685ZZ Ball Bearing

The 685ZZ is a miniature deep groove ball bearing equipped with metal shields on both sides (ZZ) to protect the internal rolling elements from dust and light contaminants. The non-contact shields ensure minimal friction while enabling high-speed performance. Its dimensions are 5mm (inner diameter) × 11mm (outer diameter) × 5mm (width), making it ideal for compact applications with light radial load demands.

Typically constructed from high-carbon chromium steel (GCr15), the 685ZZ is durable, wear-resistant, and pre-lubricated with grease, reducing the need for maintenance. It supports radial loads and limited axial loads, making it well-suited for precision devices requiring smooth, reliable rotation in tight spaces.