Montage of Timken Bearing Products
Batch CAD Cart (0) ▾
  • Cart is empty
  1. Click Here for Batch Download
Request Information Add to CAD Cart
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.
Unit of Measure

Specifications

Series

 N/A 16900

Cone Part Number

 N/A 16986

Cup Part Number

 N/A 16929

Design Unit

 N/A Inch

Cage Material

 N/A Stamped Steel

Dimensions

d - Bore

 N/A 1.6924 in42.987 mm

D - Cup Outer Diameter

 N/A 2.9523 in74.988 mm

B - Cone Width

 N/A 0.7810 in19.837 mm

C - Cup Width

 N/A 0.5625 in14.288 mm

T - Bearing Width

 N/A 0.7625 in19.368 mm

Abutment and Fillet Dimensions

R - Cone Backface "To Clear" Radius1 N/A 0.06 in1.520 mm
r - Cup Backface "To Clear" Radius2 N/A 0.050 in1.27 mm

da - Cone Frontface Backing Diameter

 N/A 1.91 in48.5 mm

db - Cone Backface Backing Diameter

 N/A 2.01 in51 mm

Da - Cup Frontface Backing Diameter

 N/A 2.83 in71.88 mm

Db - Cup Backface Backing Diameter

 N/A 2.68 in68.07 mm

Ab - Cage-Cone Frontface Clearance

 N/A 0.06 in1.5 mm

Aa - Cage-Cone Backface Clearance

 N/A 0.01 in0.3 mm
a - Effective Center Location3 N/A -0.08 in-2 mm

Basic Load Ratings

C90 - Dynamic Radial Rating (90 million revolutions)4 N/A 3470 lbf15400 N
C1 - Dynamic Radial Rating (1 million revolutions)5 N/A 13400 lbf59500 N

C0 - Static Radial Rating

 N/A 16500 lbf73500 N
Ca90 - Dynamic Thrust Rating (90 million revolutions)6 N/A 2640 lbf11700 N

Factors

K - Factor7 N/A 1.31
e - ISO Factor8 N/A 0.44
Y - ISO Factor9 N/A 1.35

G1 - Heat Generation Factor (Roller-Raceway)

 N/A 25.1

G2 - Heat Generation Factor (Rib-Roller End)

 N/A 17.4
Cg - Geometry Factor10 N/A 0.0783
  • 1 These maximum fillet radii will be cleared by the bearing corners.
  • 2 These maximum fillet radii will be cleared by the bearing corners.
  • 3 Negative value indicates effective center inside cone backface.
  • 4 Based on 90 x 106 revolutions L10 life, for The Timken Company life calculation method. C90 and Ca90 are radial and thrust values.
  • 5 Based on 1 x 106 revolutions L10 life, for the ISO life calculation method.
  • 6 Based on 90 x 106 revolutions L10 life, for The Timken Company life calculation method. C90 and Ca90 are radial and thrust values for a single-row, C90(2) is the two-row radial value.
  • 7 These factors apply for both inch and metric calculations. Consult your Timken representative for instruction on use.
  • 8 These factors apply for both inch and metric calculations. Consult your Timken representative for instruction on use.
  • 9 These factors apply for both inch and metric calculations. Consult your Timken representative for instruction on use.
  • 10 Geometry constant for Lubrication Life Adjustment Factor a3l.