Physical Data: Carbon Brushes
for industrial and railway applications
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For dynamic seals, sliding bearings and hot glass contact
Carbon graphites
With Schunk at your side, you can rely on "high-performance materials" - also for carbon graphite. Our international customers benefit not only from our high-quality solutions, but also from our application technology consulting and our product diversity. In the Mechanical Carbon sector, Schunk carbon graphite materials are often used as a reference.
knowledge & competence
What distinguishes our carbon graphite?
We speak of carbon graphites when the bodies are temperature treated at a temperature below 1200°C, i.e. carbonized. After carbonization, there is still no continuous graphite structure; the bodies are of high strength and hardness. For many applications, however, such carbon materials already have the desired properties. These include, for example, high wear resistance, excellent sliding properties, high dimensional stability even under temperature, and an ideal surface finish for the desired application in question. We achieve our material and product diversity through various manufacturing, processing and finishing techniques - we have the right material for every requirement.
Where is our carbon graphite used?
The main area of application for our carbon graphite is in the field of seals - for example, for slide bearings, dynamic seals and shaft seals. Our customers also rely on the exceptional properties of carbon for the manufacture and transport of glass products, e.g. as support blocks or transport pins.
In the segment of electrical motors for household-equipment, like washing machines or vaccum cleaners, Schunk is world market leader with the most modern and most reliable caron brush grades for such application. Extended brush lifetime and excellent radio interference performance are 2 of the main USPs.
FAQ - Frequently asked questions about carbon graphite
What is carbon graphite?
Carbon graphite is an engineered material created by combining amorphous carbon and crystalline graphite. It combines the high mechanical strength of carbon with the excellent tribological properties of graphite and is used in a wide range of industrial applications.
What are the properties of carbon graphite?
Carbon graphite is characterized by high wear resistance, good sliding properties, dimensional stability at elevated temperatures, and low thermal conductivity. It is also chemically resistant and can be individually tailored—for example, through resin or metal impregnation—to meet specific application requirements.
What are the applications of carbon graphite?
Carbon graphite is used across numerous industrial sectors, including:
- Sealing rings and slide bearings for pumps and compressors
- Carbon brushes in electric motors and generators
- Components in the chemical, pharmaceutical, and food industries
- Parts for aerospace, energy, and environmental technology
Its versatile properties make it especially suitable for applications requiring high mechanical load capacity and resistance to extreme operating conditions.
How is carbon graphite manufactured?
The production of carbon graphite involves mixing carbon-based materials with binders, followed by a forming process such as pressing or extrusion. The material is then carbonized at high temperatures to achieve the desired characteristics. Depending on the intended use, additional processing steps such as impregnation or specialized heat treatments can be applied to further optimize material properties.
Advantages
Special properties of our carbon graphite:
- High wear resistance
- Very good sliding properties / lubricating properties
- Tribological properties
- Dimensional stability even under temperature
- Individually adjustable surface properties
- Chemical resistance and therefore no adhesion to glass products
Recommendations: Carbon Brushes
for industrial and railway applications
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Brochure: Rings for Dynamic Seals
Carbon Materials in Dynamic Seals
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