2TS-DM assemblies are comprised of two single-row bearings with abutting back facing inner rings and an outer ring spacer with lubricating holes is typical. These are generally used at fixed positions on rotating shaft applications.

Design Attributes:
  • Two single row bearings, with or without a spacer
  • When spacers are used, bearing is furnished as a preset, matched assembly
  • Spacers available with or without lubricant grooves and holes
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    Unit of Measure

    Other Dimensions

    Weight

    		 N/A 5.54 Kg12.22 lb

    Width (T)

    		 N/A 2.375 in60.325 mm

    B - Width

    		 N/A 2.344 in59.538 mm
    Max Shaft Fillet Radius1 N/A 0.01 in0.30 mm
    Max Housing Fillet Radius2 N/A 0.130 in3.30 mm

    Shaft Backing Shoulder Diameter - Backface (db)

    		 N/A 3.98 in101 mm

    Housing Backing Shoulder Diameter - Frontface (Da)

    		 N/A 5.16 in131.06 mm

    Key Dimensions

    Cone Part Number

    		 N/A 497

    Cup Part Number

    		 N/A 493

    Related Assembly Number(s)

    		 N/A 497-90219 497-902A7 497-902B1 497-90307 497-90323

    Outer Spacer Part Number

    		 N/A Y4S-493

    Design Unit

    		 N/A Inch

    Bore (d)

    		 N/A 3.3750 in85.725 mm

    O.D. (D)

    		 N/A 5.3750 in136.525 mm
    Dynamic Radial Load Rating - 90M Revs (C90) 3 N/A 9000 lbf40000 N
    Dynamic Radial Load Rating 2-Row - 90M Revs (C90-2row)4 N/A 15700 lbf69700 N
    K Factor 5 N/A 1.31
    e Factor 6 N/A 0.44

    Ratings

    C1 - Dynamic Radial Rating (1 million revolutions)7 N/A 60500 lbf269000 N
    Ca90 - Dynamic Thrust Rating (90 million revolutions)8 N/A 6850 lbf30500 N

    Factors

    Y1 Factor 9 N/A 1.52
    Y2 Factor 10 N/A 2.26
    • 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 Based on 90 x 106 revolutions L10 life, for The Timken Company life calculation method. C90 and Ca90 are radial and thrust values.
    • 4 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.
    • 5 These factors apply for both inch and metric calculations. Consult your Timken representative for instruction on use.
    • 6 These factors apply for both inch and metric calculations. Consult your Timken representative for instruction on use.
    • 7 Based on 1 x 106 revolutions L10 life, for the ISO life calculation method.
    • 8 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.
    • 9 These factors apply for both inch and metric calculations. Consult your Timken representative for instruction on use.
    • 10 These factors apply for both inch and metric calculations. Consult your Timken representative for instruction on use.