618/8-2Z

The 618/8-2Z deep groove ball bearing is a high-performance bearing designed for precise and miniature scenarios. Its core advantages lie in dual-sided dust protection and high-precision stable operation. The ultra-compact specification (inner diameter 8mm, outer diameter 16mm, width 4mm) is suitable for narrow installation spaces. It is made of 440C stainless steel or GCr15 high-carbon chromium bearing steel (hardness HRC 60-64). It is wear-resistant, corrosion-resistant, and structurally sturdy. The factory pre-installs lithium-based composite lubricating grease (drop point ≥ 195℃) to ensure smooth operation, low friction coefficient, dual-sided pressed dust covers (protection level IP52) that can effectively prevent dust and impurities from entering to extend service life and reduce maintenance frequency. It also has a rated rotational speed of 55,000 r/min for grease lubrication and excellent dynamic and static load-bearing capacity. It operates smoothly and without deviation at high speeds. It is widely used in industries with strict requirements for protection, precision, and space, such as precision instruments, medical devices, consumer electronics, and micro motors. It is compatible with ISO standards and can be directly replaced with the same model of international brands. It is originally produced in China and has 118 pieces in stock. It supports 48-hour rapid delivery and offers two packaging options: industrial packaging and commercial independent packaging.