Timken 744AH – 742D
Tapered Roller Bearings - TDO (Tapered Double Outer) Imperial
(BRAND)：TIMKEN
(Availability)：In Stock
(EMAIL)：info@noksbearings.com
Specifications
Series
745
Cone Part Number
744AH
Cup Part Number
742D
Design Unit
Inch
Cage Material
Stamped Steel
Dimensions
d - Bore
73.025 mm
D - Cup Outer Diameter
155.575 mm
B - Cone Width
46.673 mm
C - Double Cup Width
85.725 mm
T - Bearing Width across Cones
101.600 mm
Abutment and Fillet Dimensions
R - Cone Backface "To Clear" Radius1
3.600 mm
r - Cup Backface "To Clear" Radius2
1.5 mm
db - Cone Backface Backing Diameter
91 mm
Da - Cup Frontface Backing Diameter
143.26 mm
Aa - Cage-Cone Backface Clearance
1 mm
a - Effective Center Location3
-11.9 mm
Basic Load Ratings
C90 - Dynamic Radial Rating (One-Row, 90 million revolutions)4
93800 N
C1 - Dynamic Radial Rating (Two-Row, 1 million revolutions)5
630000 N
C90(2) - Dynamic Radial Rating (Two-Row, 90 million revolutions)6
163000 N
C7
52200 N
Factors
K - Factor8
1.8
e - ISO Factor9
0.33
Y1 - ISO Factor10
2.08
Y2 - ISO Factor11
3.09
Cg - Geometry Factor12
0.0886
