694, 694Z, 694ZZ, 694RS, 694-2RS Miniature Ball Bearings 4x11x4mm – Compact Deep Groove Bearings for High-Speed Precision & Micro-Mechanical Applications

694, 694Z, 694ZZ, 694RS, 694-2RS Miniature Ball Bearings 4x11x4mm – Compact Deep Groove Bearings for High-Speed Precision & Micro-Mechanical Applications

Ultra-compact 694 series miniature deep groove ball bearings in size 4mm (ID) × 11mm (OD) × 4mm (W), designed for precision instruments and small mechanical systems requiring smooth, quiet, and high-speed rotation under light radial loads. Available in multiple sealing configurations to suit diverse micro-environments:

• 694: Open type – ideal for clean or controlled settings with custom lubrication
• 694Z / 694ZZ (694-2Z): Single or double metal shields – protect against dust while retaining factory grease
• 694RS / 694-2RS: Single or double rubber seals – provide excellent resistance to moisture and fine contaminants

Manufactured from high-grade chrome steel (GCr15) or optional stainless steel, these miniature bearings feature precision-ground raceways for low friction, minimal noise, and reliable performance at high RPMs. Widely used in small DC motors, drones, RC cars/planes, medical devices, robotics, 3D printers, scanners, and office automation equipment.

Most sealed models come pre-lubricated with low-torque, long-life grease for maintenance-free operation. The 694 series supports both radial and limited axial loads, making it a versatile solution for compact, high-efficiency designs where space and weight are critical.

🔧 Key Specifications:

• Models: 694, 694Z, 694ZZ (694-2Z), 694RS, 694-2RS
• Dimensions: 4 × 11 × 4 mm
• Material: Chrome Steel (GCr15) – stainless steel available on request
• Precision Rating: ABEC-1 to ABEC-5 (standard ABEC-1 unless specified)
• Ideal for: Hobby electronics, micro-motors, precision instruments, and smart devices