Definitions for babbitt metal
This page provides all possible meanings and translations of the word babbitt metal
Random House Webster's College Dictionary
any of various alloys of tin with smaller amounts of antimony and copper, used as an antifriction lining for bearings.
Origin of Babbitt metal:
1870–75; after Isaac Babbitt (1799–1862), U.S. inventor
Babbitt metal, babbitt(noun)
an alloy of tin with some copper and antimony; a lining for bearings that reduces friction
A soft white alloy of variable composition (as a nine parts of tin to one of copper, or of fifty parts of tin to five of antimony and one of copper) used in bearings to diminish friction.
Origin: Named after inventor Isaac Babbitt.
a soft white alloy of variable composition (as a nine parts of tin to one of copper, or of fifty parts of tin to five of antimony and one of copper) used in bearings to diminish friction
Babbitt, also called Babbitt metal or bearing metal, is any of several alloys used for the bearing surface in a plain bearing. The original Babbitt metal was invented in 1839 by Isaac Babbitt in Taunton, Massachusetts, USA. Other formulations were later developed. To deemphasize the term's eponymous character, modern writers often lowercase it. It is preferred over the term "white metal", because the latter term may refer to various bearing alloys, lead- or tin-based alloys, or zinc die-casting metal. Babbitt metal is most commonly used as a thin surface layer in a complex, multi-metal structure, but its original use was as a cast-in-place bulk bearing material. Babbitt metal is characterized by its resistance to galling. Babbitt metal is soft and easily damaged, which suggests that it might be unsuitable for a bearing surface. However, its structure is made up of small hard crystals dispersed in a softer metal, which makes it a metal matrix composite. As the bearing wears, the softer metal erodes somewhat, which creates paths for lubricant between the hard high spots that provide the actual bearing surface. When tin is used as the softer metal, friction causes the tin to melt and function as a lubricant, which protects the bearing from wear when other lubricants are absent.
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