MR52 ZZ Ultra-Miniature Deep Groove Ball Bearing for Precision Micro Devices | 2×5×2.5 mm

• Coreless Micro DC Motors
• Tiny Drone Propeller Motors
• Miniature Vibration Motors
• Micro Linear Actuator Guides

• Surgical & Dental Handpiece Drives
• Laboratory Micro-Pumps & Analyzers
• Portable Diagnostic Device Rotors
• Insulin Pump Mechanisms

• Miniature Cooling Fans for CPUs/GPUs
• Smartwatch Haptic Vibration Motors
• High-Fidelity Turntable Spindles
• Precision RC Servo Motors

• Optical Encoder Discs
• Laser Diode Focusing Mechanisms
• Telescope or Microscope Fine Adjusters
• Sensor and Gauge Movements

01. Design for Miniaturization

The dual non-contact pressed steel shields provide essential protection in micro-environments where contamination is a risk, all while maintaining an absolute minimum cross-section. This design is pivotal for retaining lubrication and ensuring longevity in hard-to-access assemblies.

02. Ultra-Compact & Lightweight

As an ultra-miniature series bearing, the MR52-ZZ achieves an extreme reduction in size and mass. Its design prioritizes integration into products where reducing weight and volume is a primary engineering constraint, without compromising rotational integrity.

03. High-Speed & Low-Noise Operation

Manufactured to fine precision tolerances to ensure minimal vibration and audible noise. Its optimized internal geometry and high-quality steel construction enable stable, smooth rotation at very high rotational speeds, which is essential for sensitive micro-applications.

Interchange Part Numbers

Direct replacement for:

• NMB: MR52-ZZ

Design & Configuration

The MR52-ZZ is furnished with double pressed steel shields as standard, offering the best balance of protection and low torque for high-speed micro applications. For scenarios demanding complete isolation from fluids or finer contaminants, configurations with specialty seals may be available upon inquiry.

"For the most demanding micro-scale applications from life-saving medical tools to cutting-edge consumer tech, the MR52-ZZ delivers precision, protection, and performance where space is virtually nonexistent."