Helicopter down outside Leicester City Football Club

[nodrama]

OAP - you may be correct? It is still possible to relate this sentence ......

"The inner or outer ring faces have been ground to a precise dimension known as the preload offset. This offset corresponds to the rings axial movement when a specific axial preload is applied. When the bearings are clamped together at assembly the offset faces abut, establishing a permanent, rigid preload in the bearing set." ...

..... to the image I posted at #1105 to understand how torquing the nut effects the Duplex bearing.

And maybe this sentence.....

"Duplex bearings are matched pairs of bearings with “built-in” preload"

......should finish "built-in preload offset".