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63 Series
Home Deep Groove Ball Bearings 63 Series

6314-2RS Heavy-Duty Deep Groove Ball Bearing | Double Rubber Sealed Protection | 70×150×35 mm

6314-2RS Heavy-Duty Deep Groove Ball Bearing | Double Rubber Sealed Protection | 70×150×35 mm

The 6314-2RS is a robust, heavy-series metric deep groove ball bearing built specifically to endure demanding industrial environments and high-load applications. Equipped with heavy-duty dual contact rubber seals (2RS), this model provides superior defense against moisture, dirt, and heavy particulate contamination. Measuring 70 mm in the bore, 150 mm in outer diameter, and 35 mm in width, the 6314-2RS is an indispensable mechanical component for large-scale electric motors, heavy automotive transmissions, and rugged agricultural machinery requiring maintenance-free reliability.

6314-2RS Deep Groove Ball Bearing 70×150×35 mm | Superior Contamination Control with 2RS Sealing

Designed to thrive in harsh, unforgiving operational conditions, the 2RS configuration utilizes advanced synthetic rubber seals bonded to steel washers. These seals make direct contact with the inner ring, creating a tight physical barrier. This layout firmly retains the premium factory grease for the entire lifespan of the bearing, while simultaneously preventing the ingress of water, abrasive dust, and chemical fluids. It is the ultimate choice for outdoor equipment and heavy processing plants where external debris is a constant threat to mechanical integrity.

6314-2RS Heavy-Duty Deep Groove Ball Bearing | Double Rubber Sealed Protection | 70×150×35 mm

Comprehensive Applications

Recognized for its exceptional load-bearing strength and environmental resilience, the 6314-2RS is widely deployed across heavy-duty commercial and industrial sectors:

Heavy Machinery & Construction
  • Earthmoving Equipment Axles
  • Heavy-Duty Conveyor Drive Pulleys
  • Vibratory Screens and Crushers
Automotive & Commercial Transport
  • Commercial Truck Gearboxes and Transmissions
  • Large Commercial Vehicle Wheel Hubs
  • Heavy-Duty Alternators
Agriculture & Farming Equipment
  • Tractor Power Take-Off (PTO) Shafts
  • Harvester Rotary Mechanisms
  • Tiller and Seeder Assemblies
Industrial Motors & Power Generation
  • High-Capacity Electric Motors
  • Wind Turbine Secondary Gearboxes
  • Industrial Water and Oil Pumps

Key Performance Features

01. Advanced Contact Sealing (2RS)

The double-sided nitrile rubber (NBR) seals provide rigorous environmental protection. By maintaining direct contact with the inner raceway recess, these seals create a waterproof and dustproof environment for the internal rolling elements, drastically reducing the risk of premature failure due to contamination.

02. Massive Load-Bearing Capacity

Belonging to the 6300 "heavy" series, the 6314 is manufactured with larger rolling balls and thicker inner/outer rings compared to standard 6000 or 6200 series bearings. This robust geometry allows it to easily absorb heavy radial loads and moderate axial loads simultaneously without structural fatigue.

03. Maintenance-Free Longevity

Because the 2RS seals securely lock in the lubrication, this bearing comes pre-filled with a carefully calibrated amount of premium, temperature-stable grease. This completely eliminates the need for manual re-lubrication intervals, saving significant time and maintenance costs over the equipment's lifecycle.

Technical Specifications

Bearing Type Single Row Deep Groove Ball Bearing
ISO Dimension Series 6300 Series (Heavy-Duty Metric)
Basic Designation 6314
Suffix 2RS / DDU / LLU (Double Rubber Contact Seals)
Bore Diameter (d) 70 mm
Outer Diameter (D) 150 mm
Width (B) 35 mm
Material (Races & Balls) High-Carbon Chrome Steel (GCr15 / AISI 52100)
Precision Class ABEC-1 (ABEC-3 / ABEC-5 Upgrades Available)
Cage Material Standard Pressed Steel Cage
Dynamic Load Rating (Cʳ) 104 kN
Static Load Rating (C₀ʳ) 68 kN
Limiting Speed (Grease) 3,200 r/min
Limiting Speed (Oil) 3,800 r/min
Weight (approx.) 2.53 kg

Interchange Part Numbers

As a globally standardized metric component, the Welink 6314-2RS can seamlessly replace equivalent heavy-duty bearings from major international brands:

  • NSK: 6314 DDU
  • SKF: 6314-2RS1 / 6314-2RSH
  • KOYO: 6314 2RS
  • NTN: 6314 LLU
  • EZO: 6314 2RS
  • FAG: 6314-2RSR
  • Nachi: 6314-2NSE

Design & Configuration

The structural architecture of the 6314-2RS is purposefully designed for endurance. The combination of thick-walled GCr15 Chrome Steel rings and precision-matched steel balls creates a highly rigid core capable of sustaining extreme mechanical stress.

While the contact seals naturally generate a slight amount of rotational friction compared to open or metal-shielded bearings, this is a necessary and highly effective trade-off. It provides absolute peace of mind in high-contamination zones like agricultural fields, mining sites, and heavy manufacturing floors, ensuring the system continues to run smoothly when exposed to the harshest elements.

"A rugged, heavy-duty mechanical foundation engineered to lock out severe contamination while supporting massive industrial loads with unyielding reliability."

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