Insulated bearings
Insulated bearings
(OP)
We are analyzing a bearing failure on VFD driven PM motor. Motor MFG uses DE and NDE insulated bearings (brand AKN, Germany) and DE ground brush. These bearings have the outer ring surface coating (medium grey color). This seems to be either ceramic or aluminum oxide insulating provision. Question for the community: for this kind of bearing, is there any quantification of its insulating properties (e.g. insulation resistance shall be not less then xxx )?





RE: Insulated bearings
IE4 motors are worse off than the less efficient types.
Gunnar Englund
www.gke.org
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Half full - Half empty? I don't mind. It's what in it that counts.
RE: Insulated bearings
RE: Insulated bearings