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Which of the following are the functions of lubrication in a bearing unit ? 1. To protect the bearing components from corrosion. 2. To absorb heat from the bearing unit. 3. To carry heat away from the bearing unit. Select the correct answer using the code given below

Which of the following are the functions of lubrication in a bearing unit ? 1. To protect the bearing components from corrosion. 2. To absorb heat from the bearing unit. 3. To carry heat away from the bearing unit. Select the correct answer using the code given below Correct Answer 1 and 2 only

Explanation:

In a bearing, lubrication forms a thin oil film on both the rolling surface and sliding surface to prevent metal to-metal contact.

The benefits of lubricating a rolling bearing can be summarized as follows:

(1) Alleviation of friction and wear

(2) Removal of friction heat

(3) Longer bearing life

(4) Rust prevention

(5) Protection against contamination by foreign matter

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