Small diameter bearings (miniature bearings) refer to bearings with metric outer diameters less than 9mm or imperial outer diameters less than 9.525mm, widely used in fields such as micro motors, instruments, computer cooling fans, etc.
1. Common types and models
Metric series: such as 68, 69, 60 series (such as 682ZZ, 603ZZ, 624ZZ, etc.), with a minimum inner diameter of 0.6mm.
Imperial series: such as R series (R2ZZ, R3ZZ, etc.).
Special types: including variants with dust cover (ZZ), rubber seal (RS), flange, etc.
2. Material and Characteristics
Material: Bearing steel, stainless steel, ceramics, etc. Stainless steel material is corrosion-resistant (such as SB603ZZ).
Features: Low friction, high speed, low noise, suitable for precision equipment
