MF74
MF Series Flanged Miniature Bearings
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Part No.
Part No.
MF74
Basic Information
Bearing type
Ball
System of measurement
Metric
Construction
Single Row
Weight
0.3 g
Tolerance class
ABEC1
Seal type
Open
For load direction
Radial
Main Dimensions
Bore diameter
4 mm
Bore diameter tolerance
-0.008mm to 0
Outside diameter
7 mm
Outside diameter tolerance
-0.008mm to 0
Width
2 mm
Width tolerance
-0.12mm to 0
Inner Ring Dimensions
Inner ring type
Standard
Outer Ring Dimensions
Flange outer diameter
8.2 mm
Flange thickness
0.6 mm
Ball & Washer Dimensions
Ball diameter
1 mm
Ball quantity
8
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
59 lbf
Radial static load rating
21 lbf
Limiting speed
60 X 1000 rpm
Lubrication
Required
Radial internal clearance
0.002mm to 0.013mm
Radial internal clearance
MC3
Materials
Ring material
Chrome Steel
Ball material
Chrome Steel
Cage material
Stainless Steel
Environment & Compliance
REACH
Compliant
ROHS
Compliant
Technical Drawings
No drawings available at the moment, will be launched soon
Price:
$ 1.32
/ each
In Stock
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MF74 Bearing Product Overview & Core Advantages
The MF74 is a miniature metric ball bearing designed for precision applications requiring compact dimensions and reliable performance. As a single row deep groove ball bearing with an open design, it excels in handling radial loads efficiently. Its small footprint, with a 4 mm bore and 7 mm outside diameter, makes it ideal for space-constrained assemblies. Manufactured to ABEC1 precision tolerances, this bearing offers a cost-effective solution for high-speed operation up to 60,000 rpm, ensuring smooth rotation and long service life in demanding environments.
MF74 Bearing Model Code Explained, Specifications & Naming Convention
| Feature | Code/Value | Technical Significance |
|---|---|---|
| Seal Type | Open | No integral seals; allows for custom lubrication schemes and minimizes friction for high-speed applications. |
| Tolerance Class | ABEC1 | Defines standard precision levels for bore, OD, and width tolerances, ensuring consistent performance. |
| Internal Clearance | MC3 (0.002mm to 0.013mm) | A radial internal clearance range suitable for most general applications, accommodating thermal expansion. |
MF74 Bearing Structural Features & Performance Benefits
- Deep Groove Raceway & Single Row Design: Optimized for carrying radial loads, providing stable operation and low rotational torque.
- High-Grade Material Construction: Rings and balls made from Chrome Steel offer excellent wear resistance and durability. The Stainless Steel cage provides superior corrosion resistance and cage integrity at high speeds.
- Precision Engineering: Manufactured to strict ABEC1 tolerances and controlled internal clearance for consistent, reliable performance and smooth running.
- High-Speed Capability: The open design and stainless steel cage enable a limiting speed of 60,000 rpm, making it suitable for demanding rotational applications.
- Flanged Outer Ring: The integrated flange (8.2 mm OD) facilitates secure and simplified mounting, ensuring precise axial location within the housing.
MF74 Bearing Typical Application Areas
- Small Precision Motors: Ideal for spindle support in miniature DC motors and stepper motors.
- Medical Devices & Instrumentation: Used in surgical handpieces, dental tools, and laboratory equipment requiring quiet, precise motion.
- Office Automation Equipment: Critical components in printers, scanners, and copiers for paper feed and roller mechanisms.
- Robotics & Automation: Suitable for joints, guides, and small actuators in compact robotic systems.
- Consumer Electronics: Found in small fans, drones, and various portable electronic devices.
