PART NO : AP0643T                    
 

598A​
Timken Inner 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.

SPECIFICATIONS
Cone Part Number  :  598A
Design Units  :  Imperial
Cage Type  :  Stamped Steel
C1 - Dynamic Radial Rating (Two-Row, 1 million revolutions)¹  :  376000 N
C90(2) - Dynamic Radial Rating (Two-Row, 90 million revolutions)²  :  97500 N

BEARING DIMENSIONS
Bore (d)  :  92.075 mm
Cone Width (B)  :  36.322 mm

ABUTMENT AND FILLET DIMENSIONS​
R - Cone Backface "To Clear" Radius³  :  6.400 mm
da - Cone Frontface Backing Diameter  :  101 mm
db - Cone Backface Backing Diameter  :  113 mm
Ab - Cage-Cone Frontface Clearance  :  2.3 mm
Aa - Cage-Cone Backface Clearance  :  3.8 mm
a - Effective Center Location⁴  :  -2.5 mm

BASIC LOAD RATINGS
C90 - Dynamic Radial Rating (90 million revolutions)⁵​ :  56000 N
C1 - Dynamic Radial Rating (1 million revolutions)^6​  :  216000 N
C0 - Static Radial Rating​  :  319000 N
Ca90 - Dynamic Thrust Rating (90 million revolutions)⁷​  :  42400 N

FACTORS
K - Factor⁸ :  1.32
G1 - Heat Generation Factor (Roller-Raceway) :  151.4
G2 - Heat Generation Factor (Rib-Roller End) :  38.3
Cg - Geometry Factor​ :  0.142

BEARING LIFE CALCULATION TOOL