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Permissible speed

The limiting speed listed in the product table is a mechanical limit that should not be exceeded unless the bearing design and the application are adapted for higher speeds.
SKF recommends oil lubrication for bearings with a ring centred cage (designation suffix MA or PHAS). When these bearings are grease lubricated the ndm value is limited to 250 000 mm/min.

where
dm bearing mean diameter [mm]
= 0,5 (d + D)
nrotational speed [r/min]
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