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64 Series
Home Deep Groove Ball Bearings 64 Series

6420 Open Deep Groove Ball Bearing For Heavy-Duty Industrial Applications | 100×250×58 mm

6420 Open Deep Groove Ball Bearing For Heavy-Duty Industrial Applications | 100×250×58 mm

The 6420 Open is a standard single-row deep groove ball bearing engineered for demanding industrial environments. With a 100 mm bore, 250 mm outer diameter, and 58 mm width, this open-type bearing delivers robust radial and axial load capacity. It is widely used in heavy electric motors, large pumps, compressors, and industrial gearboxes where reliable performance and long service life are essential. The open configuration allows for flexible lubrication methods, making it suitable for both oil bath and grease systems.

6418 Deep Groove Ball Bearing 100x250x58 mm | Standard Series | Open Type

A robust and versatile deep groove ball bearing designed for high radial and axial load handling. Featuring an open configuration for flexible lubrication, the 6420 operates reliably at speeds up to 3,400 r/min (Oil). It is a trusted component in heavy machinery, industrial motors, and large-scale rotating equipment where durability and precision are critical.

 

 

6420 Open Deep Groove Ball Bearing For Heavy-Duty Industrial Applications | 100×250×58 mm

Comprehensive Applications

Ideally suited for a broad spectrum of heavy industrial and commercial equipment:

Heavy Electric Motors & Generators
  • Large AC Induction Motors
  • DC Motor Armatures
  • Motor-Generator Sets
  • Traction Motors
Industrial Pumps & Compressors
  • Centrifugal Pumps
  • Screw Compressors
  • Reciprocating Compressors
  • Cooling Tower Pumps
Large Fans & Blowers
  • Industrial Exhaust Fans
  • Cooling Tower Fans
  • Forced Draft Fans
  • HVAC Centrifugal Fans
Mining & Material Handling
  • Conveyor Pulleys
  • Crushers & Mills
  • Vibrating Screens
  • Bucket Elevators

Key Performance Features

01. High Radial and Axial Load Capacity

The 6420 features deep groove raceways optimized to accommodate substantial radial loads and bidirectional axial loads. Its robust construction with large chrome steel balls ensures reliable performance under heavy loads and shock conditions common in industrial machinery.

02. Precision Tolerances for Vibration Control

Manufactured to standard precision class (P0) with availability in higher grades (P6, P5) for vibration-sensitive applications. The optimized internal geometry and high-grade steel contribute to smooth, quiet operation even at high speeds, reducing noise and heat generation.

03. Open Configuration for Flexible Lubrication

As an open bearing, the 6420 allows direct lubrication from the housing or shaft, making it ideal for applications requiring frequent re-lubrication or oil bath systems. This design also facilitates easy inspection and maintenance, extending bearing life in demanding environments.

Technical Specifications

Bearing Type Single Row Deep Groove Ball Bearing
ISO Dimension Series 64 Series – Standard Series
Basic Designation 6420
Suffix Open (no suffix)
Bore Diameter (d) 100 mm
Outer Diameter (D) 250 mm
Width (B) 58 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) 206 kN 
Static Load Rating (C₀ʳ) 175 kN
Limiting Speed (Grease) 2,900 r/min
Limiting Speed (Oil) 3,400 r/min
Weight (approx.) 15 kg

Interchange Part Numbers

Direct replacement for:

  • SKF: 6420
  • NSK: 6420
  • FAG: 6420
  • NTN: 6420
  • KOYO: 6420
  • Timken: 6420

Design & Configuration

The 6420 is supplied as an open bearing. For applications requiring protection from contaminants, sealed or shielded variants (e.g., 6420-2RS, 6420-ZZ) are available upon request. Consult our engineering team for custom configurations or specific cage materials to match your operating conditions.

"A reliable choice for heavy industrial drives, large pumps, and mining equipment where high load capacity and durability are paramount."

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