Actuated manually via a threaded system, greater or lesser axial load is applied to the shaft using a fixed mechanism, a spring, and a felt pad that friction with the moving part of the shaft. This allows precise tension adjustment. Note that for rolls with small diameters (less than 300 mm), brake adjustment generally should not be performed during the process.
Ejematic és especialista en la fabricació d’eixos expansibles neumàtics per a bobines de maquinària de la indústria del packaging, les arts gràfiques, el sector tèxtil i el paperer.