683, 683Z, 683ZZ, 683RS, 683-2RS Ball Bearings 3x7x3mm – Ultra-Miniature Deep Groove Ball Bearings for High-Speed & Precision Micro Mechanical Systems

683, 683Z, 683ZZ, 683RS, 683-2RS Ball Bearings 3x7x3mm – Ultra-Miniature Deep Groove Ball Bearings for High-Speed & Precision Micro Mechanical Systems

Ultra-compact 683 series miniature deep groove ball bearings in size 3mm (ID) × 7mm (OD) × 3mm (W), engineered for micro-mechanical applications where space is extremely limited and high-speed performance is critical. Available in multiple sealing options to suit diverse operating environments:

• 683: Open type – ideal for clean environments or custom lubrication
• 683Z / 683ZZ (683-2Z): Single or double metal shields – protect against fine dust while retaining lubricant
• 683RS / 683-2RS: Single or double rubber seals – provide excellent resistance to moisture, dirt, and contaminants

Made from high-grade chrome steel (GCr15) or optionally stainless steel (AISI 440C), these micro bearings offer smooth, low-noise rotation with minimal friction. Precision-ground raceways ensure consistent performance under light radial loads. Widely used in miniature motors, dental handpieces, micro drones, smart watches, robotics joints, lab equipment, tiny fans, and precision instrumentation.

Most sealed versions are pre-lubricated with high-quality grease for maintenance-free operation. The 683 series supports both radial and limited axial loads, making it perfect for ultra-compact, high-RPM systems requiring reliability and quietness.

🔧 Key Specifications:

• Models: 683, 683Z, 683ZZ (683-2Z), 683RS, 683-2RS
• Dimensions: 3 × 7 × 3 mm
• Material: Chrome Steel (GCr15)
• Precision Rating: ABEC-1 (ISO P0)
• Ideal for: Micro motors, wearables, medical micro-tools, and precision micro-mechanisms