Proper storage of SKF bearings is important to assure the best in bearing performance. Inventory control can also play an important role in performance. Bearing storage life is the period that a SKF bearing can remain in storage in order to avoid adverse effects on operational performance of the bearing. SKF bearings are coated with a high-quality preservative oil to protect them from corrosion. Long storage times can attained by storing bearings in their original, unopened and undamaged, packaging. SKF recommends a "first in, first out" inventory policy.
Storage conditions
To maximize the service life of SKF bearings, The following basic housekeeping practices are recommended:
- Store bearings flat, in a vibration-free, dry area with a cool, steady temperature.
- Control and limit the relative humidity of the storage area as follows:
- 75% at 20 °C (68 °F)
- 60% at 22 °C (72 °F)
- 50% at 25 °C (77 °F)
- Keep SKF bearings in their original unopened packages until immediately prior to mounting to prevent the ingress of contaminants and corrosion.
- Bearings that are not stored in their original packaging should be well protected against corrosion and contaminants.
Shelf life of SKF open bearings
SKF bearings are coated with a rust-inhibiting compound and suitably packaged before distribution. For open bearings, the preservative provides protection against corrosion for approximately three years, provided the storage conditions are appropriate.
Shelf life of SKF sealed bearings
The maximum storage interval for sealed SKF bearings is dictated by the lubricant inside the bearings. Lubricant deteriorates over time as a result of ageing, condensation, and separation of the oil and thickener. Therefore, sealed SKF bearings should not be stored for more than three years.