• Small Belt Tensioners and Pulleys
• Pick-and-Place End Effectors
• Miniature Linear Guide Systems
• Camera Gimbal Rotation Axes

• Miniature Flow Meters and Sensors
• Handheld Laser Distance Measurers
• Laboratory Micro Centrifuges
• Dental Drill Handpieces

• Miniature Coreless DC Motors
• Cooling Fans for Electronics
• Precision Stepper Motors
• Vibration Motors (Haptic Feedback)

• 3D Printer Filament Extruders
• Copier and Printer Paper Feed Rollers
• Hard Drive Spindle Motors
• Model Aircraft Control Surfaces

01. Compact Footprint, Robust Performance

Built to the extra-light 69 series standard in a 3×9×5mm profile, this bearing offers a surprising load capacity relative to its minimal size. It is the premier choice for engineers facing severe radial space constraints.

02. Integral Contact Sealing

Equipped with non-removable rubber contact seals (2RS) on both sides, the 603-2RS provides a labyrinthine barrier against contaminants. This design effectively retains factory grease, excludes process debris, and supports extended service intervals in demanding environments.

03. High-Grade Precision for Smooth Rotation

Manufactured to stringent geometric tolerances, this bearing ensures exceptionally low vibration and noise levels. Its consistent internal clearance makes it suitable for sensitive equipment where smooth start-up and quiet running are non-negotiable.

Interchange Part Numbers

Direct replacement for:

• SKF: 603-2RS
• NSK: 603ZZ (for Shielded) / 603DDU (for Sealed)
• FAG: 603-2RS
• NTN: 603LLU
• Timken: 603-2RS
• NMB: R-930ZZ

Design & Configuration

The 603-2RS is supplied as standard with lithium-based grease lubrication and dual rubber contact seals. This configuration ensures the bearing remains "maintenance-free" for the life of the assembly, making it ideal for sealed-for-life applications. For scenarios where minimal rotational torque is prioritized over absolute contaminant exclusion, the double shield variant (603-ZZ) is also available.

"Selected by design engineers for its exceptionally small form factor and reliable sealing, the 603-2RS ensures consistent performance in compact electromechanical assemblies where access for re-lubrication is impossible and operational cleanliness is mandatory."