Residual Magnetism - How much is too much?
Residual Magnetism - How much is too much?
(OP)
I've seen electrical discharges cause problems in ball/roller bearings, and I've seen damaged turbine babbitt bearings from electrical discharge, and I understand how this can happen.
Is magnetism any way associated with this phenomena?
What is the failure mode when the bearing housing is too magnetized? And how much is too much?
Is magnetism any way associated with this phenomena?
What is the failure mode when the bearing housing is too magnetized? And how much is too much?





RE: Residual Magnetism - How much is too much?
Damage from Electrical Discharge can ruin a bearing in less than 2 weeks of continuous operation
RE: Residual Magnetism - How much is too much?
I do remember that I have asked SKF about possible adverse effects of rolling bearings which may be inadverantly magnetized by improper use of induction heaters (many of the bearings I inspect after removal are magnetized). They stated that it had no adverse effect.
=====================================
Eng-tips forums: The best place on the web for engineering discussions.
RE: Residual Magnetism - How much is too much?
-The future's so bright I gotta wear shades!
Please see FAQ731-376 for tips on how to make the best use of the Eng-Tips Forums.
RE: Residual Magnetism - How much is too much?
http://www.sohreturbo.com/articles-tech-info/
-The future's so bright I gotta wear shades!
Please see FAQ731-376 for tips on how to make the best use of the Eng-Tips Forums.
RE: Residual Magnetism - How much is too much?
-The future's so bright I gotta wear shades!
Please see FAQ731-376 for tips on how to make the best use of the Eng-Tips Forums.
RE: Residual Magnetism - How much is too much?
h
(not sure how to make it a link)
I suppose the most important aspect is that the shaft must have some field of its own as well, then the rotational speed of the shaft inside the stationary magnetic field is relevant. I have found several sources say that greater than 3 Gauss can quickly lead to issues. - That's for ball/roller and sleeve bearings.
RE: Residual Magnetism - How much is too much?
Does anyone have a recommendation for a consultant knowledgeable in this area?
RE: Residual Magnetism - How much is too much?
Their website has quite a few interesting pictures.
RE: Residual Magnetism - How much is too much?
htt
RE: Residual Magnetism - How much is too much?
http://www.gaussbusters.com/index.htm