wheel end bearings 
endurance/durability testing

DID YOU KNOW: ADVICE FOR THE PROFESSIONAL

OVERVIEW

The highest load supported by a wheel end bearing, occurs while the vehicle is cornering, since part of the vehicle weight is shifted to the wheels opposite to cornering direction, dramatically increasing axial and radial forces at that location. In partnership with IAMT*, MOOG has simulated forces faced by a wheel end bearing fitted to a vehicle driving at a constant speed of 80km/h on a circular track of 120m and 80m of radius, allowing it to reach respectively an acceleration of 0,4g and 0,6g. (1)

(2) Both axial and radial loads (Fy and Fz) are calculated for each tested vehicle (based on its weight, speed and track radius, ...) and replicated (3) on the testing bench, at the exact location where they are initiated (i.e. at the point of contact between the tire and the road, meaning that wheel radius (Rdyn) and rim offset (Et) are also taken on board in the simulatuion). 

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*Data provided in conjuction with IAMT Engineering, a globally recognised chassis systems testing and development organisation.