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62 Series
Home Deep Groove Ball Bearings 62 Series

6208-ZZ Shielded Deep Groove Ball Bearing for High-Velocity Drives | 40x80x18 mm

6208-ZZ Shielded Deep Groove Ball Bearing for High-Velocity Drives | 40x80x18 mm

The 6208-ZZ is a precision-engineered, single-row deep groove ball bearing featuring dual-sided metal shields. Designed for applications that require a balance between high-speed rotation and basic protection against debris, this bearing minimizes friction while retaining critical lubrication. With a 40 mm bore, 80 mm outer diameter, and an 18 mm width, the 6208-ZZ is a staple component in electric motors, centrifugal pumps, and automotive systems where maintenance-free performance and heat resistance are paramount.

6208-ZZ Deep Groove Ball Bearing 40×80×18 mm | 62 Series – Medium Duty | Double Metal Shielded

Built with deep-set raceways and high-grade rolling elements, the 6208-ZZ supports both radial and moderate axial loads in both directions. The "ZZ" configuration utilizes non-contact steel shields, which protect the internal components without adding the friction or heat generation typically found in contact-sealed bearings. Pre-greased for its entire service life, it is capable of operating at speeds up to 10,000 r/min under oil lubrication.

 

6208-ZZ Shielded Deep Groove Ball Bearing for High-Velocity Drives | 40x80x18 mm

Comprehensive Applications

A versatile solution across various precision-driven industrial sectors:

Electric Motors & Power Generation
  • General Purpose Industrial Motors
  • Alternators and Starters
  • Domestic Appliance Motors (Washing Machines/Dryers)
Fluid Handling & HVAC
  • High-Speed Centrifugal Pumps
  • Cooling Fans and Industrial Blowers
  • Air Compressor Shaft Supports
Agricultural & Power Tools
  • Circular Saws and Table Grinders
  • Mower Deck Spindles
  • Power Take-Off (PTO) Drive Assemblies
Automotive & Machinery
  • Transmission Input Shafts
  • Factory Automation Robotic Arms
  • Packaging and Bottling Machinery

Key Performance Features

01. Low-Friction Metal Shielding

The non-contact steel shields (-ZZ) provide an effective barrier against larger particulates and dust while allowing the bearing to run at higher RPMs and cooler temperatures than rubber-sealed variants.

02. Integrated Long-Life Lubrication

Each 6208-ZZ comes factory-filled with high-performance grease. The internal geometry and shields ensure the lubricant remains distributed across the raceways, extending the replacement interval and reducing operational costs.

03. Industrial-Grade Chrome Steel

Constructed from GCr15 (SAE 52100) high-carbon chrome steel, this bearing offers exceptional hardness and wear resistance. Precision-ground surfaces ensure low vibration and smooth operation even under continuous heavy loads.

Technical Specifications

Bearing Type Single Row Deep Groove Ball Bearing
ISO Dimension Series 62 Series – Medium Duty
Basic Designation 6208
Suffix ZZ (Double Metal Shields)
Bore Diameter (d) 40 mm
Outer Diameter (D) 80 mm
Width (B) 18 mm
Material (Races & Balls) Chrome Steel (GCr15 / SAE 52100)
Precision Class Standard / P5 Grade Available
Cage Material Pressed Steel (Standard)
Dynamic Load Rating (Cʳ) 30.7 kN
Static Load Rating (C₀ʳ) 19.0 kN
Limiting Speed (Grease) 8,500 r/min
Limiting Speed (Oil) 10,000 r/min
Weight (approx.) 0.37 kg

Interchange Part Numbers

For easy identification and global replacement:

  • SKF: 6208-2Z
  • NSK: 6208 ZZ
  • FAG: 6208-2Z
  • NTN: 6208 ZZ
  • KOYO: 6208 ZZ
  • Timken: 6208-ZZ

Design & Configuration

The 6208-ZZ is designed as a "fit-and-forget" component. The metal shields are fixed into the outer ring and form a narrow gap with the inner ring, effectively shielding against contaminants while maintaining the high-speed capability of an open bearing. This makes it the superior choice for high-RPM electric motors and clean-environment machinery.

"A high-performance shielded bearing that delivers the perfect combination of speed, durability, and cost-efficiency for modern industrial drives."

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