PART NO : AP0657KT                    
 

SET 409 (45280 / 45220)
Timken Inner Cup & Cone Bearing Kit

This is the most basic and most widely used type of tapered roller bearing. It consists of two main separable parts: the cone (inner ring) assembly and the cup (outer ring). It is typically mounted in opposing pairs on a shaft.

APPLICATION
MERITOR
ROCKWELL​

SPECIFICATIONS
Cup Part Number  :  45220
Cone Part Number  :  45280
Design Units  :  Imperial
Bearing Weight  :  1.3kg
Cage Type  :  Stamped Steel

DIMENSIONS
d - Bore  :  44.450 mm
D - Cup Outer Diameter  :  104.775 mm
B - Cone Width  :  30.958 mm
C - Cup Width  :  23.813 mm
T - Bearing Width  :  30.163 mm

ABUTMENT AND FILLET DIMENSIONS​
R - Cone Backface "To Clear" Radius¹  :  0.760 mm
r - Cup Backface "To Clear" Radius²  :  3.30 mm
da - Cone Frontface Backing Diameter​  :  54.10 mm
db - Cone Backface Backing Diameter  :  55.12 mm
Da - Cup Frontface Backing Diameter  :  99.10 mm
Db - Cup Backface Backing Diameter  :  92.96 mm
Ab - Cage-Cone Frontface Clearance  :  2.5 mm
Aa - Cage-Cone Backface Clearance  :  1.8 mm
a - Effective Center Location³  :  -8.1 mm

BASIC LOAD RATINGS
C90 - Dynamic Radial Rating (90 million revolutions)^4​  :  39700 N
C1 - Dynamic Radial Rating (1 million revolutions)⁵​  :  153000 N
C0 - Static Radial Rating​  :  189000 N
Ca90 - Dynamic Thrust Rating (90 million revolutions)⁶​  :  22600 N

FACTORS
K - Factor7​  :  1.76
e - ISO Factor⁸​  :  0.33
Y - ISO Factor⁹  :  1.8
G1 - Heat Generation Factor (Roller-Raceway)  :  63.5
G2 - Heat Generation Factor (Rib-Roller End)  :  16.9
Cg - Geometry Factor  :  0.0971

BEARING LIFE CALCULATION TOOL