MF84
MF Series Flanged Miniature Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
MF84
Basic Information
Bearing type
Ball
System of measurement
Metric
Construction
Single Row
Weight
0.47 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
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
1.2 mm
Ball quantity
7
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
76 lbf
Radial static load rating
25 lbf
Limiting speed
56 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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MF84 Bearing Product Overview & Core Advantages
The MF84 is a metric miniature ball bearing designed for applications requiring compact size and reliable performance. As a single row deep groove ball bearing, it is optimized to carry primarily radial loads. Its construction ensures smooth operation and is suitable for high-speed scenarios, with a limiting speed of 56,000 rpm. Manufactured to ABEC1 precision class, it offers a cost-effective solution for applications demanding consistent performance and dimensional stability.
MF84 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| MF84 | Basic model number denoting a specific miniature bearing series with a 4mm bore and 8mm outside diameter. |
| Open (Seal Type) | The bearing is unsealed, allowing for custom lubrication schemes but requiring a clean operating environment. |
| MC3 | Specifies the radial internal clearance group, optimized for standard operating conditions. |
MF84 Bearing Structural Features & Performance Benefits
- High-Speed Capability: The stainless steel cage and optimized internal geometry contribute to a high limiting speed of 56,000 rpm, making it an excellent high-speed bearing for miniature applications.
- Radial Load Capacity: The single row deep groove raceway is designed to efficiently support radial loads, with a dynamic load rating of 76 lbf.
- Precision & Stability: Manufactured to ABEC1 tolerance class with strict bore and OD tolerances, ensuring reliable performance and ease of installation in precision assemblies.
- Compact & Lightweight: With dimensions of 4x8x2 mm and a weight of only 0.47 g, it is ideal for space-constrained and weight-sensitive designs.
- Material Durability: Components made from chrome steel (rings and balls) offer high hardness and wear resistance.
MF84 Bearing Typical Application Areas
- Small DC Motors and Spindle Drives
- Precision Instruments and Optical Encoders
- Office Automation Equipment (e.g., printers, scanners)
- Medical Devices and Dental Handpieces
- Robotics and Miniature Gearboxes
- Radio-Controlled Models and Drones
