Here are a couple emails I exchanged with APT regarding their motor life.
How long are these pumps rated for in continuous use?
http://www.aptinstruments.com/Merchant2/merchant.mv?Screen=PROD&Store_Code=AI&Product_Code=SP300VO&Category_Code=SP300
And are the brushes replaceable? Please let me know.
Thanks
Ian
reply
Hi Ian,
In a 24/7 application these motors would be rated for about 4000-7000 hours depending upon the load of the pump (type of tubing and pressure).
In a 50% duty cycle or less, the life expectancy would be about 50% higher. Heat is the issue that reduces the brush life.
No, these are not replaceable brushes.
I would be happy to review your application and make a recommendation.
Please let me know if you have any further questions.
Regards,
Larry
APT
I said
Thanks Larry,
How about the brushless pumps how long are they rated for? Also does
it depend on what RPM I am running it at?
Thanks
Ian
reply
Hi Ian,
Motor life is not usually greatly effected by motor speed.
It is most effected by continuous operating time (heat buildup).
The BLDC motors are rated for 20,000 hours.
Regards,
Larry
APT