SKU: AURCOM-12
MPN: COM-12
The Mono Ball Bearing 3/4ID x 1.4375OD (AURORA COM-12) is a precision roller component engineered for high-load automotive and mechanical applications where smooth rotational movement and radial support are critical. Whether you're rebuilding a transmission, servicing a differential, or working on custom suspension geometry, this bearing serves as a foundational element that enables consistent performance under demanding conditions. Ball bearings of this specification are essential in modern vehicle drivetrains, where even minor friction losses compound into drivability issues and accelerated wear.
The 3/4-inch inner diameter (ID) and 1.4375-inch outer diameter (OD) geometry places this mono ball bearing in a mid-range load class ideal for intermediate shaft applications, stub axles, and secondary support points in drive systems. The mono configuration means this bearing features a single raceway design, optimizing radial load handling while maintaining a compact footprint—critical when working within tight OEM or custom fabrication envelopes. At just 0.21 lbs, the bearing's lightweight construction minimizes rotational inertia and heat generation, essential attributes for sustained high-RPM operation and fuel efficiency in performance builds. AURORA's manufacturing heritage ensures consistent material hardness, cage integrity, and tolerance stack-up that translates directly to extended bearing life and reduced maintenance intervals.
Mechanics and fabricators building custom drivelines, upgrading OEM assemblies, or sourcing OEM-equivalent replacements will find this bearing compatible with a wide range of domestic and import platforms where this bore-to-flange specification is standard. Installation requires proper press tooling and cleanliness protocols to prevent contamination—a detail that separates a serviceable bearing installation from one that delivers OEM longevity. When paired with quality seals, appropriate lubrication, and correct assembly torque, the Mono Ball Bearing 3/4ID x 1.4375OD delivers the silent reliability that separates a well-engineered drivetrain from a problematic build.
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