Permissible speed

Insert bearings should not operate at speeds above the limiting speed listed in the product table. This speed limit is set by the seal design. 

For insert bearings with grub screws or an eccentric locking collar, the permissible speed is also influenced by the shaft tolerance. Where using these bearings on shafts with tolerances other than h6, compare the speed values listed in the product table with those in table 1. The lower value is the permissible speed.

The permissible speed of insert bearings with 5-lip seals is valid under the following conditions:
  • outer ring temperature ≤ 60 °C (140 °F)
  • ambient temperature ≤ 25 °C (80 °F)
  • very light to moderate loads (P ≤ 0,05 C)
  • cast iron housing
For other conditions, contact SKF.
For applications operating at elevated speeds or where low vibration levels or quiet running is required, SKF recommends the use of either SKF ConCentra insert bearings, insert bearings on an adapter sleeve or insert bearings with a standard inner ring.
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