This standard covers the rotation diameter, rotation radius, outermost rotation diameter of the machine, innermost and outermost rotation diameter of the tires, which are drawn when a wheeled earthmoving machine rotates on a flat road surface with equipment and attachments installed. The method for determining the This standard applies to all steerable wheeled earthmoving machines, regardless of the type of steering gear used.
JIS A 8303:1998 history
1998JIS A 8303:1998 Earth-moving machinery -- Determination of turning dimensions of wheeled machines
1987JIS A 8303:1987 Measurement of turning dimensions of wheeled construction machinery