SHAFT BEARING OPEN 1/2 I.D.

The SHAFT BEARING OPEN 1/2 I.D. by Barnes is a precision oil pump bearing engineered for reliable performance in high-demand automotive lubrication systems. This open-style bearing serves as a critical component in oil pump assemblies, managing radial loads while allowing controlled oil flow through the pump's shaft cavity. Mechanics and engine builders rely on this bearing to maintain proper oil circulation and pressure regulation, making it essential for both stock restorations and modified engine applications where pump reliability directly impacts engine longevity.

Designed with a 1/2-inch inner diameter, this open bearing accommodates standard shaft dimensions found in Barnes oil pump systems and compatible aftermarket platforms. The open design eliminates seal friction while maintaining bearing clearance tolerances that prevent shaft binding—a critical advantage when higher viscosity oils or cold-start conditions would otherwise create drag losses. At just 0.07 lbs with compact dimensions of 1.5 x 0.25 x 1.5 inches, the bearing integrates seamlessly into tight engine compartment layouts without adding complexity or weight. Barnes engineering ensures dimensional consistency and load-bearing capacity across production runs, delivering the durability expected in professional-grade pump assemblies.

This bearing suits restorers working on vintage or classic vehicles equipped with Barnes oil pumps, as well as performance enthusiasts rebuilding or upgrading pump systems for increased flow capacity. Installation requires precise shaft alignment and proper bore seating to avoid premature wear—use a press or bearing driver to avoid damage during assembly. Verify compatibility with your specific pump model and shaft diameter before ordering; this 1/2-inch I.D. bearing is application-specific and not a universal fit. For engine builders and mechanics demanding reliable OEM-equivalent performance, this bearing delivers the precision fit and service life that professional builds demand.