Technical Standards EUWA ES-3.21 High Speed Wheels for Agricultural Tractors ≥50 kph

May 11, 2009

EUWA ES-3.21 High Speed Wheels for Agricultural Tractors ≥50 kph

This EUWA specification provides, for standardised disc wheels and adjustable
wheels for agricultural tractors, radial run out first harmonic high point marking. This
marking is used to match-mounting with tyres on wheels to minimise the assembly
radial force variation.
It has been found that the radial run out has a big influence on the handling of the
tractor. Moreover, the amplitude of the vehicle vibration is proportional to the first
harmonic of the radial run out of the two bead seats.

EUWA ES-3.21 High Speed Wheels for Agricultural Tractors ≥50 kph