Timken Tapered Bearing Cup & Cone Kit - Set 409 (45280 / 45220)

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