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 LL771948

    Cup Part Number

    		 N/A LL771911

    Outer Spacer Part Number

    		 N/A LL771911EA

    Bore (d)

    		 N/A 18.7500 in476.250 mm

    O.D. (D)

    		 N/A 22.2500 in565.150 mm

    Width (T)

    		 N/A 3.2500 in82.550 mm
    Dynamic Radial Load Rating - 1M Revs (C1)1 N/A 184000 lbf817000 N
    Dynamic Radial Load Rating - 90M Revs (C90) 2 N/A 27400 lbf122000 N
    Dynamic Radial Load Rating 2-Row - 90M Revs (C90-2row)3 N/A 47600 lbf212000 N
    e Factor 4 N/A 0.47
    K Factor 5 N/A 1.24

    Other Dimensions

    Weight

    		 N/A 39.55 Kg87.18 lb

    Width (B)

    		 N/A 3.25 in82.55 mm
    Max Shaft Fillet Radius6 N/A 0.06 in1.5 mm
    Max Housing Fillet Radius7 N/A 0.130 in3.30 mm

    Shaft Backing Shoulder Dia. - Backface (db)

    		 N/A 19.49 in495 mm

    Housing Backing Shoulder Dia. - Frontface (Da)

    		 N/A 21.66 in548.90 mm

    Ratings

    Dynamic Axial Rating - 90M Revs (Ca90)8 N/A 22000 lbf97800 N

    Factors

    Y1 Factor 9 N/A 1.44
    Y2 Factor 10 N/A 2.14
    • 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.