Precision inner race component for computer cooling fan bearings that rotates with the shaft to enable smooth fan operation.
| Parameter | Typical range | Notes & selection driver |
|---|---|---|
| Width | 2-6 mm | |
| Inner Diameter | 2-8 mm | |
| Outer Diameter | 5-15 mm | |
| Radial Clearance | 0.002-0.015 mm | |
| Surface Roughness | Ra ≤0.2 μm | |
| Concentricity Tolerance | ≤0.003 mm | |
| Raceway Curvature Radius | 51-53% of ball diameter |
Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.
This component is used in the following industrial products
This bearing assembly is a precision mechanical component used in the manufacture of computer cooling fans.
Precision bearing supporting compression rollers in pharmaceutical tablet presses
A mechanical assembly within a furniture hinge that facilitates smooth rotational movement and reduces friction between moving parts.
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The inner race provides the rotating interface between the fan shaft and rolling elements, maintaining precise clearance for smooth rotation while distributing mechanical loads evenly across the bearing assembly.
High hardness (58-65 HRC) prevents deformation under rotational loads, reduces wear from continuous ball/roller contact, and extends bearing lifespan in high-RPM cooling fan applications.
Excessive clearance causes vibration and noise, while insufficient clearance generates heat through friction, both leading to premature bearing failure and reduced fan efficiency.
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