Prometheus Bearings

These bearings are designed for any gearbox shell that utilizes an 8mm bushing or bearing hole. Before purchasing, verify that your gearbox is specifically machined for 8mm components.

Bearings significantly reduce mechanical friction compared to solid bushings, which allows your gears to spin more freely. This results in a more responsive trigger pull and less strain on your motor, especially in high-speed builds.

Like all mechanical bearings, they perform best when kept clean and lightly lubricated. We recommend using a high-quality, low-viscosity synthetic grease or oil specifically formulated for airsoft internals to ensure longevity.

No, the slim 2.5mm profile is specifically engineered to sit flush within the gearbox shell. This low-profile design prevents the bearings from protruding and interfering with the movement of the selector plate or other internal components.

While these stainless steel bearings are durable, they are best suited for moderate to high-speed setups. If you are building an extremely high-FPS DMR or a heavy-load system, solid steel bushings are often recommended to prevent potential bearing failure under extreme pressure.