Timken NA749 – 742D
Tapered Roller Bearings - TNA (Tapered Double, non-adjustable) Imperial
(BRAND)：TIMKEN
(Availability)：In Stock
(EMAIL)：info@noksbearings.com
Detailed data of
NA749 – 742D
Specifications
Cone Part Number
NA749
Cup Part Number
742D
Related Assembly Number(s)
NA749-90044
Design Unit
Inch
Dimensions
d - Bore
82.550 mm
D - Cup Outer Diameter
155.575 mm
T - Bearing Width across Cones
101.6 mm
C - Double Cup Width
85.725 mm
Abutment and Fillet Dimensions
R - Cone Backface "To Clear" Radius1
3.5 mm
r - Cup Backface "To Clear" Radius2
1.5 mm
db - Cone Backface Backing Diameter
99 mm
Da - Cup Frontface Backing Diameter
143.26 mm
Basic Load Ratings
C90 - Dynamic Radial Rating (90 million revolutions)3
97600 N
C1 - Dynamic Radial Rating (1 million revolutions)4
656000 N
C5
54400 N
C906
170000 N
Factors
K - Factor7
1.80
e - ISO Factor8
0.33
Y1 - ISO Factor9
2.08
Y2 - ISO Factor10
3.09
Similar to product
NA749 – 742D
