Timken NA78250 – 78549D
Tapered Roller Bearings - TNA (Tapered Double, non-adjustable) Imperial
(BRAND)：TIMKEN
(Availability)：In Stock
(EMAIL)：info@noksbearings.com
Detailed data of
NA78250 – 78549D
Specifications
Cone Part Number
NA78250
Cup Part Number
78549D
Related Assembly Number(s)
NA78250-90032
Design Unit
Inch
Dimensions
d - Bore
63.500 mm
D - Cup Outer Diameter
139.700 mm
T - Bearing Width across Cones
77.788 mm
C - Double Cup Width
51.803 mm
Abutment and Fillet Dimensions
R - Cone Backface "To Clear" Radius1
2.300 mm
r - Cup Backface "To Clear" Radius2
1.5 mm
db - Cone Backface Backing Diameter
85 mm
Da - Cup Frontface Backing Diameter
131.83 mm
Basic Load Ratings
C90 - Dynamic Radial Rating (90 million revolutions)3
52600 N
C1 - Dynamic Radial Rating (1 million revolutions)4
353000 N
C5
77900 N
C906
91500 N
Factors
K - Factor7
0.67
e - ISO Factor8
0.87
Y1 - ISO Factor9
0.78
Y2 - ISO Factor10
1.16
Similar to product
NA78250 – 78549D
