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60 Series
Home Deep Groove Ball Bearings 60 Series

6021 Open Deep Groove Ball Bearing | High-Velocity Radial Performance | 105×160×26 mm

6021 Open Deep Groove Ball Bearing | High-Velocity Radial Performance | 105×160×26 mm

The 6021 is a high-precision, unshielded radial ball bearing designed for seamless integration into sophisticated mechanical systems. Part of the 6000 "Extra Light" series, it provides a large 105 mm bore within a space-efficient 160 mm outer diameter, making it the perfect solution for heavy-duty shafts requiring high rotational accuracy. This open-type configuration is specifically intended for environments where external oil-mist or oil-bath lubrication is continuously supplied, ensuring maximum service life in high-speed industrial gearboxes.

6021 Deep Groove Ball Bearing 105x160x26 mm | Unshielded Design | Enhanced Lubricant Flow

Engineered without the drag of internal seals, the 6021 Open bearing offers the lowest rotational resistance in its class. This open geometry allows for unrestricted lubricant circulation across the precision-honed raceways, facilitating rapid cooling during high-load operations. It is a critical component for internal drive trains and motor housings where the bearing is shielded by a secondary enclosure, allowing for frictionless power transmission.

 

6021 Open Deep Groove Ball Bearing | High-Velocity Radial Performance | 105×160×26 mm

Comprehensive Applications

The 6021 Open is optimized for large-scale industrial machinery and high-torque environments:

Heavy Industrial Transmissions
  • Industrial Reduction Gearsets
  • Marine Propulsion Shafts
  • Planetary Power Drives
  • Commercial Vehicle Transmissions
High-Power Electric Motors
  • Large AC/DC Industrial Motors
  • High-Speed Turbine Generators
  • Vertical Pump Motors
  • Traction Motor Assemblies
Fluid Dynamics & Processing
  • High-Volume Centrifugal Pumps
  • Rotary Screw Air Compressors
  • Hydraulic Vane Pumps
  • Industrial Fluid Agitators
Precision Manufacturing
  • Paper Mill Calender Rollers
  • Textile Machinery Main Drives
  • High-Precision Machine Tool Spindles
  • Automated Material Handling Systems

Key Performance Features

01. Zero-Contact Rotational Efficiency

By eliminating the friction associated with contact seals, the 6021 Open reaches significantly higher limiting speeds. This unshielded design minimizes heat generation, making it the ideal choice for energy-sensitive applications where high RPMs are the standard.

02. Advanced Thermal Management

The open internal structure allows the bearing to "breathe," utilizing the surrounding oil or air to dissipate heat instantly. This prevents the thermal expansion issues often found in sealed units, ensuring dimensional stability in fluctuating temperature environments.

03. High-Purity GCr15 Chrome Steel Build

Manufactured using vacuum-degassed GCr15 Chrome Steel (SAE 52100), our bearings undergo rigorous heat treatment for stabilized hardness. The deep-groove raceways are ground to ABEC tolerances to ensure minimal vibration and long-term fatigue resistance under radial and axial loads.

Technical Specifications

Bearing Type Single Row Deep Groove Ball Bearing
ISO Dimension Series 6000 Series (Extra Light Series)
Basic Designation 6021
Suffix None (Open Type)
Bore Diameter (d) 105 mm
Outer Diameter (D) 160 mm
Width (B) 26 mm
Material (Races & Balls) Chrome Steel (GCr15 / SAE 52100)
Precision Class ABEC-1 (Standard) / P6 or P5 (Available)
Cage Material Pressed Steel Cage
Dynamic Load Rating (Cʳ) 72.8 kN
Static Load Rating (C₀ʳ) 65.5 kN
Limiting Speed (Grease) 4,300 r/min
Limiting Speed (Oil) 5,000 r/min
Weight (approx.) 1.60 kg

Interchange Part Numbers

Directly interchangeable with the following global brands:

  • SKF: 6021
  • NSK: 6021
  • FAG: 6021
  • NTN: 6021
  • KOYO: 6021
  • Timken: 6021

Design & Configuration

The Welink 6021 Open bearing arrives with a protective oil coating and is ready for immediate installation into lubricated systems. It is designed for "clean-room" or internal gearbox environments. For applications exposed to external debris, moisture, or dust, we recommend our 6021-ZZ (Steel Shielded) or 6021-2RS (Rubber Sealed) models.

"Enhance your large-bore machinery with the 6021 Open bearing—delivering ultra-low friction, high thermal stability, and world-class industrial reliability."

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