Question
Download Solution PDFBearings are generally made of ______.
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFExplanation:
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 Now it is superseded by Steel.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.
Important Points
- 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.
| Name of the alloy | Made up of |
| Brass | Copper and Zinc |
| Bronze | Copper and Tin |
| Solder | Lead and Tin |
| Stainless steel | Iron, chromium, Nickle, Carbon |
| Gunmetal | Copper, Tin, Zinc, lead |
| German Silver | Copper, Zinc, and Nickle |
| Nickel Steel | Iron and Nickel |
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