F681x
F Series Flanged Miniature Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
F681x
Basic Information
Bearing type
Ball
System of measurement
Metric
Construction
Single Row
Weight
0.12 g
Tolerance class
ABEC1
Seal type
Open
For load direction
Radial
Main Dimensions
Bore diameter
1.5 mm
Bore diameter tolerance
-0.008mm to 0
Outside diameter
4 mm
Outside diameter tolerance
-0.008mm to 0
Width
1.2 mm
Width tolerance
-0.12mm to 0
Inner Ring Dimensions
Inner ring type
Standard
Outer Ring Dimensions
Flange outer diameter
5 mm
Flange thickness
0.4 mm
Ball & Washer Dimensions
Ball diameter
0.6 mm
Ball quantity
7
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
21 lbf
Radial static load rating
6 lbf
Limiting speed
100 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:
$ 16.17
/ each
In Stock
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F681x Bearing Product Overview & Core Advantages
The F681x is a miniature deep groove ball bearing designed for ultra-compact applications requiring high precision and reliable performance. As a single row radial ball bearing with an open design, it excels in handling moderate radial loads while operating at high speeds. Its exceptionally small dimensions (1.5mm bore, 4mm OD) and low weight (0.12g) make it ideal for space-constrained assemblies. Manufactured to ABEC1 precision tolerances, this bearing ensures consistent operation and is an essential component for devices demanding miniaturization and accuracy.
F681x Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| F681x | Standard model number for this miniature bearing series, defining the core dimensions (1.5mm bore, 4mm OD, 1.2mm width). |
| Open | No integral seals or shields, allowing for higher limiting speeds and easy re-lubrication, but requiring a clean operating environment. |
| MC3 | Specifies the radial internal clearance group (0.002mm to 0.013mm), optimized for general operating conditions. |
F681x Bearing Structural Features & Performance Benefits
- High-Speed Capability: The combination of an open design, a lightweight stainless steel cage, and seven precision balls enables a high limiting speed of 100,000 rpm, making it a true high-speed bearing.
- Robust Construction: Components made from chrome steel (rings and balls) provide excellent wear resistance and durability, supporting a radial dynamic load rating of 21 lbf.
- Precision & Stability: Manufactured to ABEC1 tolerance class with controlled radial internal clearance, ensuring smooth, low-vibration, and precise rotation.
- Compact & Lightweight: With a width of only 1.2mm and a weight of 0.12g, it is engineered for applications where minimizing size and mass is critical.
F681x Bearing Typical Application Areas
- Small Precision Motors: Ideal for spindle support in miniature DC motors and stepper motors.
- Medical Devices: Used in surgical hand tools, dental drills, and miniature pumps.
- Office Automation: Critical component in laser printer scanners, small fans, and precision gearboxes.
- Instrumentation: Suitable for encoders, gyroscopes, and other sensitive measuring devices.
- Consumer Electronics: Found in miniature drones, high-performance computer cooling fans, and small robotic actuators.
