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Relubrication procedures

The relubrication procedure generally depends on the application and on the relubrication interval tf. SKF recommends one of the following procedures:
  • Replenishment is a convenient and preferred procedure if the relubrication interval is shorter than six months. It enables uninterrupted operation and provides, when compared with continuous relubrication, a lower steady state temperature.
  • Renewing the grease fill is generally recommended when the relubrication interval is longer than six months. This procedure is often applied as part of a bearing maintenance schedule.
  • Continuous relubrication is used when the estimated relubrication intervals are short due to the adverse effects of contamination, or when other relubrication methods are inconvenient because access to the bearing is difficult. SKF does not recommend continuous relubrication for applications with high rotational speeds since the intensive churning of the grease can lead to very high operating temperatures and destruction of the grease thickener structure.
When using different bearings in a bearing arrangement, it is common practice to apply the lowest estimated relubrication interval for all bearings in the arrangement. The guidelines and grease quantities for the three alternative procedures are provided in this section.
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