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The ROLLING BALL MACHINE is a planned and constructed for the calibration of metallic littles ball of diameter comprised between 2 and 12 mm.

The calibration of the littles ball happens thanks to the loading automatic rifle of the same ones by a vibrating tank, automatically affixed inside of interchanging discs with grooves with variable dimension according to the size of the littles ball in order to be collected into a container placed outside of the machine.

This procedure confers to the product one moreover centesimal sphericity concurring to reduce the diameter of the hole of the single ones sferes.