Type EK

Product characteristics
• Backlash-free, torsionally stiff servo lamina coupling
• Maintenance-free
• Ambient temperatures up to +200° C possible
• Torques from 2.5 to 300 Nm
• Couplings for automation engineering, power transmission, medical technology
Coupling description
The RADEX®-NC is a line particularly developed for the servo technology. In this coupling a package of torsionally 
rigid steel laminae that are soft in bending ensures a reliable compensation for axial, angular and radial 
shaft displacements. As all-metal coupling - the laminae are made from stainless steel - the RADEX®-NC can even be used 
with high temperatures (up to 200 °C) and under aggressive ambient conditions. The RADEX®-NC is manufactured in 
6 sizes from size 5 to 35 for max. torques of up to 200 Nm.
The hubs are frictionally engaged clamping hubs made from aluminium (size 42 made from steel) and are thus 
backlash-free even in a reversing drive. 
Click on image to enlarge

Additional Information

A typical application of the RADEX®-NC are backlash-free worm gear pairs with low transmissions. The rigidity of the coupling must be converted by reason of the transmission of the gearbox from the drive side to the driven side.
Here the transmission itself has a decisive influence because it is squarely included in the calculation. This converted rigidity is added in line to the gearbox stiffness in order to get the total rigidity. In case of transmissions that are lower than i = 8 we recommend to use the RADEX®-NC due to the loss of rigidity of the total system if 
flexible couplings are used.