6811, 6811Z, 6811ZZ, 6811RS, 6811-2RS Ball Bearings 55x72x9mm – Heavy-Duty Deep Groove Ball Bearings for High-Speed Industrial & Mechanical Systems

6811, 6811Z, 6811ZZ, 6811RS, 6811-2RS Ball Bearings 55x72x9mm – Heavy-Duty Deep Groove Ball Bearings for High-Speed Industrial & Mechanical Systems

High-capacity 6811 series deep groove ball bearings in size 55mm (ID) × 72mm (OD) × 9mm (W), engineered for demanding industrial and mechanical applications that require reliable, smooth, and durable performance under moderate to heavy radial loads. Available in multiple sealing configurations to suit diverse operating environments:

• 6811: Open type – ideal for clean or controlled settings with custom lubrication
• 6811Z / 6811ZZ (6811-2Z): Single or double metal shields – protect against dust while retaining factory grease
• 6811RS / 6811-2RS: Single or double rubber seals – provide excellent resistance to moisture, dirt, and contaminants

Made from premium chrome steel (GCr15) with precision-ground raceways, these bearings ensure low friction, minimal noise, and stable high-speed operation. Widely used in industrial motors, gearboxes, agricultural and construction machinery, pumps, compressors, conveyor systems, and power transmission equipment.

Most sealed models are pre-lubricated with high-performance grease for maintenance-free operation. The 6811 series supports both radial and limited axial loads, making it a robust solution for heavy-duty mechanical designs requiring long service life and operational reliability.

🔧 Key Specifications:

• Models: 6811, 6811Z, 6811ZZ (6811-2Z), 6811RS, 6811-2RS
• Dimensions: 55 × 72 × 9 mm
• Material: Chrome Steel (GCr15)
• Precision Rating: ABEC-1 (ISO P0)
• Ideal for: Industrial automation, fluid handling, heavy machinery, and power transmission