6000 Series Ball Bearings

  Small bearings are widely used in electric motors, fans, power tools, and precision equipment. Yet one problem keeps coming up in real applications: overheating. If you’ve ever touched a running motor housing and felt it hotter than expected, the bearings are often part of the issue. So why do small bearings overheat, and more importantly, how can you prevent it?   ① Excessive Preload or Excessive Interference Fit One of the most common causes is an overly tight fit between the shaft and the bearing. For deep groove ball bearings, overheating is more often caused by excessive interference fit rather than axial preload. • What happens: Too much interference fit reduces internal clearance, sometimes into negative range leading to higher friction and rapid heat generat...