619/3

619/3 is a small single-row deep groove ball bearing. Its core function is to provide low-cost and highly adaptable stable rotational support for various small and medium-sized general equipment and precision small devices. With a 3mm inner diameter, 8mm outer diameter, and a compact size of 3mm, it can easily adapt to assembly scenarios with limited space, balancing both basic load-bearing and high rotational speed requirements. It can be made of compatible materials such as stainless steel, and is paired with a steel plate stamping cage. The structure is simple and the manufacturing cost is controllable. It can withstand radial loads, bear a certain amount of axial loads, and has a certain self-aligning ability. Even if there is a slight inclination relative to the outer hole of the housing, it can still operate normally. This bearing has a low friction coefficient. The reference rotational speed can reach 150,000 r/min, the maximum rotational speed is 95,000 r/min, the basic dynamic load is 0.319 kN, and the static load is 0.09 kN. It can meet the low noise and low maintenance requirements for general working conditions, and is widely applicable to general mechanical equipment such as motors, instruments and meters, household appliances, AC welding machines, cleaning machinery, laboratory mixing equipment, etc. It can also be used in small precision devices such as medical devices and printing equipment. It is a basic rotational support component in the mechanical field that combines practicality and universality.