A customer recently came to me frustrated, saying: "Your 6204 bearing is terrible, my spindle is vibrating like crazy."
I asked for a photo of his setup. It turned out he had installed a deep groove ball bearing on a high-precision spindle dealing with heavy axial loads.
The bearing wasn’t bad at all. The choice was just wrong. It’s like putting a weightlifter in a wrestling match, they are undeniably strong, but in that specific environment, they will lose.
Here is a quick breakdown of why this happens and how to make sure you never make the same costly mistake.
The Analogy: The Weightlifter vs. The Wrestler
To understand the fundamental difference between these two common bearings, think of them like athletes:
Bearing Type
The Analogy
Deep Groove Ball B...
