Roman Ball Bearings

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Leonardo da Vinci has been credited with the discovery of the principle behind the mechanics of ball bearings.but ball bearings were found on the Roman Nemi ships constructed in about 40 A.D.

A wagon was found in Denmark that was older than the Roman ball bearings, it had an axle with cast bronze roller bearings.

Category
Mechanical Inventions
Tags
Roman Ball Bearings, invention
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