Brushless motor longevity

[BHChieftain]

Hi,
What's the average lifespan (say in run-hours) for a good quality brushless motor running on lipo voltages?

-Chief

[Fluid]

Impossible to quantify in run hours. Depends heavily on voltage in/watts produced, how hot it has gotten, how wet it has been, the average rpm, etc. A BL motor can be rebuilt by replacing the bearings - which would be the most likely parts to wear out. A decent quality BL motor should last a very long time if not abused and if properly cared for. A faulty motor, or one which has been abused or over-spun, not so long.




.

[Littlescreamers]

I have had motors returned for repair that were up to 5 years old and they usually need new bearings. If ran inside spec they will last for a very very long time. I have some people still using the motors I hand made when I started without any troubles. So it is how the motor is treated that will determine the life.

Scott

[Himalaya]

As long as you keep your motor away from over heat and replace worn bearings as needed, they can seemingly work forever.