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68 Series
Home Deep Groove Ball Bearings 68 Series

683-ZZ Miniature Deep Groove Ball Bearing Shielded High-Speed | 3×7×3 mm

683-ZZ Miniature Deep Groove Ball Bearing Shielded High-Speed | 3×7×3 mm

The 683-ZZ is a Premium Miniature Single Row Deep Groove Ball Bearing designed for ultra-high-speed rotation and low-friction performance in compact mechanical assemblies. Featuring a double-shielded configuration (ZZ), this micro-bearing effectively locks in pre-filled grease while keeping out dust and microscopic debris. With a highly compact 3mm bore and a 7mm outer diameter, the 683-ZZ delivers exceptional reliability for precision instruments, micro-motors, and advanced robotics where space is strictly limited but performance requirements are high.

683-ZZ Deep Groove Ball Bearing 3×7×3 mm | ISO 68 Series – Miniature | Shielded Design (ZZ)

This highly adaptable miniature bearing is precision-engineered to accommodate moderate radial loads alongside minor axial loads in both directions. Outfitted with dual metal shields, the 683-ZZ is permanently lubricated and maintenance-free, excelling in rapid-motion environments with operating speeds capable of reaching up to 58,000 r/min (Grease). It functions as a critical rotational core for lightweight equipment, ensuring seamless operation, minimized heat generation, and an extended lifespan in enclosed systems.

683-ZZ Miniature Deep Groove Ball Bearing Shielded High-Speed | 3×7×3 mm

Comprehensive Applications

Ideal for compact mechanical assemblies and high-speed micro-rotary systems requiring strict dimensional accuracy and reliable performance:

Precision Robotics & Automation
  • Micro Robotic Articulation Joints
  • Stepper Motor Assemblies
  • High-Resolution Rotary Encoders
  • 3D Printer Extruder Mechanisms
Medical & Laboratory Devices
  • High-Speed Dental Handpieces
  • Compact Laboratory Centrifuges
  • Automated Liquid Handling Pumps
  • Portable Surgical Power Tools
Remote Control (RC) Hobbies
  • RC Car Wheel Hubs and Gearboxes
  • Drone and Quadcopter Brushless Motors
  • RC Helicopter Main and Tail Rotors
  • Micro Servo Motor Components
Compact Electronics & Motors
  • Computer CPU Cooling Fans
  • Small Household Appliance Motors
  • Precision Measuring Instruments
  • Handheld Power Tool Spindles

Key Performance Features

01. Ultra-High-Speed Capabilities

Manufactured with strict dimensional tolerances (Standard P0 / P5 available), the 683-ZZ utilizes finely polished raceways and a low-friction steel cage. This internal geometry drastically reduces rotational resistance, allowing the bearing to operate quietly and smoothly at speeds up to 58,000 RPM without overheating.

02. Dual Metal Shields (ZZ) for Protection

Equipped with pressed steel shields on both sides, this model offers excellent defense against particulate contamination. The non-contact shield design ensures there is no added friction torque, making it the superior choice for environments where maintenance access is difficult and high-speed efficiency is required.

03. Optimized for Micro-Scale Load Distribution

Despite its ultra-compact 68 Series dimensions (3×7×3 mm), the 683-ZZ provides a stable dynamic load rating of 0.311 kN. The high-quality GCr15 chrome steel construction ensures it withstands continuous rotational stress, resisting wear and deformation in continuous-duty miniature applications.

Technical Specifications

Bearing Type Single Row Deep Groove Ball Bearing
ISO Dimension Series 68 Series – Miniature
Basic Designation 683
Suffix ZZ (Double Metal Shields)
Bore Diameter (d) 3 mm
Outer Diameter (D) 7 mm
Width (B) 3 mm
Material (Races & Balls) Chrome Steel (GCr15 / SAE 52100)
Precision Class Standard (P0) / P6 or P5 Available Upon Request
Cage Material Steel Stamped
Dynamic Load Rating (Cʳ) 0.311 kN
Static Load Rating (C₀ʳ) 0.112 kN
Limiting Speed (Grease) 58,000 r/min
Limiting Speed (Oil) 67,000 r/min
Weight (approx.) 0.45 g

Interchange Part Numbers

Common manufacturer equivalents include:

  • SKF: 683-2Z / W683-2Z
  • NSK: 683ZZ
  • NTN: 683ZZ
  • KOYO: 683ZZ
  • Timken: 683ZZ

Design & Configuration

The 683-ZZ is factory-supplied with dual metal shields (ZZ) and pre-lubricated with high-performance grease, providing a ready-to-mount solution for dust-prone, high-speed applications. If your assembly requires protection against liquid ingress rather than just dry contaminants, this model can be customized with rubber contact seals (683-2RS). For extreme high-speed or ultra-low friction needs, open variants (683) without shields are also available.

"Select the 683-ZZ Shielded Bearing for miniature precision applications where rapid rotation, compact sizing, and zero-maintenance longevity are essential."

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Request a Quote for Ball Bearings

Request a Quote for Ball Bearings
Please submit your inquiry below for detailed product and pricing information. We will get back to you within 24 hours.
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