PART NO : AP0742KT                    
 

SET 423 (6461A / 6420)​
Timken 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 FL941, MFS73

SPECIFICATIONS
Cone Part Number  :  6461A
Cup Part Number  :  6420
Design Units  :  Imperial
Bearing Weight  :  4.2kg
Cage Type  :  Stamped Steel

BEARING DIMENSIONS
d - Bore  :  76.2 mm
D - Cup Outer Diameter  :  149.225 mm
B - Cone Width​  :  54.229 mm
C - Cup Width​  :  44.450 mm
T - Bearing Width​  :  53.975 mm

ABUTMENT AND FILLET DIMENSIONS​
R - Cone Backface "To Clear" Radius1  :  9.650 mm
r - Cup Backface "To Clear" Radius2  :  3.30 mm
da - Cone Frontface Backing Diameter  :  89.41 mm
db - Cone Backface Backing Diameter  :  107.95 mm
Da - Cup Frontface Backing Diameter  :  140 mm
Db - Cup Backface Backing Diameter  :  129.03 mm
Ab - Cage-Cone Frontface Clearance  :  1.5 mm
Aa - Cage-Cone Backface Clearance  :  2.3 mm
a - Effective Center Location3  :  -15 mm

BASIC LOAD RATINGS
C90 - Dynamic Radial Rating (90 million revolutions)⁴  :  107000 N
C1 - Dynamic Radial Rating (1 million revolutions)⁵  :  411000 N
C0 - Static Radial Rating  :  463000 N
Ca90 - Dynamic Thrust Rating (90 million revolutions)⁶​  :  66000 N

FACTORS
K - Factor⁷  :  1.61
e - ISO Factor⁸  :  0.36
Y - ISO Factor⁹  :  1.66
G1 - Heat Generation Factor (Roller-Raceway)  :  158
G2 - Heat Generation Factor (Rib-Roller End)  :  29.1
Cg - Geometry Factor  :  0.0931

BEARING LIFE CALCULATION TOOL