619/9-2Z

The 619/9-2Z is a compact deep groove ball bearing with a single row and double-sided dust covers. Its core function is to provide high-speed, bidirectional sealing protection and low maintenance rotational support for space-constrained medium-sized precision equipment and complex working conditions such as high dust and high humidity. With an inner diameter of 9mm, an outer diameter of 20mm, and a width of 6mm, it offers precise and compact dimensions and a cylindrical hole design, precisely adapting to installation scenarios with limited space and the need for complete barrier against dust, water vapor, and tiny impurities from both sides. The core components are made of high-carbon chromium bearing steel (GCr15), with a hardness of 60-64 HRC. It is equipped with a steel plate stamping cage and 2Z-type double-sided stamping dust covers, featuring high wear resistance, high rigidity, and comprehensive sealing protection performance. It can stably withstand radial loads and small bidirectional axial loads, and can firmly lock in the pre-filled special low-viscosity lithium-based lubricating grease through the double-sided dust covers to prevent lubricating medium leakage and external contaminants from entering the raceway, significantly extending the maintenance-free period and service life. Its basic rated dynamic load is approximately 2.34kN, the basic rated static load is approximately 0.98kN, the reference rotational speed can reach 75000r/min, the maximum rotational speed is 48000r/min. After precision grinding of the raceway, the running noise and vibration are extremely low, suitable for high-speed stable operation under light to medium loads, widely used in general mechanical manufacturing, micro motors, precision instruments and meters, small pumps and valves, automation equipment, electronic components, medical device accessories (medical handheld devices, etc.), smart home, automotive micro-components, laboratory equipment, high-end toy manufacturing, communication equipment accessories, small detection instruments, machine tool auxiliary structures, welding equipment (AC welders), cleaning equipment, binding equipment, servo mechanisms, flow measurement equipment, etc., providing a comprehensive protective, economical, and long-term stable core support solution for medium-sized rotating structures in various fields.