• Miniature DC Motor Spindles

• Micro Vibration Motor Drives
• Small Stepper Motor Axles
• Encoder Disc Support Bearings

• Optical Lens Focusing Mechanisms
• Fiber Optic Alignment Devices
• Laboratory Sample Handling Equipment
• High-Frequency Sensor Rotors

• Small Cooling Fan Motors (e.g., for chipsets)

• Precision Potentiometer and Trimmer Shafts
• Miniature Valve Actuators
• Consumer Electronics Moving Parts

• High-Performance RC Model Drivetrain
• Small Drone Motor Bearings
• Watchmaking and Horology Tools
• Scientific Instrumentation Guides

01. Exceptional Compactness & Precision

The micro-series design delivers essential bearing functionality in one of the smallest standard form factors, with reliable radial load capacity for its size. Manufactured from high-grade chrome steel, it ensures dimensional stability and consistent performance in precision applications.

02. Factory-Installed Shielded Protection

Comes standard with double metal shields (ZZ), providing a critical barrier against dust and fine particulate ingress. This design maintains very low rotational friction, making it ideal for maintenance-free, long-life applications.

03. Optimized for High-Speed Operation

Manufactured to fine tolerances standard for miniature bearings. The precision-ground components ensure exceptionally smooth, low-vibration, and quiet rotation, enabling reliable performance at very high rotational speeds.

Interchange Part Numbers

Direct replacement for:

• Generic: MR125ZZ
• NSK: MR125ZZ

Design & Configuration

The MR125-ZZ is supplied as a pre-lubricated and pre-shielded unit with double metal contact shields (ZZ). This configuration offers a sealed-for-life, maintenance-free solution with fundamental protection against contaminants. For prototype or special applications requiring an open design, custom orders may be available.

"For micro-motors, optical instruments, and any application where space is at an absolute premium, the MR125-ZZ provides a reliable, shielded bearing solution. Its ultra-compact size and integrated protection make it ideal for advanced miniaturized designs."