Ball bearings is a device which consists of a ring of small metal balls
It reduces friction between the surfaces its rolling on
It works like
What are ball bearings?
Last updated at June 4, 2020 by Teachoo
About the Author
CA Maninder Singh
CA Maninder Singh is a Chartered Accountant for the past 11 years and a teacher from the past 11 years. He teaches Science, Accounts and English at Teachoo