Question

what should we use to reduce the friction in machinary parts?​

Answer 1

Answer:

Friction can be minimized by using lubricants like oil and grease and by using ball bearing between machine parts

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Hope it helps you!!

:)

Answer 2

Answer:

The use of bearing surfaces that are themselves sacrificial, such as low shear materials, of which lead/copper journal bearings are an example.

Also, we can add lubricants like oil or grease