This bearing is from the gearing section in the Rolls-Royce & Bentley parts catalogue for models built between 1945-1955.
Rotary bearings hold rotating components such as shafts or axles within mechanical systems, and transfer axial and radial loads from the source of the load to the structure supporting it.
This Prestige Parts bearing is the correct and latest version of the bearing for the 1st motion shaft. This bearing must have a square (not rounded) edge to fully engage with the circlip that secures it. Fitting the incorrect bearing (sold under part number RG5958) is a known cause of gearbox failure, which results when the circlip is allowed to move and remove material from the gearbox housing, as in the picture here.
All our parts branded Prestige Parts have a 3 year warranty.