6406-2RS Deep Groove Ball Bearing For Heavy-Duty Protection & High Radial Loads | 30×90×23 mm

The 6406-2RS is a Sealed Deep Groove Ball Bearing from the robust 64 series, engineered to handle substantial radial and moderate axial loads while providing built‑in contamination resistance. Its double rubber seals (2RS) effectively retain grease and block dust, moisture, and debris, making it a reliable choice for harsh operating conditions. With a 30 mm bore, 90 mm outer diameter, and 23 mm width, this bearing is widely specified in heavy machinery, industrial gearboxes, pumps, and agricultural equipment where durability and low maintenance are critical.



6406-2RS Deep Groove Ball Bearing 30×90×23 mm | ISO 64 Series – Heavy Duty | Double Rubber Seals (2RS)

The deep groove raceway geometry of the 6406-2RS enables smooth, high‑speed rotation even under heavy loads. The integrated seals provide lifelong lubrication and protection, extending service life in contaminated environments. While the seals slightly reduce maximum speed compared to open variants, the bearing still delivers reliable performance with a grease speed limit of up to 8,000 r/min. It is capable of carrying significant radial forces and bidirectional axial loads, making it a versatile workhorse for demanding industrial drives.

6406-2RS Deep Groove Ball Bearing For Heavy-Duty Protection & High Radial Loads | 30×90×23 mm

Comprehensive Applications

Trusted across a wide range of heavy‑duty and general industrial equipment, the 6406-2RS delivers consistent performance where both load capacity and environmental sealing are required.

Heavy Machinery & Industrial Drives
  • Gearboxes and speed reducers
  • Large electric motors (AC/DC)
  • Industrial pumps and compressors
  • Heavy fans and blowers
Agricultural & Construction Equipment
  • Tractor drivetrains and PTO shafts
  • Harvesters and balers
  • Concrete mixers and compactors
  • Excavator auxiliary systems
Material Handling & Processing
  • Conveyor rollers and pulley blocks
  • Elevator and hoist mechanisms
  • Food processing machinery (washdown areas)
  • Paper mill and printing presses
Automotive & Off‑Highway
  • Truck wheel hubs (in combination with other bearings)
  • Heavy‑duty clutch release mechanisms
  • Alternators for commercial vehicles
  • Auxiliary transmissions and PTO drives

Key Performance Features

01. High Load Capacity & Rugged Construction

With its substantial 30×90×23 mm envelope and optimized internal geometry, the 6406-2RS delivers a high dynamic load rating and excellent static strength, ensuring long service life under shock loads and continuous heavy operation.

02. Integrated Sealing for Contamination Protection

The double‑lip rubber seals (2RS) provide effective lubrication retention and barrier against dust, water, and abrasive particles. This design eliminates the need for external seals in many applications and reduces maintenance intervals.

03. Precision‑Ground for Smooth & Quiet Running

Manufactured from high‑grade chrome steel with precision‑ground raceways and balls, the 6406-2RS guarantees low friction, minimal vibration, and quiet operation—even under heavy radial loads.

Technical Specifications

Bearing Type Single Row Deep Groove Ball Bearing
ISO Dimension Series 64 Series – Heavy Duty
Basic Designation 6406
Suffix 2RS (Double contact rubber seals)
Bore Diameter (d) 30 mm
Outer Diameter (D) 90 mm
Width (B) 23 mm
Material (Races & Balls) Chrome Steel (GCr15 / SAE 52100)
Precision Class Standard / P5 Grade Available
Cage Material Steel Stamped (Standard), Nylon Also Common
Dynamic Load Rating (Cʳ) 47.5 kN
Static Load Rating (C₀ʳ) 24.5 kN
Limiting Speed (Grease) 8,000 r/min
Limiting Speed (Oil) 10,000 r/min
Weight (approx.) 0.710 kg

Interchange Part Numbers

This bearing conforms to international standards and is directly interchangeable with all major brands:

  • SKF: 6406-2RS
  • NSK: 6406DUU
  • FAG: 6406-2RS
  • NTN: 6406LLU
  • KOYO: 6406-2RS
  • Timken: 6406-2RS

Design & Configuration

The 6406-2RS is supplied with double rubber seals as standard, providing lifelong lubrication and superior protection. For applications requiring even higher speed capabilities or different sealing arrangements, open (6406) or metal‑shielded (6406‑ZZ) variants are also available from stock.

"As a mainstay in the 64 series, the 6406-2RS sealed deep groove ball bearing is the preferred choice for engineers designing heavy industrial machinery, off‑highway equipment, and drive systems where reliability under harsh conditions is non‑negotiable."



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