Encyclopedia > Lubricant

  Article Content


A lubricant is a substance introduced between two surfaces to lessen the friction between them. Lubricants have been used since prehistoric times, for example on wheel axles, and see extended use in many industrial applications.

Common lubricants include:

Another way to reduce friction is to use a ball bearing, which at the time of its invention was revolutionary. An air cushion can also be used to reduce friction.

All Wikipedia text is available under the terms of the GNU Free Documentation License

  Search Encyclopedia

Search over one million articles, find something about almost anything!
  Featured Article
East Marion, New York

... spread out with 18.5% under the age of 18, 4.4% from 18 to 24, 20.6% from 25 to 44, 26.3% from 45 to 64, and 30.2% who are 65 years of age or older. The median age is 49 ...

This page was created in 33.1 ms