The H7005C-2RZ HQ1 is a high-performance hybrid angular contact ball bearing engineered for precision industrial applications requiring extreme rotational speeds and thermal stability. By combining high-carbon chrome steel rings with aerospace-grade Silicon Nitride (Si3N4) ceramic balls, this bearing achieves a grease-lubricated limiting speed of 55,000 RPM. The 25mm bore and 47mm outside diameter make it the industry standard for high-frequency CNC spindles, precision robotics, and high-performance electric motors. Ceramic balls are 58% lighter than steel, significantly reducing centrifugal forces and friction-induced heat at high velocities. Certified to P4/HQ1 precision standards, this 70-gram bearing offers exceptional wear resistance and electrical insulation, ensuring long-lasting reliability in demanding machining environments.
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