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 12580

    Cup Part Number

    		 N/A 12520

    Outer Spacer Part Number

    		 N/A Y1S-12520

    Bore (d)

    		 N/A 0.8125 in20.638 mm

    O.D. (D)

    		 N/A 1.9380 in49.225 mm

    Width (T)

    		 N/A 1.5626 in39.69 mm
    Dynamic Radial Load Rating - 1M Revs (C1)1 N/A 17100 lbf76000 N
    Dynamic Radial Load Rating - 90M Revs (C90) 2 N/A 2540 lbf11300 N
    Dynamic Radial Load Rating 2-Row - 90M Revs (C90-2row)3 N/A 4430 lbf19700 N
    e Factor 4 N/A 0.32
    K Factor 5 N/A 1.81

    Other Dimensions

    Weight

    		 N/A 14.51 Kg31.96 lb

    Width (B)

    		 N/A 1.5626 in39.69 mm
    Max Shaft Fillet Radius6 N/A 0.01 in0.3 mm
    Max Housing Fillet Radius7 N/A 0.06 in1.52 mm

    Shaft Backing Shoulder Dia. - Backface (db)

    		 N/A 1.12 in28.5 mm

    Housing Backing Shoulder Dia. - Frontface (Da)

    		 N/A 1.81 in45.97 mm

    Ratings

    Dynamic Axial Rating - 90M Revs (Ca90)8 N/A 1410 lbf6260 N

    Factors

    Y1 Factor 9 N/A 2.09
    Y2 Factor 10 N/A 3.11
    • 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.