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Production
Logistic and processing
Importing natural stone from all over the world, we supply it from one central location, our rough block stores in Germany, thus ensuring you short lead times for material procurement.
Our precision work is based on experience, technical innovation and a high degree of motivation.
First we use the latest CBC technology to create precision products from your designs and ideas. Then our optically and electronically assisted instrumentation guarantees achievement of accuracy to <0.001mm that can be reproduced at any time.
Giving shape to stone
At Reitz precision begins right at the start. Proper storage of the stone, time for acclimatisation and expert handling ensure from the outset that the stone is perfectly processed. In most cases, the product is given its shape by surface grinding and sawing. The machines are set, adjusted and checked during the stoneworking process by our highly trained staff. Computer-assisted machines then take over the later stages of the process. We have the capability to machine objects up to a length of 8,000mm and weights of 25,000kg.
Measurements and measurements methods
As a result of increasing knowledge of its physical properties, granite is being used even more frequently in precision mechanical constructions. Compared to traditional materials, granite has a range of advantages over metal as a construction material.
- Granite is not stressed and is thus extremely stable.
- It is harder than steel and thus almost totally resistant to wear.
- Its specific mass is lower than that of steel.
- Its mass to stiffness ratio is almost identical to that of cast iron.
Granite’s low thermal expansion coefficient is of great importance for precision construction. It is also used in several areas of application because it is not magnetic or electrically conductive.
The pysical properties of Gabro are:
- Resistance to bending of 12 N/mm²
- Resistance to pressure of 250 N/mm²
- Specific mass of 2.8 Kg/dm³
- Linear expansion coefficient of 5-7,5 x 10
- Resistance to abrasion of 8 cm³ / 50 cm²
- Vickers hardness of 850-900
Inserts or T-slot rails can be used for clamping components or measuring devices and for linking granite parts. The non-rust steel inserts have standard ISO threads.
| Thread- diameter | Insert- diameter (mm) | Insertlength | Minimum thread depth (mm) | Locked torque N/m | Minimum edge distance (mm) |
|---|---|---|---|---|---|
| M20 | 35 | 70 | 30 | 195 | 65 |
| M16 | 30 | 60 | 30 | 175 | 60 |
| M12 | 22 | 50 | 25 | 85 | 40 |
| M10 | 20 | 40 | 20 | 47 | 35 |
| M8 | 20 | 40 | 15 | 25 | 35 |
| M6 | 16 | 40 | 15 | 10 | 20 |
| M5 | 16 | 40 | 15 | 5,3 | 20 |
| M4 | 12 | 30 | 10 | 3,0 | 20 |
The inserts are stuck into the granite using a two-component system. The positioning is accurate to 0.1 mm. The inserts are put in the stone about 1mm under the surface. The forces that the inserts can absorb are highly dependent on how any given load is being applied. The T-slot rails are made of stainless steel and are stuck and screwed into the cavity.
