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 3.13 Kg6.91 lb

    Width (T)

    		 N/A 2.375 in60.325 mm

    B - Width

    		 N/A 2.366 in60.096 mm
    Max Shaft Fillet Radius1 N/A 0.02 in0.50 mm
    Max Housing Fillet Radius2 N/A 0.130 in3.30 mm

    Shaft Backing Shoulder Diameter - Backface (db)

    		 N/A 2.68 in68 mm

    Housing Backing Shoulder Diameter - Frontface (Da)

    		 N/A 4.18 in106.17 mm

    Key Dimensions

    Cone Part Number

    		 N/A 3975

    Cup Part Number

    		 N/A 3920

    Related Assembly Number(s)

    		 N/A 3975-90066

    Outer Spacer Part Number

    		 N/A Y4S-3920

    Design Unit

    		 N/A Inch

    Bore (d)

    		 N/A 2 in50.8 mm

    O.D. (D)

    		 N/A 4.4375 in112.713 mm
    Dynamic Radial Load Rating - 90M Revs (C90) 3 N/A 8090 lbf36000 N
    Dynamic Radial Load Rating 2-Row - 90M Revs (C90-2row)4 N/A 14100 lbf62700 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 54300 lbf242000 N
    Ca90 - Dynamic Thrust Rating (90 million revolutions)8 N/A 5570 lbf24800 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.