Super User is a question and answer site for computer enthusiasts and power users. Join them; it only takes a minute:

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

In my laptop, the only fan has magnetic bearing. I haven't seen much information about life expectancy of computer fans with magnetic bearing, so I'm asking you how long can I expect it to last?

I know that it should last longer than ball bearing and much longer than sleeve bearing, but I'd like to see some comparison.

share|improve this question
All of my magnetic fans that have died (two) were due to plastic around the center post cracking, causing the post to lean or even break off. – Synetech Mar 5 '11 at 6:48

They do tend to live longer than ball bearing but exact figure is hard to tell. I would say that it should last as your laptop (4-5 years). In theory it could live even longer.

As with standard (ball-bearing) fans it mostly depends on manufacturing quality. Higher quality ball-bearing will outlive (by huge margin) fan that is manufactured poorly (usually noname).

Good thing about magnetic bearing fans is that there isn't many no-name manufacturers.

share|improve this answer

Ball bearing fans are typically rated at 130,000+ hours life, though some as short as 100,000.

If the bearing in your fan truly is superior to a ball bearing fan, it should last longer than 130,000 hours.

share|improve this answer
Well, the only friction comes from air and the bearing itself has no moving components, so I think that it's better than ball bearing. I did look at some magnetic bearing fans, but none have life expectancy information in specifications. – AndrejaKo Aug 23 '10 at 12:54

bear in mind when it comes to fans their life expectancy is largely dependant on what air you put through it, otherwise dust and debris will clog it long before any bearing issues.

share|improve this answer
I do regular maintenance and remove dust and derbies as soon as visible amounts accumulate. +1 for derbies, though. Most dead fans I've seen come died from that cause. – AndrejaKo Aug 23 '10 at 12:57

It will last longer than you will.

share|improve this answer
Any source for that? I spent some time looking and was unable to find any reference to how long magnetic bearing fans can last. – AndrejaKo Aug 23 '10 at 22:59
@Mark Johnson Yes and? More technically minded people there don't know it either or at least didn't when I posted the question. – AndrejaKo Jan 7 '13 at 22:55
@AndrejaKo I thought it fair to point out your other question. Unless some better data turns up, have your heirs report back whether that fan is still running after you're dead so the matter can be resolved. – Mark Johnson Jan 7 '13 at 23:30
@Mark Johnson Don't worry, I've already made arrangements in case something happens. Report will be made. – AndrejaKo Jan 7 '13 at 23:42

You must log in to answer this question.

Not the answer you're looking for? Browse other questions tagged .