Hourglass Spacers 1/2in IDx1-1/2in OD x 1-1/2in

The Hourglass Spacers 1/2in IDx1-1/2in OD x 1-1/2in (SKU ALL 18836) are precision-engineered aluminum components designed for mechanical assemblies, drivetrain builds, and custom machinery applications where controlled axial spacing is critical. These spacers serve as load-bearing intermediates between rotating or stationary components, maintaining precise distances while accommodating standard fastener bores. Whether you're assembling performance drivetrains, engine builds, or precision machinery, hourglass-profile spacers distribute radial loads more efficiently than simple cylindrical designs, reducing stress concentration at critical contact points.

Manufactured from aluminum in a natural finish, these spacers provide an ideal balance of strength-to-weight ratio while remaining corrosion-resistant under standard operating conditions. The hourglass geometry—with its characteristic stepped profile—delivers superior load distribution compared to flat spacers, making them suitable for both high-speed and high-torque environments. With a 0.5-inch inner diameter (ID), 1.5-inch outer diameter (OD), and 1.5-inch thickness, they accommodate standard fastener sizes while presenting a wide bearing surface to minimize wear. The aluminum construction ensures straightforward machinability for custom fitting and modification if required by your specific application.

These spacers excel in custom motorcycle builds, off-road vehicle suspension systems, hot-rod engine assemblies, and industrial machinery where universal compatibility and repeatable precision are non-negotiable. Buyers typically purchase them in pairs or multiples depending on axle or shaft configuration requirements. Installation involves standard fastener methods—simply position between mating components and secure with appropriate bolts or studs. The universal design ensures compatibility across most standard shaft and bearing housings, though verification of your bore diameter and load requirements is recommended before ordering for specialized high-performance applications.