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Permissible speed

The permissible speed is equivalent to the value of the limiting speed (→ product table).
Higher speeds are possible with modified bearing designs or with additional heat dissipation from the application. For additional information, contact the SKF application engineering service.
SKF recommends oil lubrication for bearings with a ring centred cage (designation suffix MA or PHAS). When these bearings are grease lubricated (→ Lubrication) the ndm value is limited to 250 000 mm/min.

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

For applications exceeding these values, contact the SKF application engineering service.
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