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 17.83 Kg39.29 lb

    Width (T)

    		 N/A 1.8126 in46.04 mm

    B - Width

    		 N/A 1.8328 in46.553 mm
    Max Shaft Fillet Radius1 N/A 0.01 in0.30 mm
    Max Housing Fillet Radius2 N/A 0.030 in0.76 mm

    Shaft Backing Shoulder Diameter - Backface (db)

    		 N/A 2.4 in61 mm

    Housing Backing Shoulder Diameter - Frontface (Da)

    		 N/A 3.66 in92.96 mm

    Key Dimensions

    Cone Part Number

    		 N/A 389A

    Cup Part Number

    		 N/A 382

    Related Assembly Number(s)

    		 N/A 389A-90090

    Outer Spacer Part Number

    		 N/A K84970

    Design Unit

    		 N/A Inch

    Bore (d)

    		 N/A 2.1250 in53.975 mm

    O.D. (D)

    		 N/A 3.8750 in98.425 mm
    Dynamic Radial Load Rating - 90M Revs (C90) 3 N/A 6280 lbf28000 N
    Dynamic Radial Load Rating 2-Row - 90M Revs (C90-2row)4 N/A 10900 lbf48700 N
    K Factor 5 N/A 1.65
    e Factor 6 N/A 0.35

    Ratings

    C1 - Dynamic Radial Rating (1 million revolutions)7 N/A 42200 lbf188000 N
    Ca90 - Dynamic Thrust Rating (90 million revolutions)8 N/A 3810 lbf16900 N

    Factors

    Y1 Factor 9 N/A 1.91
    Y2 Factor 10 N/A 2.84
    • 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.