Avoid costly downtime

When packaging machines break down, it's really expensive. Magnetic couplings from KBK Antriebstechnik reliably protect the systems from overload, preventing unplanned, costly downtime. The couplings are available in different designs and can be customized to fit your exact needs.

Magnetic couplings from KBK operate without contact and are therefore not subject to any wear. The couplings transmit the desired torque constantly and without deviations. Packaging machines with magnetic couplings can also continue to run immediately after the overload has been eliminated – this is not possible with systems with mechanical couplings. Unlike these couplings, magnetic couplings do not cause any abrasion that could impair the operation of packaging systems. The magnetic couplings can be quickly and easily integrated into the application using clamping hubs. The overload torque can be conveniently adjusted via the immersion depth from the inner to the outer rotor.

KBK manufactures both permanent magnet couplings and hysteresis magnet couplings – the two designs differ in their operating principle. Hysteresis magnet couplings disconnect the power transmission smoothly in the event of overload and are therefore very well suited for use in stretch film packaging machines, among other things. In these machines, the film must always be kept under tension, otherwise it will tear. If the machine manufacturer uses hysteresis magnetic couplings, the film tension remains constant. Hysteresis magnetic couplings from KBK are available for torque ranges between 01 and 5 Nm.

KBK hysteresis magnetic couplings are available in many different designs. Variants are available with clamping hub connections on both sides, with laser-etched scales and individually adjustable overload torque, or for applications involving screwing and winding processes.

In contrast to hysteresis magnetic couplings, permanent magnet couplings jerk when an overload occurs. This property is particularly sought after in filling and capping systems for glass bottles: the jerking disconnection of the power transmission ensures that the bottle cap is tightened securely and sealed perfectly. Permanent magnet couplings from KBK can be used for torques between 1.2 Nm and 60 Nm. Both types of magnetic couplings are suitable for speed ranges from 4,000 to 10,000 rpm and are also available in an easy-to-clean stainless steel version. For applications in high-temperature environments, KBK uses special magnets and adhesives on request. If necessary, the coupling specialists also support their customers in the design and calculation of the torque and overload torque.