Question

nccer 22104 - 12 - basic operational techniques
rotating part used on a piece of heavy equipment rides on ____.
o some form of rail
o a bolt
o a chain
o some form of bearing

Explanation:

Bearings are used to reduce friction and support rotating parts in machinery. Rails are for linear - motion, bolts are for fastening, and chains are for power - transmission in some cases. A rotating part in heavy equipment rides on a bearing to rotate smoothly.

Answer:

D. some form of bearing