antifriction metal
nounUK /ˌæntiˈfrɪkʃən ˈmɛtəl/
US /ˌæntiˈfrɪkʃən ˈmɛtəl/
A special metal that lets parts slide easily without rubbing and getting hot.
The wheels turn smoothly because they are made of antifriction metal.
OTHER MEANINGS
2. A metal alloy used to line bearings so moving parts wear less.
The mechanic replaced the worn bearing with a new antifriction metal lining.
3. Any material added to reduce rubbing between two surfaces.
Engineers chose an antifriction metal to keep the machine running quietly.
4. A tin- or lead-based alloy such as babbitt used in machinery.
The old factory used antifriction metal in its spinning machines.