TIMKEN 749A/742D
Double Row TIMKEN 749A/742D Inch Tapered Roller Bearing
TIMKEN 749A/742D consists of a single-piece (double)
outer ring 742D and two single inner ring 749A.
This configuration offers a wide effective bearing spread to support loads created by overturning moments.
TIMKEN 749A/742D can be used at fixed positions or allowed to fl oat in the housing bore to compensate for shaft expansion.
D suffi x has a groove with oil holes for lubrication through the outer ring
CD suffi x now replaces the DC suffi x listed for part numbers in previous publications. Same features as D suffi x, but CD also has groove with oil holes. One lubrication hole is counterbored to accept an anti-rotational pin.
Bearing 749A/742D Technical Data
| Bearing Part | 749A/742D | Bearing type: | Double row tapered roller bearing |
| Brand | TIMKEN | Other | Inch type |
| Inner(Cone) | 749A | Dynamic C1 | 656000N |
| Outer(Cup) | 742D | Factors e | 0.33 |
| Bore (d) | 82.55mm | Factors Y | 2.08 |
| O.D (D) | 155.575mm | Dynamic C90 | 97600N |
| Width(T) | 101.6mm | Dynamic Ca90 | 54400N |
| Dynamic C90(2) | 170000N | Factors K | 1.8 |
| Outer Ring Width(C) | 85.725mm | Factors Y2 | 3.09N |
| Origin | USA | Weight: | 8.1kg |
Timken 749A/742D Drawing
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