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 1.57 Kg3.47 lb

    Width (T)

    		 N/A 1.9376 in49.215 mm

    B - Width

    		 N/A 1.9376 in49.216 mm
    Max Shaft Fillet Radius1 N/A 0.02 in0.50 mm
    Max Housing Fillet Radius2 N/A 0.030 in0.76 mm

    Shaft Backing Shoulder Diameter - Backface (db)

    		 N/A 2.68 in68 mm

    Housing Backing Shoulder Diameter - Frontface (Da)

    		 N/A 3.66 in92.96 mm

    Key Dimensions

    Cone Part Number

    		 N/A 28680

    Cup Part Number

    		 N/A 28622

    Related Assembly Number(s)

    		 N/A 28680-902A2

    Outer Spacer Part Number

    		 N/A Y4S-28622

    Design Unit

    		 N/A Inch

    Bore (d)

    		 N/A 2.1875 in55.563 mm

    O.D. (D)

    		 N/A 3.8437 in97.630 mm
    Dynamic Radial Load Rating - 90M Revs (C90) 3 N/A 7180 lbf32000 N
    Dynamic Radial Load Rating 2-Row - 90M Revs (C90-2row)4 N/A 12500 lbf55600 N
    K Factor 5 N/A 1.45
    e Factor 6 N/A 0.4

    Ratings

    C1 - Dynamic Radial Rating (1 million revolutions)7 N/A 48200 lbf215000 N
    Ca90 - Dynamic Thrust Rating (90 million revolutions)8 N/A 4950 lbf22000 N

    Factors

    Y1 Factor 9 N/A 1.68
    Y2 Factor 10 N/A 2.5
    • 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.