For many years, we don’t provide any fan with sleeve bearings anymore.  Those ones had a lower noise level than the ball bearings but had a shorter life expectancy. The noise level of the ball bearings has been considerably improved in between and they have replaced the sleeve bearings. The fans part numbers also changed.

If you need to replace a fan with sleeve bearings, we will propose you the equivalent with ball bearings.

Please find below an example:

	Sleeve bearings	Ball bearings
AC standard	125XR2181000	125XR0181000
DC standard	246DS1LP31000	246DS1LP11000