mg technical ceramics e. K.

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Produkt Comparison


Ceramic balls:

Ceramic balls are our speciality, and here are just some of the advantages they offer over steel:

  • 70 % less thermal expansion
  • 60 % lower density
  • 50 % higher e-module
  • reduced centrifugal force
  • higher power-plant mounting rigidity
  • less friction
  • corrosion resistance
  • thermal-shock resistance
  • higher hardness and resistance
  • resistant to strong pressure
  • electrically isolating
  • unmagnetic
  • considerably longer durability

Special synthetic ball bearings with ceramic balls

Synthetic ball bearings with ceramic balls are produced by means of a special procedure. Customized ball bearings’ fabrication made of special synthetic material with special balls =

  • quality improvement
  • longer durability
  • high dimensional stability
  • big advantage over steel due to specific characteristics such as heat, cold, dampness, bases, acids etc.

Special product solid ceramics ball bearings:

There are only a few providers of solid ceramics ball bearings in the world. Here are some of the outstanding characteristics which set this material apart:

  • heat-resistant (up to 1,000 Grad °C)
  • resistant to acids, water, bases, gas
  • non-corroding, non-magnetic, electrically isolating
  • non-lubricant applicable
  • up to 40% lighter than hybrid or steel bearings
  • multifunctional

Produktvergleich Product Comparison

Selected mechanical and thermal properties

Properties Silicon Nitride Tungston Carbide Steel
Density 3.23 g/cm³ 14.95 g/cm³ 7.8 g/cm³
Hardness ~ 76 HRc ~ 76 HRc ~ 60-67 HRc
Flexural Strength (3 pt. 20°C) 1000 MPa 2600 MPa 2000 MPa (Tractive)
Compressive Strenght > 4000 MPa 6200 MPa 1400 MPa
Young's Modulus 310 GPa 650 GPa 205 GPa
Poisson's Ratio 0.27 0.22 0.29
Fracture Toughness 7 MPa-√m 12 MPa-√m 70 MPa-√m
Thermal Expansion 3.0 x 10-6/°C 5 x 10-6/°C 12.5 x 10-6/°C
Thermal Conductivity 22 W/m-°C 100 W/m-°C 37 W/m-°C
Specific Heat 0.68 J/g-°C 0.34 J/g-°C 0.50 J/g-°C
max. Service Temperature 1000 °C 450 °C 180 °C


mg technical ceramics GmbH & Co. KG

Münterhof 3
49716 Meppen

Telefon: 05931 885485 05931 885485