When sourcing bearings like the popular 6312 series, one of the most common technical questions we receive at Welink Bearing is: "Should I choose CN (Normal) or C3 clearance?"
There is a common misconception among buyers that "C3" implies a higher precision grade or a "better" bearing. In reality, clearance has nothing to do with manufacturing quality; it’s all about fitting the bearing to its specific working environment. Choosing the wrong clearance can lead to premature failure, excessive noise, and unnecessary downtime.
What is Bearing Internal Clearance?
In simple terms, Bearing Internal Clearance is the total distance that one bearing ring can be moved relative to the other, either radially (Radial Clearance) or axially (Axial Clearance).
&n...
