Silicon nitride balls can take the heat
A
Danaher Motion product story
Edited by the Engineeringtalk editorial team
Mar 22, 2002
Thomson Precision Ball has a new family of balls made from silicon nitride that are ideal for a number of high precision medical and test applications, including dental drills and gauges.
Thomson Precision Ball has a new family of balls made from silicon nitride that are ideal for a number of high precision medical and test applications, including dental drills and gauges.
They are also being used in automotive fuel injection and antilock braking systems, specialty bearings and aerospace actuators.
Guaranteed to meet ISO standards and manufactured in an ISO-9002/QS-9000 plant, this new line of precision ball products conforms to the standards of the American Bearing Manufacturers Association (ANSI/ABMA Std 10-1989).
When compared with steel balls, silicon nitride balls provide equipment and device designers a number of benefits, including: a 40% reduction in weight; up to double the material hardness for tight tolerances; a coefficient of thermal expansion that is 70% less than steel; and an operating temperature range up to 1800F.
In addition, Thomson silicon nitride balls are noncorrosive, antimagnetic and excel in low-noise, high-rigidity and high-load-carrying applications.
Furthermore, these balls can run dry in a vacuum environment and up to 500F without lubrication.
Thomson silicon nitride balls are available from 0.03125 to 1in.
Special sizes can be ordered in lot quantities.
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