Exam Question
(a) What are the advantages of a thin shell bearing? (4)
(b) What are the typical bearing failures? Discuss at least four bearing failures. (8)
(c) Why is periodic analysis of the lubricating oil important? (4)
Class 4 (4th Engineer)
MEKM
📅 Feb 2026
Reference Answer
### (a) Advantages of a Thin Shell Bearing (4 Marks)
Thin shell bearings, also known as precision insert bearings, offer significant advantages over older, thick-walled, directly-metalled bearings. These advantages are crucial for the reliability and maintainability of modern high-performance diesel engines.
1. **Interchangeability and Ease of Replacement:**
* Thin shell bearings are manufactured to extremely high precision and are pre-finished. This eliminates the need for on-site scraping or hand-fitting.
Thin shell bearings, also known as precision insert bearings, offer significant advantages over older, thick-walled, directly-metalled bearings. These advantages are crucial for the reliability and maintainability of modern high-performance diesel engines.
1. **Interchangeability and Ease of Replacement:**
* Thin shell bearings are manufactured to extremely high precision and are pre-finished. This eliminates the need for on-site scraping or hand-fitting.
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