F681
F Series Flanged Miniature Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
F681
Basic Information
Bearing type
Ball
System of measurement
Metric
Construction
Single Row
Weight
0.04 g
Tolerance class
ABEC1
Seal type
Open
For load direction
Radial
Main Dimensions
Bore diameter
1 mm
Bore diameter tolerance
-0.008mm to 0
Outside diameter
3 mm
Outside diameter tolerance
-0.008mm to 0
Width
1 mm
Width tolerance
-0.12mm to 0
Inner Ring Dimensions
Inner ring type
Standard
Outer Ring Dimensions
Flange outer diameter
3.8 mm
Flange thickness
0.3 mm
Ball & Washer Dimensions
Ball diameter
0.6 mm
Ball quantity
6
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
18 lbf
Radial static load rating
5 lbf
Limiting speed
130 X 1000 rpm
Lubrication
Required
Radial internal clearance
MC3
Radial internal clearance
0.002mm to 0.013mm
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:
$ 18.13
/ each
In Stock
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F681 Bearing Product Overview & Core Advantages
The F681 metric ball bearing is a single row deep groove ball bearing engineered for applications demanding compact size and reliable performance. Its open design and ABEC1 precision class make it suitable for high-speed operations up to 130,000 rpm. This bearing is designed to primarily handle radial loads with a dynamic load rating of 18 lbf, offering a robust solution in a minimal footprint with a bore of just 1 mm and an outside diameter of 3 mm. Manufactured from chrome steel for both rings and balls, it ensures durability and consistent operation within a temperature range of -30°C to 110°C.
F681 Bearing Model Code Explained, Specifications & Naming Convention
| Code Element | Technical Significance |
|---|---|
| F681 | Standard model number denoting the specific bearing dimensions (1x3x1mm). |
| Open (Seal Type) | No integral seals or shields, allowing for higher speeds and requiring external lubrication and protection from contaminants. |
| ABEC1 | Defines the precision tolerance class, suitable for many general-purpose applications. |
| MC3 | Specifies the radial internal clearance group (0.002mm to 0.013mm), optimized for general operating conditions. |
F681 Bearing Structural Features & Performance Benefits
- Compact and Lightweight Design: With dimensions of 1x3x1mm and a weight of only 0.04g, this bearing is ideal for applications where space and weight are critical constraints.
- High-Speed Capability: The combination of a stainless steel cage, six precision balls, and an open construction enables a limiting speed of 130,000 rpm, making it a capable high-speed bearing.
- Robust Load Handling: The single row deep groove construction is optimized to efficiently support radial loads, providing reliable performance under dynamic conditions.
- Material Integrity: The use of chrome steel for rings and balls ensures high hardness and wear resistance, contributing to a long service life.
F681 Bearing Typical Application Areas
This miniature ball bearing is commonly specified in:
- Small Precision Motors and stepper motors
- Medical Devices and dental handpieces
- Optical Encoders and instrumentation
- Small drones, RC models, and miniature gearboxes
- Office automation equipment and precision spindles
