ROC Mineral Cast

ROC - The Brand
ROC History

Mineral cast technology for mounting and clamping devices

Mineral cast is a two-part-system, consisting of mineral particles and an epoxy casting resin as binding material. The main materials in the finished mineral cast are minerals with about 90 weightpercent. The epoxy casting resin consists of liquid resin and curing agent. Mineral cast will be molded, by using a cold-castprocedure at room temperature, into precise negative forms. The minerals will be a combination of different mineral sizes and the liquids, which will be intensively mixed together under a special procedure. After that, the mixture will be cast into the forms under vibration and a homogeneous structure is created. The hardening afterwards is an exothermic process and takes about 12 hours. The cast can then be put out of the forms and the forms can be prepared for the next process.

A relevant advantage of this procedure is that the results are accurate to shape and measure. That’s why machine elements like thread inserts, plates, guidances and tupes for example can be placed exactly into the cast and don’t have to be reworked or finished after the shaping. Another advantage especially for the application and clamping device production are the good vibration damping, the low weight (Tightness 2.3 kg/dm3) of the material and the various design possibilities. Subsuming can be noted that the mineral cast is having lots of advantages for the end customer like efficient use on machine centers (speed, tool wear, finish quality), short procurement time and interesting procurement prices. The specific material properties require an adjusted engineering according to each application. They enable flexible solutions, however, particularly in the fixture construction and therefore contribute to the economical use of the procedure.

Using our ROC Mineral cast technology, high-precision clamping towers, clamping pallets, grid towers, grid pallets as well as customized items are produced.


  • Excellent attenuation-attributes (6-10 times better then Grey iron)
  • Low thermal conductivity, ROC® Mineral cast is reacting very slowly to temperature changes
  • Chemically and mechanically resistant against agressive as well as abrasive medias
  • No corrosion
  • Design independence for creating any forms
  • Possibility to integrate inserts like heavy-anchors, air or hydraulic parts
  • Very little specific weight, lighter then aluminum
  • Pleasant surface, no paintwork necessary
  • About 30% lifetime increase of machining tools

Please note that ROC Mineral cast is having a low tensile- and impact strength, but with a suitable design we improve this characteristics.