MF85zz
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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Product Overview and Core Advantages
The MF85zz is a miniature shielded ball bearing designed for precision applications requiring compact dimensions and reliable performance. As a single row deep groove ball bearing, it excels at handling radial loads efficiently. Its shielded design provides contaminant protection while maintaining low friction, making it suitable for high-speed operation. This bearing is characterized by its small bore diameter of 5mm and compact cross-section, offering an optimal solution for space-constrained assemblies demanding ABEC1 precision and consistent operation.
MF85zz Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| MF85 | Bearing series designation with 5mm bore diameter and 8mm outside diameter |
| zz | Double shielded construction on both sides for enhanced contaminant protection |
Structural Features and Performance Benefits
Compact Design and High Precision: With dimensions of 5mm bore × 8mm OD × 2.5mm width, this bearing delivers maximum performance in minimal space. The ABEC1 tolerance class ensures consistent running accuracy and smooth operation.
Enhanced Contamination Protection: The double stainless steel shields (zz) effectively retain lubrication while excluding contaminants, extending service life in challenging environments.
Optimized Speed Capability: Featuring a stainless steel cage and precision-ground chrome steel components, the bearing achieves a limiting speed of 53,000 rpm, making it suitable for high-speed applications.
Radial Load Capacity: Engineered with 9 precision balls of 0.8mm diameter, the bearing provides a dynamic load rating of 42 lbf and static load rating of 16 lbf for reliable performance under radial stresses.
MF85zz Bearing Typical Application Areas
- Small DC motors and miniature motor assemblies
- Precision instruments and laboratory equipment
- Office automation devices including printers and scanners
- Medical devices and dental handpieces
- Robotic joints and miniature mechanical assemblies
- Computer cooling fans and small pump systems
