697, 697Z, 697ZZ, 697RS, 697-2RS Miniature Ball Bearings 7x17x5mm – Compact Deep Groove Bearings for High-Speed Precision & Micro-Mechanical Systems

697, 697Z, 697ZZ, 697RS, 697-2RS Miniature Ball Bearings 7x17x5mm – Compact Deep Groove Bearings for High-Speed Precision & Micro-Mechanical Systems

High-precision 697 series miniature deep groove ball bearings in size 7mm (ID) × 17mm (OD) × 5mm (W), engineered for compact mechanisms and micro-mechanical systems that demand smooth, quiet, and high-speed rotation under light to moderate radial loads. Available in multiple sealing options to suit diverse operating environments:

• 697: Open type – ideal for clean or controlled settings with custom lubrication
• 697Z / 697ZZ (697-2Z): Single or double metal shields – protect against dust while retaining factory grease
• 697RS / 697-2RS: Single or double rubber seals – offer superior resistance to moisture and fine contaminants

Manufactured from high-grade 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, drones, RC vehicles, robotics, medical devices, 3D printers, power tools, scanners, and smart home appliances.

Most sealed variants are pre-lubricated with low-torque, long-life grease for maintenance-free operation. The 697 series supports both radial and limited axial loads, making it an excellent choice for space-constrained, high-efficiency designs where durability and smooth motion are critical.

🔧 Key Specifications:

• Models: 697, 697Z, 697ZZ (697-2Z), 697RS, 697-2RS
• Dimensions: 7 × 17 × 5 mm
• Material: Chrome Steel (GCr15) – stainless steel optional
• Precision Rating: ABEC-1 (standard); higher grades available
• Ideal for: Hobby electronics, micro-motors, automation, IoT devices, and precision instruments