Specially for and in close collaboration with a Brazilian manufacturer of industrial gearboxes, RINGFEDER® has developed a special application solution of a special size. The powerful gearbox was to ensure the reliable transmission of highest torques and was furthermore to be dimensioned for a gearbox hollow shaft with a diameter of 900 millimetres. By the specific selection of the production process and raw material, a corresponding special design of the RfN 4181 shrink disc series was implemented – within an extremely short delivery time and at an exceptionally economical price. When the clamping screws are tightened, the front and rear pressure ring contract via the cone. This generates the desired shrinking of the hollow shaft, causing compression on the solid shaft, which ensures a reliable, friction-locked torque transmission between the system shaft and the hollow shaft. The special solution designed by RINGFEDER® is the largest shrink disc currently installed in Brazil.
In addition to compact, economic and installation-friendly RINGFEDER® shrink discs which are typically used for any type of frictional locking device, elastic RINGFEDER® jaw couplings of the GWE, TNM, TNS and TNB series as well as backlash-free metal bellows couplings of the GWB mainly prove to be the perfect products to be used in the field of gearbox technology. They work with high precision and reliability, effectively compensate for misalignments in all directions and are available to customers in various standard and special designs perfectly tailored to the customers’ applications. One brief example: With a jaw coupling of the TNM GTW model including an integrated brake disc, RINGFEDER® implemented the shaft connection of an industrial gearbox used in the mining sector with a fluid coupling that must meet tremendous requirements with regard to its compactness and rotary vibration damping.