This is a top - notch 6804 bearing. It features Grade 5 Chromium Steel Balls. These high - precision balls are within 5/1,000,000' round, meeting military - level specifications and perfect for precision equipment. They have an R - 64 hardness, the highest grade available. The 52100 High Carbon Chromium Alloy Races are made through a vacuum de - gassing process, resulting in the purest chromium alloy steel. Hardened to R - 62, they are extremely tough and durable, polished to a mirror finish for ABEC - 5 precision and silent operation. The Graphite/Nylon Ball Retainers offer near - frictionless movement and continuous lubrication. To meet the ABEC 5 Standard, the bearing design passes all tests including high - RPM noise testing, with very tight tolerances for I.D. and O.D., ball roundness, race trueness, and micro - surface finishes. The C - 3 Clearance specification details the internal clearance between the bearing and its race. Our Enduro LLB Type Seals, a Nitrile rubber with a steel insert, are better than the standard 2RS type. Machined with a groove in the inner race, they offer better rotation efficiency and less rolling resistance. With two razor - thin sealing lips in light contact, the outer lip keeps out water and contaminants, while the inner seal retains grease for smooth function and long service intervals.

Using this bearing is straightforward. Just install it in your precision equipment as per the manufacturer's instructions. When handling, make sure your hands are clean to avoid getting dirt or debris on the bearing. Avoid exposing it to extreme temperatures and high - impact forces as this can damage the high - precision components. For maintenance, check the grease levels regularly. If the bearing starts to make unusual noises or the movement becomes rough, it's time to replace the grease. Also, inspect the seals for any signs of wear or damage. If the seals are compromised, water and contaminants can get in, reducing the bearing's lifespan. Keep the bearing in a dry and clean environment when not in use.