• Coreless Micro DC Motors
• Tiny Drone Propeller Motors
• Vibration Motors in Electronics
• Small Sensor Actuators

• Optical Encoder Discs & Scanners
• Laser Diode Mounts & Adjusters
• Laboratory Sample Stirrers
• Medical Diagnostic Device Rotors

• High-End Watch Mechanisms
• Precision Model Making (RC)
• Small Automated Camera Lenses
• Telescope Focus Mechanisms

• Cooling Fans for Slim Servers
• Spindle Motors in Slim Optical Drives
• Guide Rollers in Printers/Scanners
• Tape Drive Guide Rollers

01. Design & Protection

The double, non-contact pressed steel shields offer reliable protection from both axial sides against dust and larger particles. This design is crucial for retaining lubrication in the bearing's compact internal space while contributing minimally to the overall thickness and rotational torque.

02. Ultra-Thin Section Design

The defining feature of this bearing is its minimal width (4mm) relative to its bore and outer diameter, achieved by the 60 Series' extra-thin cross-section. This allows for integration into incredibly slim assemblies and devices where standard bearings cannot fit.

03. High-Speed & Smooth Operation

Manufactured to fine precision tolerances (up to P5 precision grades). Its optimized internal geometry ensures low friction and vibration, supporting stable and quiet rotation essential for sensitive applications like small fans, encoder discs, and precision pointing mechanisms.

Interchange Part Numbers

Direct replacement for:

• SKF: 623-2Z
• NSK: 623 ZZ
• FAG: 623 ZZ
• NMB: MR63ZZ
• NTN: 623ZZ

Design & Configuration

The 623 ZZ is equipped with double pressed steel shields as standard. For applications requiring a higher degree of sealing, versions with rubber seals (623-2RS) are available, though they may slightly increase the frictional torque.

"For ultra-slim devices like miniature drones or high-speed micro spindles, the 623 ZZ provides the necessary performance in a minimal axial package."