Heidelberg 42.431.302 Rotary numbering box LEI 302-420S

The rotary numbering box LEI 302-420S, also known as a numbering head, counter, or positioning unit, is a precise component for numbering machines in printing technology, manufactured by Heidelberg. It bears the OEM part number 42.431.302. It has the dimensions 10 x 10 x 10 cm and weighs 0.35 kg. This component is used for the precise adjustment of the rotation angle for the forward numbering sequence to ensure accurate positioning of the digits on the print sheet. Typical applications include printing companies for continuous numbering of documents, forms, or tickets, as well as in the production of security prints and the personalization of printed materials. This spare part is compatible with machines such as 'Heidelberg QM 46', 'Heidelberg SM 52', 'Heidelberg GTO 46', and 'Heidelberg GTO 52'.