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Design 4 - Rolling contact bearing (Type 3 - Find Life for given Bearing subjected to varying load and speed)
written 4.8 years ago by gravatar for yashbeer yashbeer ★ 11k
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written 4.8 years ago by gravatar for yashbeer yashbeer ★ 11k

A deep groove ball bearing having SKF no.6207 subjected to load cycle as below which is repeated.

Phase Radial load (Fr) Axial load (Fa) N (rpm) Time %
1 3 1 600 15
2 3.5 1 800 20
3 5 0.1 900 30
3 0.5 2 1500 35

Under each phase assume average load with high shocks. Determine the expected life of bearing in hrs with probability of survival 95%.

Given Data

SKF Bearing No. 6207

Type of Bearing- Deep Groove Ball Bearing.

Shock Condition-Heavy Shock for all phase.

Probability of Survival - 95%.

Solution

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