Coupling description The POLY-NORM® coupling is a torsionally flexible, shear type shaft coupling. It has an axial plug-in design with a unique short over all length. The POLY-NORM® can be used in nearly all types of machinery and is ideal for the pump industry. The POLY-NORM® coupling compensates for shaft misalignment of all kinds and safely transmits the torque. KTR-STOP® Brake Systems For several years KTR have successfully distributed brakes in many countries throughout the world. Now we have combined this know-how about brakes with our experience, gained over decades, in drive technology which we are actually investigating in detail now. During a careful stop-and-go analysis our brakes were examined “disc by disc”. The materials were optimised, the processing was brought to perfection, the dimensions were reduced. Potential weak points were systematically eliminated, trengths of the product were consistently extended. The result is one of the most efficient and resistant brake systems you will find in the market at the moment. In other words: We have re-invented the brake! Function The coupling consists of two hubs, with fingers separated by elastomeric elements. The hubs are assembled blindly plugging the hub fingers into each other axially and the elastomer ring is trapped in a groove between both coupling hubs. The compact POLY-NORM® coupling transmits torque with the elastomer in compression. Shaft misalignments, vibrations and shock loads are effectively absorbed by the POLYNORM ®. The coupling is maintenance-free and used in general machinery, the pump industry and in compressors. Torques of up to 26,800 Nm are stocked in 17 different sizes and 7 designs. In addition to the standard coupling models, flange drop out center and spacer options are available in many variations. Explosion protection use POLY-NORM® couplings are suitable for the use in drives in hazardous areas. The couplings are certified according to EC Standard 94/9/EC (ATEX 95) and belong to category 2G/2D, are confirmed and thus suitable for the use in hazardous areas of zone 1, 2, 21 and 22. Please read our information in the respective Type Examination Certificate and the operating and mounting instructions under www.ktr.com. Variaition of options The coupling can be adapted to many applications due to the many options that are possible with the building block arrangement. The POLY-NORM® components of a given model can be mixed and matched with each other to obtain different shaft distances using the same basic component. On request, we can provide customized variations of the POLY-NORM® to fit your needs – for example, our POLY-NORM® overload coupling with RUFLEX® torque limiter. Just ask us!