Despite demanding conditions, they demonstrate capabilities which would previously have been unthinkable and are still incredible to us today.
At the other end of the scale, there are bearings with an outside diameter of 6 metres that weigh more than 15 tonnes. These components are used for huge tunnel boring machines similar to the ones used to build the Channel Tunnel.
These speeds together with absolute precision virtually eliminate vibrations in dental drills. As well as being fascinating from a technical perspective, this should come as a relief to patients, who can rest assured that they will receive safe treatment.
(*1 nanometre is a thousand millionth of a metre).
High-precision bearings also take extreme heat in their stride, operating in computer tomographs at temperatures of +300 to 500 °C and in vacuum tubes with X-rays. By doing so, they help health care professionals to provide modern day comprehensive check-ups.
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