MF74zz
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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MF74zz Bearing Product Overview & Core Advantages
The MF74zz is a metric miniature ball bearing designed for precision applications requiring compact dimensions and reliable performance. This single row deep groove ball bearing features shielded construction for contaminant protection while maintaining excellent radial load capacity. With its miniature 4mm bore and compact 2.5mm width, it delivers optimal performance in space-constrained applications where precision and reliability are paramount.
MF74zz Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning | Performance Benefit |
| MF74 | Basic bearing designation with flanged outer ring | Simplifies mounting and axial location |
| zz | Double metal shields (both sides) | Provides effective contaminant exclusion while maintaining high-speed capability |
MF74zz Bearing Structural Features & Performance Benefits
Flanged Design: The integrated flange (8.2mm outer diameter) enables precise axial positioning and simplified mounting in housing structures, reducing assembly complexity and improving alignment accuracy.
Shielded Protection: Double stainless steel shields (300 series) effectively exclude contaminants while allowing higher limiting speeds compared to contact seals, supporting operation up to 60,000 rpm.
Precision Construction: Manufactured to ABEC1 tolerance class with MC3 radial clearance (0.002-0.013mm), ensuring consistent performance and smooth operation in precision applications.
High-Quality Materials: Chrome steel rings and balls combined with stainless steel cage provide excellent durability and corrosion resistance for extended service life.
MF74zz Bearing Typical Application Areas
- Small precision motors and miniature DC motors
- Medical devices and dental handpieces
- Office automation equipment including printers and scanners
- Instrumentation and measurement devices
- Robotics and small automation components
- Consumer electronics requiring miniature bearing solutions
