MF128
MF Series Flanged Miniature Bearings
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Basic Information
Main Dimensions
Inner Ring Dimensions
Outer Ring Dimensions
Ball & Washer Dimensions
Performance
Materials
Environment & Compliance
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MF128 Bearing Product Overview & Core Advantages
The MF128 is a metric single row deep groove ball bearing designed for compact applications requiring reliable radial load capacity. Featuring an open design with ABEC1 precision tolerance, this bearing delivers consistent performance in space-constrained environments. Its chrome steel construction provides excellent durability while maintaining cost-effectiveness for general industrial applications.
Model Code Technical Breakdown
| Code Element | Technical Specification |
| MF128 | Basic bearing designation with 8mm bore diameter |
| Open Design | No seals or shields for maximum speed capability |
| MC3 Clearance | Radial internal clearance of 0.002-0.013mm |
MF128 Bearing Structural Features & Performance Benefits
Compact Design Excellence: With an ultra-thin 2.5mm width and integrated flange (13.2mm outer diameter), the MF128 provides exceptional space savings while maintaining structural integrity.
Optimized Load Capacity: The single row design with 12 precision balls (1.2mm diameter) delivers reliable radial dynamic load rating of 104 lbf and static rating of 49 lbf for consistent performance under load.
High-Speed Capability: Featuring stainless steel cage construction and optimized ball complement, this bearing achieves a limiting speed of 40,000 rpm, making it suitable for high-rotation applications.
Precision Engineering: Manufactured to ABEC1 tolerance class with strict dimensional controls (bore: -0.008mm to 0, OD: -0.008mm to 0) ensuring reliable fit and performance in precision assemblies.
MF128 Bearing Typical Application Areas
- Small Precision Motors: Ideal for miniature DC motors and stepper motors requiring compact bearing solutions
- Medical Devices: Suitable for surgical instruments, dental handpieces, and diagnostic equipment
- Office Automation: Perfect for printers, scanners, and copiers where space constraints are critical
- Robotics & Automation: Used in small robotic joints, actuators, and precision positioning systems
- Consumer Electronics: Applications in small fans, optical drives, and portable devices
