Timken HM256849 – HM256810D
Tapered Roller Bearings - TDO (Tapered Double Outer) Imperial
(BRAND)：TIMKEN
(Availability)：In Stock
(EMAIL)：info@noksbearings.com
Specifications
Series
HM256800
Cone Part Number
HM256849
Cup Part Number
HM256810D
Design Unit
Inch
Cage Material
Pin-Type
Related Assembly Number(s)
HM256849-904A4
Dimensions
d - Bore
300.038 mm
D - Cup Outer Diameter
422.275 mm
B - Cone Width
82.550 mm
C - Double Cup Width
136.525 mm
T - Bearing Width across Cones
174.625 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
328 mm
Da - Cup Frontface Backing Diameter
405.10 mm
Aa - Cage-Cone Backface Clearance
5.6 mm
a - Effective Center Location3
-5.6 mm
Basic Load Ratings
C90 - Dynamic Radial Rating (One-Row, 90 million revolutions)4
336000 N
C1 - Dynamic Radial Rating (Two-Row, 1 million revolutions)5
2260000 N
C90(2) - Dynamic Radial Rating (Two-Row, 90 million revolutions)6
586000 N
C7
194000 N
Factors
K - Factor8
1.73
e - ISO Factor9
0.71
Y1 - ISO Factor10
0.95
Y2 - ISO Factor11
1.42
Cg - Geometry Factor12
0.178
