Elastomeric shaft coupling. HRCP280 couplings have a Φ280mm external diameter have a 10mm diameter pilot bore and have the possibility of receiving an up to 130mm diameter shaft with boring in the lathe. The HRCP280 is only the one half of the coupling and to complete the coupling you will require another half HRCP280. It is essential that you also have the elastic coupling (black spider) HRCN280. Alternatively to complete a shaft coupling you can use a half HRCI280 or HRCE280 with the corresponding taper bush type 3525 depending on the diameter of the second shaft you possess. Taper bush type 3525 have a standard bore diameter Φ35 Φ38 Φ40 Φ42 Φ45 Φ48 Φ50 Φ55 Φ60 Φ65 Φ70 Φ75 Φ80 Φ85 Φ90mm with keyway. Make sure when you purchase the HRCE or HRCI coupling that you have available the right taper bush type 3525 with the desired bore diameter. HRCE coupling receives the taper bush externally while the HRCI receives it internally (from the elastic coupling side). In case the shaft you want to install the coupling to does not have any standard diameter you can use the HRCP280 coupling type which has only a pilot bore and usually requires boring in the lathe and making a keyway. HRC couplings are essentially general purpose couplings with a flexible element which can accommodate higher degree of misallignment. Parallel misallignment up to 0.5mm . Axial misallignment up to 0.7mm. Because of their superior design HRC series couplings can accomodate larger shafts shich can make them a more economical proposition. Salient features. Economy. The design of the HRC couplings has been optimised so that power capacities are balanced to the appropriate shaft diameters utilising taper lock bush fixing. Resilience. Transient peak loads are reduced by a flexible component deflexion of which is a prime design consideration. Misallignment. Incidental parallel angular and axial displacement of the connected shafts can be accomodated. Installation. quick and easy without special tools only an allen key is required. Maintenance. Virtually eliminated and no lubricant is required. Enviroment. The elastomeric component makes HRC coupling suitable for use in most conditions within a temperature range of -40 up to 100 degrees Celcius. Positive. In the unlikely event of the flexible component being destroyed the drive will be maintained by the interaction of dogs which are integral with the flanges.