How to Improve Bearing Lifetime in Small Motors?
Apr 08, 2026
If you work with small motors, whether for power tools, household appliances, or medical devices, you’ve probably faced this headache: the motor runs fine for a while, then starts making noise, vibrating, or just stops. Most of the time, the bearing is the first to give up.
But here’s the good news: with a few practical steps, you can significantly extend bearing life in small motors. And we’ve learned these lessons the hard way, through years of making deep groove ball bearings at Welink Bearing. And we are going to share what actually works.
❶ Start with the right fit.
Small motors have tight internal clearances. If the bearing is too loose, it vibrates. Too tight, it overheats. For most small motors (like those in fans, pumps, or han...