Integration of the DB45 gearbox model into the stacking line, considering its application in OPs 118, 120.1/120.2, 130. 1/130.2, 130.3, 140.1/140.2, 155.1, 155.2, 160.1/160.2 and 170. This implementation guarantees operation with two types of gearboxes, which will increase flexibility and improve factory productivity.