Timken M278749 – M278710CD
Tapered Roller Bearings - TDO (Tapered Double Outer) Imperial
(BRAND)：TIMKEN
(Availability)：In Stock
(EMAIL)：info@noksbearings.com
Specifications
Series
M278700
Cone Part Number
M278749
Cup Part Number
M278710CD
Design Unit
Inch
Cage Material
Pin-Type
Related Assembly Number(s)
M278749-902A3
Dimensions
d - Bore
571.500 mm
D - Cup Outer Diameter
812.800 mm
B - Cone Width
155.575 mm
C - Double Cup Width
263.525 mm
T - Bearing Width across Cones
333.375 mm
Abutment and Fillet Dimensions
R - Cone Backface "To Clear" Radius1
6.4 mm
r - Cup Backface "To Clear" Radius2
1.5 mm
db - Cone Backface Backing Diameter
615 mm
Da - Cup Frontface Backing Diameter
788.40 mm
Aa - Cage-Cone Backface Clearance
13.5 mm
a - Effective Center Location3
-11.4 mm
Basic Load Ratings
C90 - Dynamic Radial Rating (One-Row, 90 million revolutions)4
1180000 N
C1 - Dynamic Radial Rating (Two-Row, 1 million revolutions)5
7890000 N
C90(2) - Dynamic Radial Rating (Two-Row, 90 million revolutions)6
2050000 N
C7
669000 N
Factors
K - Factor8
1.76
e - ISO Factor9
0.7
Y1 - ISO Factor10
0.97
Y2 - ISO Factor11
1.44
Cg - Geometry Factor12
0.299
