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63 Series
Home Deep Groove Ball Bearings 63 Series

6310-2RS Heavy-Duty Deep Groove Ball Bearing | Premium Dual Rubber Seal | 50×110×27 mm Metric Series

6310-2RS Heavy-Duty Deep Groove Ball Bearing | Premium Dual Rubber Seal | 50×110×27 mm Metric Series

The 6310-2RS is a robust, medium-series deep groove ball bearing specifically engineered to accommodate substantial radial and axial loads in demanding industrial environments. Unlike miniature or thin-wall models, this heavy-duty bearing features thick cross-sections and large rolling elements, making it an absolute powerhouse for rigorous applications. Outfitted with dual contact rubber seals (2RS), it forms an impenetrable barrier against harsh contaminants, water ingress, and abrasive dust. With standardized metric dimensions—a 50 mm bore, 110 mm outer diameter, and 27 mm width—the 6310-2RS delivers unyielding structural integrity for heavy machinery, automotive transmissions, and large-scale industrial motors.

6310-2RS Deep Groove Ball Bearing 50x110x27 mm | Maximum Load Capacity | Rugged Architecture

Built around a "high-load, extreme-endurance" framework, the 2RS sealing mechanism utilizes specialized, steel-reinforced synthetic rubber that maintains positive contact with the inner ring. This design completely locks in the factory-injected premium synthetic grease, ensuring lifetime lubrication while aggressively blocking external debris. It is the premier choice for manufacturing plants, agricultural equipment, and heavy-duty drivetrain assemblies where maintenance-free longevity and high mechanical stability are non-negotiable.

6310-2RS Heavy-Duty Deep Groove Ball Bearing | Premium Dual Rubber Seal | 50×110×27 mm Metric Series

Comprehensive Applications

Due to its exceptional load-bearing capabilities and superior environmental sealing, the 6310-2RS is a critical component across various heavy industries:

Automotive & Agricultural Equipment
  • Tractor and Harvester Axles
  • Heavy Commercial Vehicle Transmissions
  • Off-Road Suspension and Wheel Hubs
Industrial & Manufacturing Machinery
  • Heavy-Duty Industrial Gearboxes
  • Large Centrifugal Pumps and Compressors
  • Conveyor Belt Pulley Systems
High-Power Electric Motors
  • Industrial AC/DC Generators
  • Large Wind Turbine Actuators
  • Heavy-Duty Mining Equipment Motors

Key Performance Features

01. Exceptional Load-Bearing Geometry

As part of the 6300 medium series, this bearing is characterized by larger steel balls and deeper raceways compared to the 6000 or 6200 series. This geometry dramatically amplifies both its dynamic and static load ratings, allowing it to absorb severe shocks and sustained heavy weights without deforming.

02. Ultimate Environmental Protection (2RS)

The heavy-duty double rubber seals provide a tight, contact-based labyrinth closure. This prevents the leakage of essential internal lubricants while successfully isolating the smooth raceways from corrosive moisture, mud, and metallic dust commonly found in heavy industrial operations.

03. Industrial-Grade Chrome Steel

Constructed from high-purity GCr15 Chrome Steel (AISI 52100) and treated with advanced thermal hardening processes. The resulting metallurgical strength delivers phenomenal wear resistance, minimizing the risk of metal fatigue even under continuous, high-torque operating conditions.

Technical Specifications

Bearing Type Single Row Deep Groove Ball Bearing
ISO Dimension Series 63 Series (Heavy-Duty Metric)
Basic Designation 6310
Suffix 2RS / 2RS1 / DDU (Dual Contact Rubber Seals)
Bore Diameter (d) 50 mm
Outer Diameter (D) 110 mm
Width (B) 27 mm
Material (Races & Balls) High-Carbon Chrome Steel (GCr15 / AISI 52100)
Precision Class ABEC-1 (ABEC-3 / ABEC-5 Upgrades Available)
Cage Material Heavy-Duty Stamped Steel Cage
Dynamic Load Rating (Cʳ) 61.8 kN
Static Load Rating (C₀ʳ) 38.0 kN
Limiting Speed (Grease) 4,800 r/min
Limiting Speed (Oil) 5,600 r/min
Weight (approx.) 1.07 kg

Interchange Part Numbers

The 6310-2RS strictly follows global ISO dimension standards and acts as a direct, universally compatible replacement for these major brand designations:

  • NSK: 6310DDU / 6310VV
  • SKF: 6310-2RS1 / 6310-2RSH
  • KOYO: 63102RS / 6310-2RS
  • NTN: 6310LLU
  • EZO: 63102RS / 6310-2RS
  • FAG: 6310-2RSR / 6310-2RS
  • Timken: 6310-2RS

Design & Configuration

The engineering focus of the 6310-2RS is maximizing operational uptime in punishing environments. While the contact seals induce a slight amount of starting torque compared to open or shielded bearings, this is a necessary trade-off to completely eliminate external contamination. The internal geometry is optimized to evenly distribute heavy stresses across the rolling elements, reducing localized heat generation during continuous industrial use.

It is the ultimate mechanical foundation for engineers and maintenance teams building or repairing heavy apparatuses where frequent relubrication is impossible and equipment failure is costly.

"A rugged, high-capacity industrial bearing built to deliver uncompromising load support and impenetrable contaminant resistance for heavy machinery."

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