6804, 6804Z, 6804ZZ, 6804RS, 6804-2RS Ball Bearings 20x32x7mm – Ultra-Miniature Deep Groove Ball Bearings for High-Speed & Precision Micro Mechanical Systems

6804, 6804Z, 6804ZZ, 6804RS, 6804-2RS Ball Bearings 20x32x7mm – Ultra-Miniature Deep Groove Ball Bearings for High-Speed & Precision Micro Mechanical Systems

Compact yet high-performance 6804 series deep groove ball bearings in size 20mm (ID) × 32mm (OD) × 7mm (W), designed for precision micro-mechanical systems that demand smooth, quiet, and reliable rotation in limited spaces. Available in multiple sealing options to suit various operating conditions:

• 6804: Open type – ideal for clean environments or custom lubrication
• 6804Z / 6804ZZ (6804-2Z): Single or double metal shields – protect against dust while retaining lubricant
• 6804RS / 6804-2RS: Single or double rubber seals – offer superior resistance to moisture, dirt, and contaminants

Made from high-quality chrome steel (GCr15) with precision-ground raceways, these bearings deliver low friction and minimal noise under light to moderate radial loads. Widely used in small electric motors, dental and surgical tools, robotics joints, micro drones, smart wearables, lab automation, cooling fans, and precision instrumentation.

Most sealed variants come pre-lubricated with high-performance grease for maintenance-free operation. The 6804 series supports both radial and limited axial loads, making it suitable for compact, high-RPM applications requiring durability and long service life.

🔧 Key Specifications:

• Models: 6804, 6804Z, 6804ZZ (6804-2Z), 6804RS, 6804-2RS
• Dimensions: 20 × 32 × 7 mm
• Material: Chrome Steel (GCr15)
• Precision Rating: ABEC-1 (ISO P0)
• Ideal for: Medical devices, micro-electronics, robotics, and precision mechanisms