Adapter sleeve direction with axial load
Adapter sleeve direction with axial load
(OP)
Consider a fan shaft supported by two spherical roller bearings on adapter sleeves in split plummer block housings. Motor directly coupled to the shaft. Fixed bearing at motor end, free bearing at fan end. Fan exerts a radial and axial load on the shaft.
Focusing on the adapter sleeve on the fixed bearing which will take the axial load. Does anyone have a preference as to which way around the adapter sleeve should go, i.e. with the lock nut on the fan side of the bearing, or the lock nut on the motor side of the bearing?
My own preference would be for the lock nut to be on the fan side of the bearing. If its on the motor side, then the axial load could push the adapter sleeve further into the bearing causing clearance reduction.
Any thoughts?
Focusing on the adapter sleeve on the fixed bearing which will take the axial load. Does anyone have a preference as to which way around the adapter sleeve should go, i.e. with the lock nut on the fan side of the bearing, or the lock nut on the motor side of the bearing?
My own preference would be for the lock nut to be on the fan side of the bearing. If its on the motor side, then the axial load could push the adapter sleeve further into the bearing causing clearance reduction.
Any thoughts?





RE: Adapter sleeve direction with axial load
I think consideration of ease of installation and removal for maintenance may define the orientation
RE: Adapter sleeve direction with axial load
My feelings on the subject, if the thrust is pushing the bearing further up the taper, or loosening it in the opposite direction, you have more important problems to solve then worrying about which direction the lock nut should be on. If the bearing is properly installed, there should not be any axial movement of the bearing on the adapter sleeve.
RE: Adapter sleeve direction with axial load