The Timken Company
The Timken Company
4500 Mt Pleasant St. NW
N. Canton, OH 44720
Phone: (234) 262-3000
E-Mail: CustomerCAD@timken.com • Web site: www.timken.com
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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

    Other Dimensions

    Weight

    		 N/A 9.22 Kg20.33 lb

    Width (T)

    		 N/A 3.875 in98.425 mm

    B - Width

    		 N/A 3.875 in98.424 mm
    Max Shaft Fillet Radius1 N/A 0.02 in0.50 mm
    Max Housing Fillet Radius2 N/A 0.130 in3.30 mm

    Shaft Backing Shoulder Diameter - Backface (db)

    		 N/A 4.57 in116 mm

    Housing Backing Shoulder Diameter - Frontface (Da)

    		 N/A 6.48 in164.10 mm

    Key Dimensions

    Cone Part Number

    		 N/A HM321245

    Cup Part Number

    		 N/A HM321210

    Related Assembly Number(s)

    		 N/A HM321245-902A1

    Outer Spacer Part Number

    		 N/A HM321210EB

    Design Unit

    		 N/A Inch

    Bore (d)

    		 N/A 3.9060 in99.212 mm

    O.D. (D)

    		 N/A 6.7500 in171.450 mm
    Dynamic Radial Load Rating - 90M Revs (C90) 3 N/A 20100 lbf89600 N
    Dynamic Radial Load Rating 2-Row - 90M Revs (C90-2row)4 N/A 35100 lbf156000 N
    K Factor 5 N/A 1.7
    e Factor 6 N/A 0.34

    Ratings

    C1 - Dynamic Radial Rating (1 million revolutions)7 N/A 135000 lbf602000 N
    Ca90 - Dynamic Thrust Rating (90 million revolutions)8 N/A 11800 lbf52600 N

    Factors

    Y1 Factor 9 N/A 1.97
    Y2 Factor 10 N/A 2.93
    • 1 These maximum fillet radii will be cleared by the bearing corners.
    • 2 These maximum fillet radii will be cleared by the bearing corners.
    • 3 Based on 90 x 106 revolutions L10 life, for The Timken Company life calculation method. C90 and Ca90 are radial and thrust values.
    • 4 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.
    • 5 These factors apply for both inch and metric calculations. Consult your Timken representative for instruction on use.
    • 6 These factors apply for both inch and metric calculations. Consult your Timken representative for instruction on use.
    • 7 Based on 1 x 106 revolutions L10 life, for the ISO life calculation method.
    • 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.