699, 699Z, 699ZZ, 699RS, 699-2RS Miniature Ball Bearings 9x20x6mm – Compact Deep Groove Bearings for High-Speed Precision & Micro-Mechanical Systems

699, 699Z, 699ZZ, 699RS, 699-2RS Miniature Ball Bearings 9x20x6mm – Compact Deep Groove Bearings for High-Speed Precision & Micro-Mechanical Systems

High-performance 699 series miniature deep groove ball bearings in size 9mm (ID) × 20mm (OD) × 6mm (W), engineered for compact mechanisms and micro-mechanical systems that require smooth, quiet, and high-speed rotation under light to moderate radial loads. Available in multiple sealing options to suit diverse operating environments:

• 699: Open type – ideal for clean or controlled settings with custom lubrication
• 699Z / 699ZZ (699-2Z): Single or double metal shields – protect against dust while retaining factory grease
• 699RS / 699-2RS: Single or double rubber seals – offer superior resistance to moisture and fine contaminants

Manufactured from premium chrome steel (GCr15) — with stainless steel available on request — these bearings feature precision-ground raceways for low friction, minimal vibration, and reliable performance at elevated speeds. Commonly used in small electric motors, power tools, drones, RC vehicles, robotics, medical instruments, 3D printers, scanners, smart appliances, and industrial automation modules.

Most sealed variants are pre-lubricated with low-torque, long-life grease for maintenance-free operation. The 699 series supports both radial and limited axial loads, making it a robust choice for space-constrained, high-efficiency designs where durability and smooth motion are critical.

🔧 Key Specifications:

• Models: 699, 699Z, 699ZZ (699-2Z), 699RS, 699-2RS
• Dimensions: 9 × 20 × 6 mm
• Material: Chrome Steel (GCr15) – stainless steel optional
• Precision Rating: ABEC-1 (standard); higher grades available
• Ideal for: Hobby electronics, micro-motors, IoT devices, precision instruments, and compact machinery