618/7-Z

The 618/7-Z deep groove ball bearing is a high-performance bearing specifically designed for precision miniature applications. Its core advantages lie in single-sided dust protection and high-precision stable operation. The ultra-compact specification can easily fit into 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 strong. The factory pre-installs lithium-based composite lubricating grease (drop point ≥ 195℃) to ensure smooth operation, low friction coefficient, single-sided pressed dust cover (protection level IP52) that can effectively prevent dust and impurities from entering to extend service life, and at the same time has a rated rotational speed of 60,000 r/min for grease lubrication and excellent dynamic and static load-bearing capacity. During high-speed operation, it is smooth without deviation. It is widely used in precision instruments, medical devices, consumer electronics, micro motors, etc., which have strict requirements for protection, precision and space. 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 options: industrial packaging and commercial independent packaging.