Tapered Roller Bearings - 2S (Matched Bearing Assembly, with snap ring spacer)
Unit of Measure

Key Dimensions

Cone Part Number

 N/A 392

Cup Part Number

 N/A 394A

Inner Spacer Part Number

 N/A K444667R

Outer Spacer Part Number

 N/A K444668R

Bore (d)

 N/A 2.4375 in61.913 mm

O.D. (D)

 N/A 4.3307 in110.000 mm

Width (T)

 N/A 1.9502 in49.535 mm
Dynamic Radial Load Rating - 1M Revs (C1)1 N/A 38700 lbf172000 N
Dynamic Radial Load Rating - 90M Revs (C90) 2 N/A 5760 lbf25600 N
Dynamic Radial Load Rating 2-Row - 90M Revs (C90-2row)3 N/A 10000 lbf44600 N
e Factor 4 N/A 0.4
K Factor 5 N/A 1.45

Other Dimensions

Weight

 N/A 1.84 Kg4.08 lb

Width (C)

 N/A 1.7002 in43.185 mm

Snap Ring Diameter

 N/A 4.57 in116.10 mm

Snap Ring Width

 N/A 0.22 in5.54 mm
Max Shaft Fillet Radius6 N/A 0.03 in0.800 mm

Shaft Backing Shoulder Dia. - Backface (db)

 N/A 2.76 in70 mm

Housing Backing Shoulder Dia. - Frontface (Da)

 N/A 4.15 in105.40 mm

Ratings

Dynamic Axial Rating - 90M Revs (Ca90)7 N/A 3970 lbf17600 N

Factors

Y1 Factor 8 N/A 1.68
Y2 Factor 9 N/A 2.5
  • 1 Based on 1 x 106 revolutions L10 life, for the ISO life calculation method.
  • 2 Based on 90 x 106 revolutions L10 life, for The Timken Company life calculation method. C90 and Ca90 are radial and thrust values.
  • 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.
  • 4 These factors apply for both inch and metric calculations. Consult your Timken representative for instruction on use.
  • 5 These factors apply for both inch and metric calculations. Consult your Timken representative for instruction on use.
  • 6 These maximum fillet radii will be cleared by the bearing corners.
  • 7 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.
  • 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.