602 Open Deep Groove Ball Bearing for Miniature High-Speed Applications | 2×7×3.5 mm

The 602 Open is a Miniature Deep Groove Ball Bearing engineered for ultra-compact mechanisms where minimal friction and high rotational speeds are paramount. With an open design (without shields or seals), this bearing allows maximum speed capability and easy relubrication, making it ideal for precision instruments, small motors, and devices that demand low torque and smooth, quiet operation in clean environments. Its 2 mm bore and ultra-light cross-section enable integration into the most space-constrained assemblies.



602 Deep Groove Ball Bearing 2×7×3.5 mm | ISO 69 Series – Extra Light | Open Type

This versatile open bearing is designed for exceptionally smooth and reliable operation at speeds up to 60,000 r/min (Oil). It handles light radial loads and minimal axial loads, making the 602 Open an excellent choice for high-speed spindles, miniature drives, and precision measuring equipment where low friction and long-term performance are critical.

602 Open Deep Groove Ball Bearing for Miniature High-Speed Applications | 2×7×3.5 mm

Comprehensive Applications

Ideally suited for a broad spectrum of industrial and commercial equipment requiring inch-dimension bearings:

Precision & Medical Equipment
  • Micro Surgical Tools & Dental Handpieces
  • Laboratory Centrifuges & Fluid Sensors
  • Optical Alignment Stages
  • Miniature Valves & Pumps
Automation & Robotics
  • Compact Robotic Joints
  • Linear Guide Rollers
  • Sensor Pulleys & Tensioners
  • Camera Gimbal Mechanisms
Electric & Motion Systems
  • Coreless & Brushless Micro Motors
  • High-Speed Encoders & Spindles
  • Miniature Fans & Blowers
  • Precision Gear Trains
Consumer & Hobby Electronics
  • 3D Printer Extruders & Fans
  • RC Car Drivetrains & Drone Motors
  • Portable Power Tools
  • Grooming Devices & Small Appliances

Key Performance Features

01. Ultra-Compact & Lightweight Design

Built to extra-light series dimensions (2×7×3.5 mm), this bearing offers exceptional space efficiency. Its slim profile and low mass make it ideal for high-speed rotors and compact assemblies where every gram counts.

02. Optimized for Low Friction & High Speed

The open configuration eliminates seal drag, enabling extremely low torque and allowing speeds up to 60,000 rpm. Precision raceway finishing and high-grade balls ensure minimal vibration and quiet operation even at maximum rotational speeds.

03. Maximum Lubrication Flexibility

Without seals or shields, the 602 Open can be lubricated with high-speed oils or greases tailored to specific operating conditions. This design facilitates easy maintenance and relubrication in applications where cleanliness is controlled and lubrication intervals are critical.

Technical Specifications

Bearing Type Single Row Deep Groove Ball Bearing
ISO Dimension Series 69 Series – Extra Light
Basic Designation 602
Suffix Open (No seals or shields)
Bore Diameter (d) 2 mm
Outer Diameter (D) 7 mm
Width (B) 3.5 mm
Material (Races & Balls) Chrome Steel (GCr15 / SAE 52100)
Precision Class Standard / P5 Grade Available
Cage Material Pressed Steel Cage (optional machined brass)
Dynamic Load Rating (Cʳ) 0.38 kN
Static Load Rating (C₀ʳ) 0.12 kN
Limiting Speed (Grease) 45,000 r/min
Limiting Speed (Oil) 60,000 r/min
Weight (approx.) 0.5 g

Interchange Part Numbers

Direct replacement for:

  • SKF: 602
  • NSK: 602
  • FAG: 602
  • NTN: 602
  • Timken: 602
  • NMB: R-720

Design & Configuration

The 602 Open is supplied as standard without shields or seals, offering the lowest possible friction and highest speed potential. For applications requiring protection against contamination, shielded versions (602-ZZ) or sealed versions (602-2RS) are also available.

"Choose the 602 Open for ultra-miniature, high-speed applications where low friction, easy lubrication, and quiet operation are the primary requirements."



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