TIMKEN 78250/78549D
Double Row TIMKEN 78250/78549D Inch Tapered Roller Bearing
TIMKEN 78250/78549D consists of a single-piece (double)
outer ring 78549D and two single inner ring 78250.
This configuration offers a wide effective bearing spread to support loads created by overturning moments.
TIMKEN 78250/78549D 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 78250/78549D Technical Data
| Bearing Part | 78250/78549D | Bearing type: | Double row tapered roller bearing |
| Brand | TIMKEN | Other | Inch type |
| Inner(Cone) | 78250 | Dynamic C1 | 353000N |
| Outer(Cup) | 78549D | Factors e | 0.87 |
| Bore (d) | 63.5mm | Factors Y | 0.78 |
| O.D (D) | 139.7mm | Dynamic C90 | 52600N |
| Width(T) | 77.788mm | Dynamic Ca90 | 77900N |
| Dynamic C90(2) | 91500N | Factors K | 0.67 |
| Outer Ring Width(C) | 51.803mm | Factors Y2 | 1.16N |
| Origin | USA | Weight: | 5.1kg |
Timken 78250/78549D Drawing
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