TIMKEN 778/774D
Double Row TIMKEN 778/774D Inch Tapered Roller Bearing
TIMKEN 778/774D consists of a single-piece (double)
outer ring 774D and two single inner ring 778.
This configuration offers a wide effective bearing spread to support loads created by overturning moments.
TIMKEN 778/774D 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 778/774D Technical Data
| Bearing Part | 778/774D | Bearing type: | Double row tapered roller bearing |
| Brand | TIMKEN | Other | Inch type |
| Inner(Cone) | 778 | Dynamic C1 | 603000N |
| Outer(Cup) | 774D | Factors e | 0.39 |
| Bore (d) | 92.075mm | Factors Y | 1.75 |
| O.D (D) | 180.975mm | Dynamic C90 | 89700N |
| Width(T) | 104.775mm | Dynamic Ca90 | 59200N |
| Dynamic C90(2) | 156000N | Factors K | 1.51 |
| Outer Ring Width(C) | 85.725mm | Factors Y2 | 2.61N |
| Origin | USA | Weight: | 11.73kg |
Timken 778/774D Drawing
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