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
    • Unit of Measure

    Key Dimensions

    Cone Part Number

    		 N/A 3980

    Cup Part Number

    		 N/A 3920

    Outer Spacer Part Number

    		 N/A Y3S-3920

    Bore (d)

    		 N/A 2.3750 in60.325 mm

    O.D. (D)

    		 N/A 4.4375 in112.713 mm

    Width (T)

    		 N/A 2.3750 in60.325 mm
    Dynamic Radial Load Rating - 1M Revs (C1)1 N/A 54300 lbf242000 N
    Dynamic Radial Load Rating - 90M Revs (C90) 2 N/A 8090 lbf36000 N
    Dynamic Radial Load Rating 2-Row - 90M Revs (C90-2row)3 N/A 14100 lbf62700 N
    e Factor 4 N/A 0.4
    K Factor 5 N/A 1.45

    Other Dimensions

    Weight

    		 N/A 2.74 Kg6.06 lb

    Width (B)

    		 N/A 2.366 in60.096 mm
    Max Shaft Fillet Radius6 N/A 0.02 in0.500 mm
    Max Housing Fillet Radius7 N/A 0.130 in3.30 mm

    Shaft Backing Shoulder Dia. - Backface (db)

    		 N/A 2.95 in75 mm

    Housing Backing Shoulder Dia. - Frontface (Da)

    		 N/A 4.18 in106.17 mm

    Ratings

    Dynamic Axial Rating - 90M Revs (Ca90)8 N/A 5570 lbf24800 N

    Factors

    Y1 Factor 9 N/A 1.68
    Y2 Factor 10 N/A 2.5
    • 1 Based on 1 x 106 revolutions L10 life, for the ISO life calculation method.
    • 2 Based on 90 x 106 revolutions L10 life, for The Timken Company life calculation method. C90 and Ca90 are radial and thrust values.
    • 3 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.
    • 4 These factors apply for both inch and metric calculations. Consult your Timken representative for instruction on use.
    • 5 These factors apply for both inch and metric calculations. Consult your Timken representative for instruction on use.
    • 6 These maximum fillet radii will be cleared by the bearing corners.
    • 7 These maximum fillet radii will be cleared by the bearing corners.
    • 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.