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 LL382100

Cone Part Number

 N/A LL382149

Cup Part Number

 N/A LL382110

Design Unit

 N/A Inch

Cage Material

 N/A Stamped Steel

Related Assembly Number(s)

 N/A LL382149-90013

Dimensions

d - Bore

 N/A 27.5000 in698.5 mm

D - Cup Outer Diameter

 N/A 32.2500 in819.150 mm

B - Cone Width

 N/A 2.5 in63.5 mm

C - Cup Width

 N/A 2.0000 in50.800 mm

T - Bearing Width

 N/A 2.5000 in63.500 mm

Abutment and Fillet Dimensions

R - Cone Backface "To Clear" Radius1 N/A 0.13 in3.300 mm
r - Cup Backface "To Clear" Radius2 N/A 0.130 in3.30 mm

da - Cone Frontface Backing Diameter

 N/A 28.23 in717 mm

db - Cone Backface Backing Diameter

 N/A 28.35 in720 mm

Da - Cup Frontface Backing Diameter

 N/A 31.65 in803.91 mm

Db - Cup Backface Backing Diameter

 N/A 31.18 in791.97 mm

Ab - Cage-Cone Frontface Clearance

 N/A 0.03 in0.8 mm

Aa - Cage-Cone Backface Clearance

 N/A 0.21 in5.3 mm
a - Effective Center Location3 N/A 2.15 in54.6 mm

Basic Load Ratings

C90 - Dynamic Radial Rating (90 million revolutions)4 N/A 61500 lbf273000 N
C1 - Dynamic Radial Rating (1 million revolutions)5 N/A 237000 lbf1050000 N

C0 - Static Radial Rating

 N/A 716000 lbf3190000 N
Ca90 - Dynamic Thrust Rating (90 million revolutions)6 N/A 36800 lbf164000 N

Factors

K - Factor7 N/A 1.67
e - ISO Factor8 N/A 0.35
Y - ISO Factor9 N/A 1.72

G1 - Heat Generation Factor (Roller-Raceway)

 N/A 9940

G2 - Heat Generation Factor (Rib-Roller End)

 N/A 2090.8
Cg - Geometry Factor10 N/A 0.274
  • 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.