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Requisite minimum load

The correlation between load and service life is less important for applications where there are very light loads. Failure mechanisms other than fatigue often prevail.
To provide satisfactory operation, rolling bearings must always be subjected to a given minimum load. A general “rule of thumb” indicates that minimum loads of 0,01 C should be imposed on ball bearings and 0,02 C on roller bearings. The importance of applying a minimum load increases in applications where there are rapid accelerations or rapid starts and stops, and where speeds exceed 50% of the limiting speeds listed in the product tables (→ Speeds). If minimum load requirements cannot be met, NoWear coated bearings should be considered.
Recommendations for calculating the requisite minimum load for different bearing types are provided in the relevant product sections.
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