Which of the following materials is NOT used for a bearing?

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ALP CBT 2 Fitter Previous Paper: Held on 23 Jan 2019 Shift 2
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  1. Chrome steel
  2. Bronze
  3. Wood 
  4. Stainless steel 

Answer (Detailed Solution Below)

Option 3 : Wood 
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Detailed Solution

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Explanation:

Bearing Material –

  • It should be of high compressive strength.
  • High endurance strength to avoid failure due to pitting.
  • Ability to yield and adapt its shape to that of the journal.
  • The bearing material should be soft to allow dirt particles to get embedded inlining and avoid further trouble. This property called embeddability.
  • There are four major parts to a standard ball bearing: the outer race, the rolling balls, the inner race, and the cage.
  • Balls, races in case of ball bearings are made up of 52100 chrome steel.

Babbit material most popular, it based upon lead and Tin based alloy.

Other material – Copper-lead alloy, bronze, plastic, rubber, cast iron, Aluminium alloy, etc.

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