2TS-IM assemblies are comprised of two single-row bearings with an inner and outer ring spacer. In some applications, a shoulder in the bearing housing replaces the outer ring spacer.

Design Attributes
  • Stainless steel ball bearing inserts with set screw
  • Steel spacers are used to create Bench End Play (BEP) or Preload (BPL) in the bearing assembly
  • Available with or without spacers
  • Spacers preset during manufacture
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Unit of Measure

Other Dimensions

Weight

 N/A 17.11 Kg37.69 lb

Width (T)

 N/A 5.4360 in138.074 mm

C - Width

 N/A 4.5610 in115.849 mm
Max Shaft Fillet Radius1 N/A 0.14 in3.600 mm
Max Housing Fillet Radius2 N/A 0.030 in0.8 mm

Shaft Backing Shoulder Diameter - Backface (db)

 N/A 9.17 in233 mm

Housing Backing Shoulder Diameter - Frontface (Da)

 N/A 11.02 in278.90 mm

Key Dimensions

Cone Part Number

 N/A LM742749

Cup Part Number

 N/A LM742710

Related Assembly Number(s)

 N/A LM742749-90082 LM742749-94082

Inner Spacer Part Number

 N/A LM742749XE

Design Unit

 N/A Inch

Bore (d)

 N/A 8.5000 in215.900 mm

O.D. (D)

 N/A 11.2500 in285.750 mm
Dynamic Radial Load Rating - 90M Revs (C90) 3 N/A 25000 lbf111000 N
Dynamic Radial Load Rating 2-Row - 90M Revs (C90-2row)4 N/A 43600 lbf194000 N
K Factor 5 N/A 1.21
e Factor 6 N/A 0.48

Ratings

C1 - Dynamic Radial Rating (1 million revolutions)7 N/A 168000 lbf748000 N
Ca90 - Dynamic Thrust Rating (90 million revolutions)8 N/A 20600 lbf91800 N

Factors

Y1 Factor 9 N/A 1.4
Y2 Factor 10 N/A 2.09
  • 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.