I think Germany?
must not have caught the idea Mr. Ga hvac tech
re-read what you highlighted.
can you spell sarkastick?
Spelling is not my forte.. My posts would be horrible if computers did not clean things up for me.
Originally Posted by 02JeepKing
Agree with the thought...
Your comfort, Your way, Everyday!
back on topic i do believe the bearing theory was correct.
i dug the motor out the scrap bin today and the shaft did have a small bit of play paralell.
i know the shaft normally moves up and down slightly but this one had an odd movement left and right. although slight possibly this was the culprit.
too bad they cant make motors as well as they cook huh Mr. Eugene?
Yeah, it is usually bearing failure, cap failure usually will not lock it up.
was it one of those multi horse motors? I find those only last about a year because getting the right amp draw from the right speed and capacitor combination can be difficult.
Sent from my XT901 using Tapatalk 4
An old thread resurrected, but nobody ever actually answered your question.
When a motor starts the magnetic field induced in the stator tries to pull the rotor to one side, but it can't so it turns, then as the current reverses the rotor continues on chasing its tail. When you get enough lateral play in the bearings (side to side) that rotor is actually pulled into the stator when energized and you end up with a very expensive drum brake. If you were able to manually get that motor spinning fast enough and then energized it the magnetic field would likely hold it centered and it would run.
What causes the bearing failure? Sometimes it could be a fan out of balance, but often anymore it seems to be shotty construction and cheap materials. How often have we all seen a shaft-down motor that is nothing but an oil slick between the motor and the fan blade, and often less than a year old?
Politely: and I respect cjp !
Originally Posted by cjpwalker
but thanks Eugenewith this quoted #7:
What is the cause of bad bearings? Purely mechanical failure, maybe the fan was not balanced?
and in post #4
You're right GT - I skimmed over the thread too fast...
Good advise why over think it.
can u explain sir
Originally Posted by EugeneTheJeep
here i encountered same problem with bush sleeve motor not ball bearing
dirt or abrasives in the enviorment can lead to early failure of bearings. given your location fine sand and dust could be your problem
Originally Posted by kefah