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 11.77 Kg25.95 lb

    Width (T)

    		 N/A 4 in101.6 mm

    B - Width

    		 N/A 3.625 in92.076 mm
    Max Shaft Fillet Radius1 N/A 0.060 in1.5 mm
    Max Housing Fillet Radius2 N/A 0.130 in3.30 mm

    Shaft Backing Shoulder Diameter - Backface (db)

    		 N/A 4.92 in125 mm

    Housing Backing Shoulder Diameter - Frontface (Da)

    		 N/A 7.09 in180.09 mm

    Key Dimensions

    Cone Part Number

    		 N/A 90381

    Cup Part Number

    		 N/A 90744

    Related Assembly Number(s)

    		 N/A 90381-90017 90381-90020 90381-90026

    Outer Spacer Part Number

    		 N/A Y2S-90744

    Design Unit

    		 N/A Inch

    Bore (d)

    		 N/A 3.8125 in96.838 mm

    O.D. (D)

    		 N/A 7.4375 in188.913 mm
    Dynamic Radial Load Rating - 90M Revs (C90) 3 N/A 22300 lbf99300 N
    Dynamic Radial Load Rating 2-Row - 90M Revs (C90-2row)4 N/A 38900 lbf173000 N
    K Factor 5 N/A 0.67
    e Factor 6 N/A 0.87

    Ratings

    C1 - Dynamic Radial Rating (1 million revolutions)7 N/A 150000 lbf667000 N
    Ca90 - Dynamic Thrust Rating (90 million revolutions)8 N/A 33100 lbf147000 N

    Factors

    Y1 Factor 9 N/A 0.78
    Y2 Factor 10 N/A 1.16
    • 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.