Small diameter ball bearings (also known as micro deep groove ball bearings) are precision mechanical components with an outer diameter of less than 9mm, widely used in high-speed and low-noise scenarios
Size range: metric series outer diameter<9mm, imperial series outer diameter<9.525mm, minimum inner diameter up to 0.6mm.
Material: Common stainless steel (such as 304/440C), bearing steel, ceramics, etc. Some models use PTFE sealing rings.
Structural types: including open type (such as C-SE series), double cover type (such as C-E series), and flanged type (such as C-EFL series)
