High-Speed Miniature Router Bits with Precision Ball Bearings

Ultra-smooth 693ZZ/R-830ZZ bearings feature durable plastic retainers for reduced friction, ensuring flawless high-speed rotation in dental grinding and micro-machining.

Hardened steel 3x8x4mm bearings deliver exceptional wear resistance, ideal for prolonged use in CNC routers, engraving tools, and precision rotary equipment.

The compact design enables seamless integration into tight-spaced dental handpieces and industrial micro-drills, minimizing vibration for surgical-level accuracy.

Pre-lubricated for maintenance-free operation, these bearings outperform standard models with 30% higher RPM tolerance in high-torque applications.

Direct OEM replacement for Dremel, Proxxon, and Foredom systems – trusted by dental labs and jewelry makers for detail work requiring sub-millimeter precision.