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68 Series
Home Deep Groove Ball Bearings 68 Series

682-ZZ High-Speed Miniature Ball Bearing with Dual Metal Shields | 2×5×2.3 mm

682-ZZ High-Speed Miniature Ball Bearing with Dual Metal Shields | 2×5×2.3 mm

The 682-ZZ is a precision-engineered, double-shielded miniature deep groove ball bearing designed for high-velocity applications where minimal friction is a critical requirement. With its compact 2 mm bore and 5 mm outer diameter, this bearing provides exceptional rotational stability in micro-scale assemblies. Equipped with two non-contact metal shields (ZZ), it effectively prevents the ingress of larger debris and retains factory-applied grease without the frictional drag associated with contact seals, making it ideal for high-RPM micro-motors.

682-ZZ Deep Groove Ball Bearing 2×5×2.3 mm | 6800 Series Miniature | Double Metal Shielded

Designed for low-torque and high-frequency operation, this shielded micro-bearing features ultra-precise raceway finishing to ensure whisper-quiet performance. Capable of reaching speeds up to 75,000 r/min under oil lubrication (or 63,000 r/min with grease), it excels in handling radial and light axial loads. It is a premier choice for engineers designing high-speed precision hardware where energy efficiency and thermal stability are prioritized over heavy environmental sealing.

682-ZZ High-Speed Miniature Ball Bearing with Dual Metal Shields | 2×5×2.3 mm

Comprehensive Applications

Ideally suited for micro-scale rotating components and high-speed assemblies requiring low-friction, maintenance-free performance:

High-End Consumer Electronics
  • Professional Camera Lens Drives
  • Computer Peripheral Roller Supports
  • Precision Remote Control (RC) Vehicles
  • Smart Home Device Rotating Bases
Miniaturized Power Systems
  • Ultra-High-Speed Micro-Fans
  • Small Brushless DC (BLDC) Motors
  • Miniaturized Gearbox Drive Shafts
  • Stepper Motor Feedback Encoders
Medical & Laboratory Equipment
  • Portable Diagnostic Devices
  • High-Speed Micro-Centrifuges
  • Laboratory Fluid Stirring Units
  • Dental Handpiece Internal Components
Micro-Robotics & Precision Control
  • Miniature Servo Motor Actuators
  • Robotic Joint Positioning Gears
  • Micro-Linear Guide Rail Pulleys
  • Precision Drone Gimbal Stabilizers

Key Performance Features

01. Refined Miniature Architecture

Forged from premium-grade chrome steel (GCr15), this bearing features a slim 2.3 mm width. This space-saving configuration allows for the downsizing of complex mechanical systems, enabling higher power density in micro-electronic devices without compromising on the axial rigidity of the shaft.

02. Low-Drag Shielding Technology

The 682-ZZ utilizes non-contact metal shields that do not touch the inner ring. This design minimizes frictional heat and starting torque, allowing the bearing to operate at significantly higher speeds than sealed versions while maintaining a barrier against dust and airborne particles.

03. Superior High-Frequency Performance

Each 682-ZZ bearing is manufactured to P5 precision tolerances and strict vibration standards. The precision-ground raceways and high-quality steel balls ensure minimal vibration and noise, which is vital for the long-term reliability of sensitive sensors and high-precision medical tools.

Technical Specifications

Bearing Type Single Row Deep Groove Ball Bearing
ISO Dimension Series 6800 Series – Miniature
Basic Designation 682
Suffix ZZ (Double Metal Shields)
Bore Diameter (d) 2 mm
Outer Diameter (D) 5 mm
Width (B) 2.3 mm
Material (Races & Balls) Chrome Steel (GCr15 / SAE 52100)
Precision Class Standard (P0) / P6 or P5 Available Upon Request
Cage Material Pressed Stainless Steel Crown Cage
Dynamic Load Rating (Cʳ) 167 N
Static Load Rating (C₀ʳ) 51 N
Limiting Speed (Grease) 63,000 r/min
Limiting Speed (Oil) 75,000 r/min
Weight (approx.) 0.17 g

Interchange Part Numbers

Equivalent parts from global industry leaders:

  • SKF: 682-2Z
  • NSK: 682ZZ
  • NTN: 682ZZ
  • KOYO: 682ZZ
  • NMB: L-520W52ZZ / MR52ZZ

Design & Configuration

The 682-ZZ is the preferred solution for engineers who require maximum speed and minimal energy loss in a miniature footprint. Its metal shields offer durability and thermal resistance, making it suitable for high-speed micro-motors that generate internal heat.

For applications requiring corrosion resistance in medical or outdoor environments, stainless steel versions (S682-ZZ) are also available. For environments with high dust or moisture where speed is less critical, the contact-sealed version (682-2RS) is the recommended alternative for maximum protection.

"Where high-velocity rotation meets microscopic precision, the 682-ZZ provides the frictionless performance and technical reliability required for today’s most advanced micro-engineering projects."

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