MR63ZZ 3x6x2.5mm Chrome Steel Miniature Deep Groove Ball Bearing

Product Overview

When your mechanical design demands reliable rotation in a space no larger than a grain of rice, the MR63ZZ miniature deep groove ball bearing delivers uncompromising performance. With exacting metric dimensions of 3 mm bore, 6 mm outer diameter, and 2.5 mm width, this bearing belongs to the MR series of miniature ball bearings, engineered specifically for applications where space is severely limited but smooth, high-speed rotation remains critical.

Key Features:

• Ultra-Compact Space
  The MR63ZZ is one of the smallest deep groove ball bearings available. Its miniature dimensions enable the miniaturization of 3D printers, drones, RC models, and precision instruments without sacrificing performance.

• High-Speed Capability
  Despite its tiny size, the MR63ZZ achieves a grease-lubricated limiting speed of 69,000–71,000 RPM. This makes it ideal for micro motors, high-speed spindles, and other applications where rotational velocity is critical.

• Effective Contamination Protection
  The double metal shields provide effective protection against dust and debris while maintaining the low friction required for high-speed operation. The shields also retain the factory-applied grease, reducing maintenance requirements.
• Low Noise and Low Vibration
  Precision grinding of raceways and quality ball manufacture result in smooth, quiet operation with minimal vibration. The low friction and quiet operation make the MR63ZZ ideal for noise-sensitive environments like consumer electronics.

Applications

The MR63ZZ miniature ball bearing is a versatile component found across numerous industries and applications:

• 3D Printers and Desktop Fabrication

• Drones and Quadcopters
• Remote Control (RC) Models
• Micro Motors and Small Electric Motors
• Precision Instruments and Measuring Devices
• Office Equipment and Consumer Electronics
• Model Making and Hobby Projects
• Miniature Fans and Cooling Systems