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 34301

    Cup Part Number

    		 N/A 34478

    Outer Spacer Part Number

    		 N/A Y4S-34478

    Bore (d)

    		 N/A 3 in76.2 mm

    O.D. (D)

    		 N/A 4.7812 in121.442 mm

    Width (T)

    		 N/A 1.9376 in49.215 mm
    Dynamic Radial Load Rating - 1M Revs (C1)1 N/A 40000 lbf178000 N
    Dynamic Radial Load Rating - 90M Revs (C90) 2 N/A 5960 lbf26500 N
    Dynamic Radial Load Rating 2-Row - 90M Revs (C90-2row)3 N/A 10400 lbf46100 N
    e Factor 4 N/A 0.45
    K Factor 5 N/A 1.3

    Other Dimensions

    Weight

    		 N/A 2.02 Kg4.47 lb

    Width (B)

    		 N/A 1.812 in46.024 mm
    Max Shaft Fillet Radius6 N/A 0.02 in0.500 mm
    Max Housing Fillet Radius7 N/A 0.08 in2.03 mm

    Shaft Backing Shoulder Dia. - Backface (db)

    		 N/A 3.5 in89 mm

    Housing Backing Shoulder Dia. - Frontface (Da)

    		 N/A 4.6 in116.1 mm

    Ratings

    Dynamic Axial Rating - 90M Revs (Ca90)8 N/A 4600 lbf20500 N

    Factors

    Y1 Factor 9 N/A 1.5
    Y2 Factor 10 N/A 2.23
    • 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.