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62 Series
Home Deep Groove Ball Bearings 62 Series

6208-2RS Sealed Ball Bearing | Maintenance-Free Rubber Seal Performance | 40×80×18 mm

6208-2RS Sealed Ball Bearing | Maintenance-Free Rubber Seal Performance | 40×80×18 mm

The 6208-2RS is a high-performance, double-sealed single-row deep groove ball bearing designed for durability in environments where dust, dirt, and moisture are present. Unlike open bearings, this model features dual Nitrile Butadiene Rubber (NBR) seals that retain high-quality grease and prevent the ingress of contaminants. With a 40mm bore and 80mm outer diameter, the 6208-2RS offers a perfect balance of load capacity and compact design, making it a staple for electric motors and industrial machinery.

6208-2RS Deep Groove Ball Bearing 40x80x18 mm | Double Rubber Sealed | Pre-Lubricated for Life

This 2RS configuration is engineered for "fit-and-forget" reliability. The contact seals provide a physical barrier that ensures the internal raceways remain lubricated even in vertical or high-vibration orientations. It is the preferred choice for external mechanical assemblies where a secondary housing seal may not be present, offering excellent protection and reduced maintenance costs over the bearing's lifecycle.

 

6208-2RS Sealed Ball Bearing | Maintenance-Free Rubber Seal Performance | 40×80×18 mm

Comprehensive Applications

Optimized for versatility, the 6208-2RS is found in diverse sectors requiring robust protection against the elements:

Automotive & Transportation
  • Alternators and Starters
  • Trailer Hub Assemblies
  • Motorcycle Wheels and Transmissions
  • Pulley Systems
Fitness & Lifestyle Equipment
  • Treadmill Rollers
  • Exercise Bike Drive Trains
  • Rowing Machine Pulley Wheels
Electric Motors & Appliances
  • Industrial Electric Motors (AC/DC)
  • Commercial Washing Machines
  • Ceiling Fans and HVAC Blowers
  • Power Tools and Garden Equipment
Agricultural & Construction Machinery
  • Conveyor Idler Rollers
  • Harvester Rotary Components
  • Small Earthmoving Equipment
  • Water Pumps (Sealed Environments)

Key Performance Features

01. Superior Contaminant Protection

The reinforced NBR seals (2RS) provide effective resistance against dust, water spray, and chemical vapors. This ensures the integrity of the lubricant and prevents premature wear caused by abrasive particles.

02. Low-Noise Precision Engineering

Constructed from premium GCr15 Chrome Steel, the raceways are honed to a mirror finish. This results in significant noise reduction and minimal heat generation during continuous operation at moderate speeds.

03. Factory-Grade Grease Lubrication

Each bearing is pre-filled with the optimal volume of high-pressure grease. This eliminates the need for manual re-greasing and allows for immediate installation in high-demand industrial environments.

Technical Specifications

Bearing Type Single Row Deep Groove Ball Bearing
ISO Dimension Series 6200 Series (Medium Series)
Basic Designation 6208
Suffix 2RS (Two Rubber Seals)
Bore Diameter (d) 40 mm
Outer Diameter (D) 80 mm
Width (B) 18 mm
Material (Races & Balls) Chrome Steel (GCr15 / SAE 52100)
Precision Class ABEC-1 (ABEC-3/P6 Available)
Cage Material Pressed Steel Cage
Dynamic Load Rating (Cʳ) 30.7 kN
Static Load Rating (C₀ʳ) 19.0 kN
Limiting Speed (Grease) 5,600 r/min
Limiting Speed (Oil) --
Weight (approx.) 0.366 kg

Interchange Part Numbers

The 6208-2RS is globally standardized and interchangeable with:

  • SKF: 6208-2RSH / 6208-2RSH
  • NSK: 6208DDU
  • FAG: 6208-2RSR
  • NTN: 6208LLU
  • KOYO: 6208-2RS
  • Timken: 6208-2RS

Design & Configuration

The 6208-2RS is engineered for maximum reliability in challenging environments. Unlike the metal-shielded version, this bearing features dual high-performance Nitrile Butadiene Rubber (NBR) seals that are securely fastened to the outer ring and make continuous contact with the inner ring. This creates a highly effective physical barrier against the ingress of fine dust, moisture, and chemical vapors, while simultaneously ensuring that the premium internal grease remains trapped for the life of the bearing.

It is the optimal choice for equipment where maintenance is difficult or where the bearing is exposed to the elements, such as in outdoor machinery, wash-down environments, or heavily contaminated industrial sites.

"A robust, maintenance-free sealing solution designed to protect your machinery's core from the toughest environmental contaminants without sacrificing smooth rotational performance."

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