
Specifications
Series
395
Cone Part Number
398
Cup Part Number
394D
Design Unit
Inch
Cage Material
Stamped Steel
Related Assembly Number(s)
398-902A1
Dimensions
d - Bore
50.8 mm
D - Cup Outer Diameter
110 mm
B - Cone Width
21.996 mm
C - Double Cup Width
46.038 mm
T - Bearing Width across Cones
52.388 mm
Abutment and Fillet Dimensions
R - Cone Backface "To Clear" Radius1
0.800 mm
r - Cup Backface "To Clear" Radius2
0.8 mm
db - Cone Backface Backing Diameter
62 mm
Da - Cup Frontface Backing Diameter
104.65 mm
Aa - Cage-Cone Backface Clearance
1.3 mm
a - Effective Center Location3
-0.8 mm
Basic Load Ratings
C90 - Dynamic Radial Rating (One-Row, 90 million revolutions)4
25600 N
C1 - Dynamic Radial Rating (Two-Row, 1 million revolutions)5
172000 N
C90(2) - Dynamic Radial Rating (Two-Row, 90 million revolutions)6
44600 N
C7
17600 N
Factors
K - Factor8
1.45
e - ISO Factor9
0.4
Y1 - ISO Factor10
1.68
Y2 - ISO Factor11
2.5
Cg - Geometry Factor12
0.0984
