The locking devices that are applied to connect the rotor shaft and the crushing roll of impact crushers used for the grinding of crushed rock material are for instance exposed to extreme strain in the form of bending torques and radial run-out. In order to avoid negative consequences of these strains on the operational performance and durability of impact crushers, RINGFEDER® has developed a special solution for one of the globally leading manufacturers: The specially designed locking assembly variants, which are based on the RfN 7012 and RfN 7015 series and which are manufactured with high precision are provided with a higher yield strength, a flatter angle of taper and considerably wider pressure rings, thus ensuring the reliable, lower-maintenance function of impact crushers.
Excellent damping and misalignment compensation characteristics, huge torque transmission densities, exceptional robustness even under rough ambient conditions – the torsionally flexible, fail-safe jaw couplings of the RINGFEDER® TNB series have stood the test in demanding mining applications many hundred times over. This also applies to the concrete case of several powerful drives of conveyor belts, used to quickly remove the raw material extracted from an underground mine, where strong heat and the formation of dust as well as very confined spatial conditions are predominant. The premium-quality TNB couplings act as ideal shaft connectors of maximum reliability, stability and service-friendliness in this application.