Made from graphite and metal, a carbon bush bearing is used in manufacturing processes, handling large loads, and in other work that requires rotating parts. There are a few stark differences between bronze bushings and steel ball bearings. Bronze bushings will have way more friction and won’t spin as long.
Steel ball bearings can deal with small misalignments and heavy loads much better. A dual ball bearing hub is composed of two ball bearings that are perfectly lined up and compact, made obviously of two ball bearings instead of just one. This means it can keep on spinning for a longer time with less friction. Conversely, a single ball bearing will not handle weight as well and will not spin as long. Out of the three, a dual-ball bearing hub is the most efficient and has the least amount of friction. This means it will spin the longest when under the same weight as the single ball bearing or bronze bushings.
These are types of bearings that minimize friction, restrict motion, and support the loads that are put on the shaft. Bearings help us to deal with friction and the heat that is produced. This video talks about three different types of bearings that use bronze bushings and steel ball bearings.