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62 Series
Home Deep Groove Ball Bearings 62 Series

6216 Open Deep Groove Ball Bearing | High-Endurance Unsealed Industrial Solution | 80×140×26 mm

6216 Open Deep Groove Ball Bearing | High-Endurance Unsealed Industrial Solution | 80×140×26 mm

The 6216 is a premium single-row open deep groove ball bearing crafted for heavy-duty rotary applications where continuous lubrication and minimal rotational resistance are paramount. Featuring an unsealed perimeter, this open-type configuration grants direct access to the internal ball complement and micro-raceways, making it an ideal fit for enclosed machinery operating with oil-bath or oil-mist lubrication setups. Manufactured to strict metric specifications—boasting an 80 mm bore, 140 mm outer diameter, and 26 mm width—the 6216 offers outstanding structural rigidity and reliable operational life under demanding mechanical loads.

6216 Deep Groove Ball Bearing 80x140x26 mm | Open Architecture | High-Efficiency Structural Layout

Engineered around a "zero-drag, maximum-flow" philosophy, the open layout completely eliminates the localized frictional heat and torque overhead typical of rubber lip seals. This unrestricted design permits the bearing to operate at its peak thermal efficiency by allowing the lubricating media to carry away operational heat seamlessly. It serves as the benchmark choice for medium-to-heavy electric motors, transmission gearboxes, and industrial fluid pumps where minimizing internal energy losses is vital for system longevity.

6216 Open Deep Groove Ball Bearing | High-Endurance Unsealed Industrial Solution | 80×140×26 mm

Comprehensive Applications

Tailored for high-reliability industrial frameworks and power transmission systems, the 6216 Open bearing is extensively utilized across several demanding sectors:

Electric Motors & Generators
  • Medium-to-large Industrial Motors
  • Alternators
  • Ventilation Blowers
Manufacturing Equipment
  • Textile machinery
  • Paper Mill Rollers
  • High-speed Printing Presses
Pumping & Fluid Machinery
  • Multi-stage Centrifugal Water Pumps
  • Heavy-duty Oil Field Machinery

Key Performance Features

01. Unimpeded Lubricant Circulation

The absence of protective shields or seals allows external oil or grease to cycle continuously through the bearing's rolling elements. This ensures instant lubrication film replenishment and assists in flushing out fine debris or contaminants into external filtration systems.

02. Frictional Drag Elimination

Without any contact seals pressing against the inner ring, the bearing operates with virtually zero added friction. This reduces starting torque requirements and prevents localized heat generation, allowing for sustained, cooler operation under continuous-duty cycles.

03. Balanced Multi-Directional Load Support

Forged from premium-grade GCr15 High-Carbon Chrome Steel, the deep, uninterrupted raceway grooves are precisely matched to the ball curvature. This layout allows the assembly to manage significant radial loads while simultaneously accommodating moderate axial forces in both directions.

Technical Specifications

Bearing Type Single Row Deep Groove Ball Bearing
ISO Dimension Series 62 Series (Medium Duty)
Basic Designation 6216
Suffix None (Open Configuration)
Bore Diameter (d) 80 mm
Outer Diameter (D) 140 mm
Width (B) 26 mm
Material (Races & Balls) High-Carbon Chrome Steel (GCr15 / SAE 52100)
Precision Class ISO Class 6 (ABEC-3) / Class 5 (ABEC-5) Available
Cage Material Standard Pressed Steel Cage
Dynamic Load Rating (Cʳ) 72.8 kN
Static Load Rating (C₀ʳ) 55.0 kN
Limiting Speed (Grease) 5,000 r/min
Limiting Speed (Oil) 6,000 r/min
Weight (approx.) 1.40 kg

Interchange Part Numbers

The 6216 metric dimension standard is globally normalized, allowing it to serve as a direct replacement for the following prominent industry designations:

  • KOYO: 6216
  • SKF/FAG: 6216
  • NSK: 6216
  • NTN: 6216
  • Timken: 6216

Design & Configuration

The mechanical design of the 6216 open bearing prioritizes fluid integration and rapid thermal dispersion over built-in contaminant shielding. Because the bearing relies on the machinery's external housing or casing seals to protect against dust and water entry, it is free to exploit the host system's oil-circulation infrastructure. This synergy minimizes the risk of dry running or premature fatigue during extended operational schedules.

It represents the optimal component upgrade for engineers designing or maintaining rotating machinery with dedicated oil sumps, ensuring massive kinetic forces are transferred with maximum efficiency and minimized wear.

"A high-efficiency, open industrial core engineered to handle substantial radial forces while enabling unhindered thermal dissipation via direct lubrication exposure."

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