PART NO : AP0740T                    
 

555-S​
Timken Front Axle Outer Cone Bearing

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  :  555-S
Design Units  :  Imperial
Cage Type  :  Stamped Steel
C1 - Dynamic Radial Rating (Two-Row, 1 million revolutions)¹  :  394000 N
C90(2) - Dynamic Radial Rating (Two-Row, 90 million revolutions)²  :  102000 N

BEARING DIMENSIONS
Bore (d)  :  57.150 mm
Cone Width (B)  :  36.678 mm

ABUTMENT AND FILLET DIMENSIONS​
R - Cone Backface "To Clear" Radius³  :  3.600 mm
da - Cone Frontface Backing Diameter  :  70 mm
db - Cone Backface Backing Diameter  :  76 mm
Ab - Cage-Cone Frontface Clearance  :  2 mm
Aa - Cage-Cone Backface Clearance  :  1.8 mm
a - Effective Center Location⁴  :  -9.4 mm

BASIC LOAD RATINGS
C90 - Dynamic Radial Rating (90 million revolutions)⁵  :  58600 N
C1 - Dynamic Radial Rating (1 million revolutions)⁶  :  226000 N
C0 - Static Radial Rating  :  248000 N
C_a90 - Dynamic Thrust Rating (90 million revolutions)⁷  :  34700 N

FACTORS
K - Factor⁸  :  1.69
G1 - Heat Generation Factor (Roller-Raceway)  :  91
G2 - Heat Generation Factor (Rib-Roller End)  :  21.1
Cg - Geometry Factor​  :  0.111

BEARING LIFE CALCULATION TOOL