Dutch ceramic linear bearings come to UK
An
Unimatic Engineers product story
Edited by the Engineeringtalk editorial team
Dec 22, 2005
Claimed to be the world's first practical ceramic linear bearings, they are available in the UK from Unimatic Engineers.
Claimed to be the world's first practical ceramic linear bearings, they are available in the UK from Unimatic Engineers.
Features include low weight, long life, corrosion resistance and temperature tolerance.
Developed in the Netherlands by PM Bearings, the ceramic linear bearings are available in various designs and formats.
Options are available for the bearing material, the choice being based on an assessment of the expected operating parameters such as speed, load and temperature.
The most popular materials are silicon nitride, alumina and zirconia, with others, particularly those from the oxide family of ceramics, used when particularly difficult conditions are expected.
Ceramic bearings do not require lubrication, so simplifying construction and increasing reliability.
Typically a ceramic bearing will outlast a steel bearing by at least 200% in most applications.
Being about half the mass of steel, ceramic bearings are suitable for highly dynamic applications.
They are also about 50% more rigid, so are better able to provide precision position in high speed applications, such as wire bonding for semiconductors.
They are supplied on a custom made-to-order basis with about 10 to 12 weeks lead time.
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