• Coreless Micro DC Motors
• Tiny Vibration Motors
• Small Sensor Rotors
• Miniature Gearmotor Output Shafts

• Optical Encoders & Sensors
• Laser Diode & Lens Adjusters
• Laboratory & Medical Micro-Pumps
• Telescope Focus Drives

• High-End Watch Movements
• Precision RC Model Parts
• Small Automated Valves
• Model Aircraft Servos

• Small Cooling Fans for Electronics
• Printer/Scanner Carriage Guides
• Data Drive Spindle Motors
• Cash Dispenser Mechanisms

01. Design & Protection

The double, non-contact pressed steel shields offer robust dual-side protection against dust and particulates. This design effectively seals in lubrication, extends service life, and ensures minimal friction for sensitive, high-speed applications.

02. Ultra-Compact Design (Extra Light Series)

The extra light series design achieves an extremely small footprint, providing an optimal balance between performance and minimal space occupancy. Its ultra-compact dimensions are engineered for mechanisms with severe size constraints.

03. High-Speed & Smooth Operation

Manufactured to fine precision tolerances, with availability in higher grades (up to P5 precision grades). Its optimized internal geometry ensures exceptionally smooth, quiet, and stable rotation with minimal vibration, perfect for sensitive electronics and precision devices.

Interchange Part Numbers

Direct replacement for:

• SKF: 624-2Z
• NSK: 624 ZZ
• FAG: 624 ZZ
• NMB: MR84ZZ
• NTN: 624ZZ

Design & Configuration

The 624-ZZ is equipped with double pressed steel shields as standard. For applications requiring protection against moisture or finer contaminants, configurations with double rubber contact seals (624-2RS) are available as an alternative.

"For the most compact devices requiring dust protection, such as miniature fans or micro-encoders, the 624-ZZ is the ideal solution."