619/5

619/5, as a small single-row deep groove ball bearing, its core function is to provide reliable rotational support for small equipment with limited space and demanding requirements for rotational accuracy and high rotational speed. With an inner diameter of 5mm, an outer diameter of 13mm, and a compact size of 4mm, it precisely fits the assembly scenarios that have strict installation space requirements and need stable bearing capacity. It is made of high-carbon chromium bearing steel (GCr15) and is equipped with a steel plate stamping cage, featuring a simple structure, low friction coefficient, and convenient installation. It is pre-filled with special low-viscosity lithium-based lubricating grease, enabling low-noise operation. It can withstand both radial loads and small bidirectional axial loads, and is suitable for general working conditions with light to medium loads. Its basic rated dynamic load is approximately 0.85kN, the static load is approximately 0.32kN, the reference rotational speed can reach 110,000r/min, and the maximum rotational speed is 65,000r/min. It is widely used in miniature motors, precision instruments and meters, sensors, portable electronic devices, medical micro-instruments, small optical equipment, miniature pumps and valves, high-end toy core components, automated miniature equipment, and other fields, providing long-term support for small rotating structures that combines stability and economy.