MF85
MF Series Flanged Miniature Bearings
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Part No.
Part No.
MF85
Basic Information
Bearing type
Ball
System of measurement
Metric
Construction
Single Row
Weight
0.33 g
Tolerance class
ABEC1
Seal type
Open
For load direction
Radial
Main Dimensions
Bore diameter
5 mm
Bore diameter tolerance
-0.008mm to 0
Outside diameter
8 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
9.2 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
22 lbf
Limiting speed
53 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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MF85 Bearing Product Overview & Core Advantages
The MF85 is a miniature deep groove ball bearing designed for applications requiring compact dimensions and reliable performance. This metric single row bearing features an open design, enabling high rotational speeds and simple lubrication access. Its primary advantage lies in its ability to efficiently support radial loads while maintaining a minimal cross-section, making it an ideal solution for space-constrained, high-precision mechanisms. Manufactured to ABEC1 precision standards, it offers consistent performance and is compliant with RoHS and REACH directives.
MF85 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| MF85 | Basic model number indicating a specific series of miniature flanged bearings. |
| Open | No seals or shields, allowing for high-speed operation and custom lubrication. |
| MC3 | Specifies the radial internal clearance group, optimized for general operating conditions. |
| ABEC1 | Defines the tolerance class, ensuring dimensional and running accuracy. |
MF85 Bearing Structural Features & Performance Benefits
- Compact & Lightweight Design: With a bore diameter of 5 mm, outside diameter of 8 mm, and a width of just 2 mm, this bearing is engineered for ultra-compact assemblies. The integrated flange (outer diameter 9.2 mm) facilitates secure mounting and alignment.
- High-Speed Capability: The open construction and stainless steel cage contribute to a high limiting speed of 53,000 rpm, making it suitable for demanding high-velocity applications.
- Robust Load Capacity: Manufactured from chrome steel for both rings and balls, the bearing provides a dynamic load rating of 59 lbf and a static load rating of 22 lbf, ensuring durability under radial stresses.
- Precision Engineering: The ABEC1 tolerance class and controlled radial internal clearance guarantee smooth, low-vibration operation, which is critical for sensitive instrumentation.
MF85 Bearing Typical Application Areas
This miniature flanged bearing is ideally suited for:
- Small Precision Motors: Including stepper motors and coreless DC motors.
- Medical Devices: Such as dental handpieces, surgical tools, and miniature pumps.
- Office Automation Equipment: Including printers, scanners, and small fans.
- Instrumentation and Gauges: Where compact size and reliable rotation are paramount.
- Robotics: Particularly in small joints and actuator assemblies.
