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 580

    Cup Part Number

    		 N/A 572

    Outer Spacer Part Number

    		 N/A Y4S-572

    Bore (d)

    		 N/A 3 1/4 in82.550 mm

    O.D. (D)

    		 N/A 5.5115 in139.992 mm

    Width (T)

    		 N/A 2.875 in73.025 mm
    Dynamic Radial Load Rating - 1M Revs (C1)1 N/A 80900 lbf360000 N
    Dynamic Radial Load Rating - 90M Revs (C90) 2 N/A 12100 lbf53600 N
    Dynamic Radial Load Rating 2-Row - 90M Revs (C90-2row)3 N/A 21000 lbf93400 N
    e Factor 4 N/A 0.4
    K Factor 5 N/A 1.45

    Other Dimensions

    Weight

    		 N/A 15.48 Kg34.11 lb

    Width (B)

    		 N/A 2.8424 in72.197 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 3.86 in98 mm

    Housing Backing Shoulder Dia. - Frontface (Da)

    		 N/A 5.25 in133.35 mm

    Ratings

    Dynamic Axial Rating - 90M Revs (Ca90)8 N/A 8330 lbf37100 N

    Factors

    Y1 Factor 9 N/A 1.67
    Y2 Factor 10 N/A 2.49
    • 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.