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 23.51 Kg51.88 lb

    Width (T)

    		 N/A 2 in50.8 mm

    B - Width

    		 N/A 2 in50.8 mm
    Max Shaft Fillet Radius1 N/A 0.01 in0.30 mm
    Max Housing Fillet Radius2 N/A 0.06 in1.52 mm

    Shaft Backing Shoulder Diameter - Backface (db)

    		 N/A 3.54 in90 mm

    Housing Backing Shoulder Diameter - Frontface (Da)

    		 N/A 4.75 in119.90 mm

    Key Dimensions

    Cone Part Number

    		 N/A 27689

    Cup Part Number

    		 N/A 27620

    Related Assembly Number(s)

    		 N/A 27689-90026

    Outer Spacer Part Number

    		 N/A Y2S-27620

    Design Unit

    		 N/A Inch

    Bore (d)

    		 N/A 3.2813 in83.345 mm

    O.D. (D)

    		 N/A 4.9375 in125.413 mm
    Dynamic Radial Load Rating - 90M Revs (C90) 3 N/A 6830 lbf30400 N
    Dynamic Radial Load Rating 2-Row - 90M Revs (C90-2row)4 N/A 11900 lbf52900 N
    K Factor 5 N/A 1.4
    e Factor 6 N/A 0.42

    Ratings

    C1 - Dynamic Radial Rating (1 million revolutions)7 N/A 45900 lbf204000 N
    Ca90 - Dynamic Thrust Rating (90 million revolutions)8 N/A 4860 lbf21600 N

    Factors

    Y1 Factor 9 N/A 1.62
    Y2 Factor 10 N/A 2.42
    • 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.