693 ZZ Ultra-Miniature Deep Groove Ball Bearing for High-Speed Micro Motors | 3×8×3 mm

• Coreless Micro DC Motors
• Tiny Vibration Motors
• Small Sensor Actuators
• Micro Gearmotor Outputs

• Optical Encoder Discs & Scanners
• Laser Diode & Lens Positioning
• Laboratory Micro-Pumps & Stirrers
• Medical Diagnostic Device Rotors

• Cooling Fans for Slim Electronics
• Hard Drive/SSD Spindle Motors
• Printer/Scanner Carriage Guides
• Data Tape Drive Guides

• Micro RC Car & Drone Motors
• High-Precision Model Making
• Small Camera Auto-Focus Gears
• Watch & Clock Mechanisms

01. Design & Protection

The dual non-contact pressed steel shields offer reliable two-sided protection in environments with airborne dust. This shield design is crucial for retaining lubrication within the bearing's tiny internal space while adding negligible friction, which is vital for low-torque micro applications.

02. Ultra-Compact & Lightweight

As part of the extra-thin series, the 693-ZZ achieves an exceptionally small cross-section, providing reliable performance in the absolute minimum of axial and radial space. Its minimal weight and size are engineered for devices where every millimeter and gram counts.

03. High-Speed & Smooth Operation

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

Interchange Part Numbers

Direct replacement for:

• SKF: 693-2Z
• NSK: 693 ZZ
• FAG: 693-ZZ
• NMB: MR83ZZ
• NTN: 693ZZ

Design & Configuration

The 693-ZZ is supplied with double pressed steel shields as the standard configuration. For applications requiring protection against moisture or very fine dust, alternative versions with contact rubber seals (693-2RS) can be selected, though they introduce slightly higher starting torque.

"For the most compact devices such as micro drone motors, miniature cooling fans, or optical encoder shafts, the 693-ZZ provides essential performance and protection in an ultra-small package.