In the field of machine mountings for machines with a rotational speed of > 500 rpm and a load range > 1.000 kg per machine feet RG+ offers a wide range of spring isolators with a natural frequency of 3-5 or 4-6 Hz. Due to the integrated all-metal-cushion there is a damping component included in the system. This enables the machine to run through resonance in a calm way. Application for spring isolators can be found in the mechanical and apparatus engineering or the power engineering.