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
Series 30210
Cone Part Number X30210
Cup Part Number Y30210
Design Unit Metric
Cage Material Stamped Steel

Full Timken Part Number
30210

Dimensions
d - Bore 50 mm
D - Cup Outer Diameter 90.000 mm
B - Cone Width 20 mm
C - Cup Width 17.000 mm
T - Bearing Width 21.750 mm


Abutment and Fillet Dimensions
R - Cone Backface "To Clear" Radius1 = 1.520 mm
r - Cup Backface "To Clear" Radius2 = 1.52 mm
da - Cone Frontface Backing Diameter = 56 mm
db - Cone Backface Backing Diameter = 59 mm
Da - Cup Frontface Backing Diameter = 85.10 mm
Db - Cup Backface Backing Diameter = 81.03 mm
Ab - Cage-Cone Frontface Clearance = 3.8 mm
Aa - Cage-Cone Backface Clearance = 0.8 mm
a - Effective Center Location3 = -2mm