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All Product Types > ENGINEERED BEARINGS > Tapered Roller Bearings > Tapered Roller Bearings - TS (Tapered Single) > Tapered Roller Bearings - TS (Tapered Single) Imperial > Part Number LL205449AA - LL205410  
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Part Number LL205449AA - LL205410, Tapered Roller Bearings - TS (Tapered Single) Imperial


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: Imperial Metric Both

Specifications  · Dimensions  · Abutment and Fillet Dimensions  · Basic Load Ratings  · Factors

Specifications

Series
LL205400

Cone Part Number
LL205449AA

Cup Part Number
LL205410

Design Unit
Inch

Cage Material
Stamped Steel


Dimensions

d - Bore
2 in
50.8 mm

D - Cup Outer Diameter
3.0625 in
77.788 mm

B - Cone Width
0.5000 in
12.700 mm

C - Cup Width
0.3750 in
9.525 mm

T - Bearing Width
0.4999 in
12.697 mm


Abutment and Fillet Dimensions

R - Cone Backface "To Clear" Radius1
0.14 in
3.600 mm

r - Cup Backface "To Clear" Radius2
0.06 in
1.52 mm

da - Cone Frontface Backing Diameter
2.17 in
55 mm

db - Cone Backface Backing Diameter
2.4 in
61 mm

Da - Cup Frontface Backing Diameter
2.94 in
74.68 mm

Db - Cup Backface Backing Diameter
2.8 in
71.12 mm

Ab - Cage-Cone Frontface Clearance
0.09 in
2.3 mm

Aa - Cage-Cone Backface Clearance
0 in
0 mm

a - Effective Center Location3
0 in
0 mm
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.


Basic Load Ratings

C90 - Dynamic Radial Rating (90 million revolutions)1
2180 lbf
9680 N

C1 - Dynamic Radial Rating (1 million revolutions)2
8390 lbf
37300 N

C0 - Static Radial Rating
10600 lbf
47200 N

Ca90 - Dynamic Thrust Rating (90 million revolutions)3
1250 lbf
5570 N
1 Based on 90 x 106 revolutions L10 life, for The Timken Company life calculation method. C90 and Ca90 are radial and thrust values.
2 Based on 1 x 106 revolutions L10 life, for the ISO life calculation method.
3 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.


Factors

K - Factor1
1.74

e - ISO Factor2
0.34

Y - ISO Factor3
1.78

Cg - Geometry Factor4
0.0699
1 These factors apply for both inch and metric calculations. Consult your Timken representative for instruction on use.
2 These factors apply for both inch and metric calculations. Consult your Timken representative for instruction on use.
3 These factors apply for both inch and metric calculations. Consult your Timken representative for instruction on use.
4 Geometry constant for Lubrication Life Adjustment Factor a3l.



 DOWNLOADS 

Tapered Roller Bearing Engineering Information
(PDF, 663KB)

Bearing Life Calculation Tool

Bearing Dimensional Tolerances



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