Ceramic Materials & Their Properties
There are a variety of different ceramic materials each with their own different capabilities, advantages and disadvantages; their use in bearing and rolling element applications was pioneered by many of the space agencies and continues to be at the forefront of engineering technology.
|Linear expansion coefficient||.1×10-6/oC|
|Linear expansion coefficient||10.3×10-6/oC|
|Linear expansion coefficient||3.9×10-6/oC|
|Stainless Steel (440C)|
|Linear expansion coefficient||12.5×10-6/oC|
The most common ceramic materials and their properties are listed to the left along with 440C stainless steel as a comparison to a conventional material.
Components made of ceramic materials have a number of special properties such as being a strong electrical insulators and highly resistant to temperatures opening a wider range of application than was thought possible prior to their utilisation.
Aspects such as lower density gives both a weight saving and an increased life as the centripetal force acting upon the bearing is less therefore reducing the wear on the rolling elements.
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