Bearings are generally made of ______.

SOLUTION

Explanation:

Gunmetal

• Gunmetal is typically composed of 86% copper, 9.5% tin, 2.5% lead, and 2% zinc.
• It was used mainly for making guns and bullets. Now it is superseded by Steel.
• It is generally used in the manufacture of bearings for machine construction, and for this purpose must be capable of resisting hard wear, must be easy to turn, file, and work, and must possess great strength.
• Gunmetal is used extensively for making heavy machinery parts as it can withstand high pressure and is corrosion resistant.

• The chrome steel is used for balls, rollers and races for bearings.
• An alloy is a substance made by melting two or more elements together, at least one of the metal.