Page 59 - Rollingbearings

Storage

A.3 Storage

Storage

Storage time is the period that a bearing can Additional storage-
remain in storage in order to avoid adverse
effects on operational performance of the related factors A.3
bearing. SKF bearings are coated with a
high-quality preservative oil to protect them To avoid deterioration of your bearings while
from corrosion. Long storage times can be in storage, consider these factors:
attained by storing bearings in their original,
unopened and undamaged, packaging. The • Store indoors, in a frost- and condensation-
storage time of bearings also depends on free environment, at a maximum ambient
their storage environment conditions. To temperature of 40 °C (105 °F), avoiding air
maintain the potential operating performance low.
of a bearing, SKF recommends a “irst in, • Store in vibration-free conditions. Vibration
irst out” inventory policy. can cause damage to raceways.
• Store horizontally, preferably, to avoid
damage that could be caused by the
bearing falling over.
Storage time for • Do not open or damage the original
open bearings packaging.

Typical storage times for open (unsealed)
bearings are listed in table 1.

Storage time for Table 1
capped bearings Storage time for open (unsealed) bearings

Storage environment conditions Storage time
Relative air humidity Ambient temperature
Capped bearings (bearings with seals or
shields) should be stored for a maximum of % °C °F years
three years to avoid deterioration of their
grease ill. 65 20 to 25 70 to 75 10
75 20 to 25 70 to 75 5
75 35 to 40 95 to 105 3

Uncontrolled tropical conditions 1) 1

1) Contact SKF for advice on coping with extreme conditions or attaining a longer storage time.

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