• Small DC Motor Shafts

• Micro Fan and Blower Motors
• Miniature Servo and Actuator Ends
• Encoder and Sensor Rotors

• Medical and Dental Handpiece Drives
• Optical Instrument Focusing Adjustments
• Gauges and Meter Movements
• Laboratory Equipment Axles

• RC Model Vehicle Drivetrains

• Small Appliance and Tool Mechanisms
• Camera Lens Zoom/Autofocus Modules
• Office Machine Actuators (Printers, Scanners)

• Textile and Packaging Machine Guides
• Feed Roller and Spindle Supports
• Valve Control and Solenoid Mechanisms
• Conveyor Guide Rollers

01. Precision in a Compact Size

The miniature series design offers a robust yet space-saving solution with reliable radial load capacity for its size. Manufactured from high-carbon chrome steel, it ensures good durability and consistent performance in precision applications.

02. Integral Shield Protection

Features double metal shields (ZZ) as standard, providing effective protection against dust and particulate ingress while maintaining low rotational torque. This sealed-for-life design is ideal for applications where maintenance is impractical.

03. Smooth High-Speed Operation

Manufactured to standard miniature bearing tolerances. The precision-ground raceways and balls ensure smooth, low-vibration, and quiet rotation, enabling efficient performance even at high rotational speeds.

Interchange Part Numbers

Direct replacement for:

• Generic: MR137ZZ
• NSK: MR137ZZ

Design & Configuration

The MR137-ZZ comes as a ready-to-install, grease-lubricated bearing equipped with double metal contact shields (ZZ). This offers a robust, maintenance-free solution with fundamental protection against dust and dry debris. Alternative configurations, including different sealing options or open designs, are available upon request for specialized applications.

"For small precision drives, sensitive instruments, and compact mechanisms, the MR137-ZZ offers a dependable, shielded miniature bearing solution. Its standard ZZ shields help maintain consistent operation where preventing contamination ingress supports reliable long-term function."