MF74 2rs
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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MF74 2rs Bearing Product Overview & Core Advantages
The MF74 2RS is a miniature sealed ball bearing engineered for precision applications requiring compact dimensions and reliable performance. This single row deep groove ball bearing features integral rubber seals (2RS) for effective contamination exclusion. Its primary advantages include a compact 4 mm bore with a 2.5 mm width, making it ideal for space-constrained assemblies. The bearing is designed to handle radial loads primarily, offering a robust solution for small-scale mechanical systems demanding high reliability and long service life.
MF74 2rs Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| MF74 | Basic bearing designation indicating specific dimensions (4mm bore, 7mm OD) |
| 2RS | Double rubber contact seals on both sides providing superior protection against contaminants and moisture retention |
MF74 2rs Bearing Structural Features & Performance Benefits
Compact Design & High Precision: With ultra-compact dimensions of 4×7×2.5 mm, this bearing achieves significant space savings while maintaining ABEC1 precision class tolerances for smooth operation.
Effective Sealing System: The double rubber seals (2RS) provide excellent protection against dust, moisture, and other contaminants, extending bearing service life in challenging environments.
Optimized Load Capacity: Despite its miniature size, the bearing delivers a dynamic load rating of 49 lbf and static load rating of 19 lbf, supported by 8 precision chrome steel balls.
High-Speed Capability: The stainless steel cage and optimized internal geometry enable operation at limiting speeds up to 60,000 rpm, suitable for high-speed miniature applications.
Precision Internal Clearance: With MC3 radial clearance (0.002-0.013 mm), the bearing ensures minimal vibration and precise rotational characteristics.
MF74 2rs Bearing Typical Application Areas
- Small Precision Motors: Ideal for miniature DC motors, stepper motors, and coreless motors
- Medical Devices: Suitable for surgical tools, dental handpieces, and diagnostic equipment
- Office Automation: Used in printers, scanners, and copiers for precision paper handling mechanisms
- Consumer Electronics: Applications in small fans, disk drives, and miniature mechanical assemblies
- Instrumentation: Precision measuring devices, optical equipment, and laboratory instruments
- Robotics: Small joint assemblies and miniature automation components
