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62 Series
Home Deep Groove Ball Bearings 62 Series

6211-2RS Rubber Sealed Deep Groove Ball Bearing for Harsh Environments | 55x100x21 mm

6211-2RS Rubber Sealed Deep Groove Ball Bearing for Harsh Environments | 55x100x21 mm

The 6211-2RS is a robust, single-row deep groove ball bearing specifically engineered for maximum protection against environmental contaminants. Outfitted with dual contact rubber seals (NBR), this bearing is designed to thrive in applications where dust, moisture, and debris are prevalent. Measuring 55 mm (bore) x 100 mm (OD) x 21 mm (width), it provides an ideal combination of sealing efficiency and radial load capacity, ensuring a long service life for industrial and outdoor equipment.

6211-2RS Deep Groove Ball Bearing 55×100×21 mm | 62 Series – Medium Duty | Dual Contact Seals

Featuring a precision-ground raceway for optimized performance, the 6211-2RS offers superior grease retention and exclusion of foreign particles. The synthetic rubber seals are reinforced with a steel insert to maintain a tight contact with the inner ring. This design is pre-lubricated with high-performance grease, making it a completely maintenance-free solution for demanding mechanical assemblies operating at speeds up to 4,500 r/min.

 

6211-2RS Rubber Sealed Deep Groove Ball Bearing for Harsh Environments | 55x100x21 mm

Comprehensive Applications

Built to provide reliable rotation in sectors where protection from the elements is a priority:

Outdoor & Agricultural Machinery
  • Harvesters and Field Tractors
  • Irrigation Pump Systems
  • Forestry Equipment and Sawmills
Fluid Power & HVAC
  • Industrial Water Pumps
  • Outdoor Ventilation Units
  • Air Compressor Drive Shafts
Waste & Material Handling
  • Conveyor Systems in Dust-Heavy Facilities
  • Recycling Plant Machinery
  • Sorting Line Rollers
Automotive & Off-Road
  • Heavy-Duty Trailer Hubs
  • Power Take-Off (PTO) Units
  • Construction Vehicle Auxiliaries

Key Performance Features

01. Enhanced NBR Contact Sealing

The 2RS configuration features Nitrile Butadiene Rubber seals on both sides. Unlike metal shields, these seals provide a physical contact barrier that effectively blocks liquid spray and fine particulates from reaching the internal rolling elements.

02. Maintenance-Free Lubrication Life

Each bearing is factory-packed with the correct volume of premium grease. The contact seals ensure the lubricant stays exactly where it is needed—on the raceways—preventing leakage and eliminating the need for regular relubrication intervals.

03. High-Grade Durability

Constructed from GCr15 high-carbon chrome steel, the 6211-2RS undergoes rigorous heat treatment. This ensures high surface hardness and excellent fatigue resistance, allowing the bearing to handle 43.6 kN of dynamic radial force with ease.

Technical Specifications

Bearing Type Single Row Deep Groove Ball Bearing
ISO Dimension Series 62 Series – Medium Duty
Basic Designation 6211
Suffix 2RS (Dual Contact Rubber Seals)
Bore Diameter (d) 55 mm
Outer Diameter (D) 100 mm
Width (B) 21 mm
Material (Races & Balls) Chrome Steel (GCr15 / SAE 52100)
Precision Class Standard / P5 Grade Available
Cage Material Stamped Steel
Dynamic Load Rating (Cʳ) 43.6 kN
Static Load Rating (C₀ʳ) 29.0 kN
Limiting Speed (Grease) 4,500 r/min
Limiting Speed (Oil) 5,600 r/min* (Note: Generally used with grease, oil speed for reference)
Weight (approx.) 0.61 kg

Interchange Part Numbers

For seamless replacement, this bearing is equivalent to:

  • SKF: 6211-2RS1
  • NSK: 6211 DDU
  • FAG: 6211-2RSR
  • NTN: 6211 LLU
  • KOYO: 6211 2RS
  • Timken: 6211-2RS

Design & Configuration

The 6211-2RS is delivered ready for immediate installation. While the contact seals provide the highest level of protection, they do introduce a small amount of friction, making them slightly better suited for moderate-speed applications compared to open or shielded types. They are the "gold standard" for reliability in wet or dirty environments.

"The ultimate 'seal-and-forget' bearing solution for heavy-duty systems where downtime caused by contamination is not an option."

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