F691x
F Series Flanged Miniature Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
F691x
Basic Information
Bearing type
Ball
System of measurement
Metric
Construction
Single Row
Weight
0.26 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
5 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
6.5 mm
Flange thickness
0.6 mm
Ball & Washer Dimensions
Ball diameter
1 mm
Ball quantity
6
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
32 lbf
Radial static load rating
9 lbf
Limiting speed
85 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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F691x Bearing Product Overview & Core Advantages
The F691x is a metric miniature ball bearing engineered for applications demanding compact size and reliable performance. As a single row deep groove ball bearing with an open design, it is optimized for high-speed operation and primarily handles radial loads. Its construction from high-grade chrome steel and a stainless steel cage ensures durability and consistent operation. This bearing is an ideal solution for precision instruments and small machinery where space is at a premium and high rotational speeds are required.
F691x Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| F691x | Manufacturer's series designation for a specific range of miniature ball bearings. |
| Open | No seals or shields, allowing for higher speeds and easy re-lubrication. Requires a clean operating environment. |
| ABEC1 | Standard tolerance class, indicating standard precision levels for runout and dimensions. |
| MC3 | Specifies the radial internal clearance group, which is greater than normal (C3), suitable for applications with thermal expansion. |
F691x Bearing Structural Features & Performance Benefits
- Compact & Lightweight Design: With an ultra-small bore diameter of 1.5 mm and an outside diameter of 5 mm, this bearing is designed for the most space-constrained applications. Its minimal weight of 0.26 g reduces inertia.
- High-Speed Capability: The open construction and stainless steel cage contribute to a high limiting speed of 85,000 rpm, making it an excellent high-speed bearing.
- Robust Load Handling: The deep groove raceway and chrome steel components provide reliable support for radial dynamic and static load ratings.
- Precision Engineering: Manufactured to ABEC1 tolerances, it ensures smooth and consistent operation, which is critical for precision devices.
- Wide Temperature Range: Operates effectively within a temperature range of -30°C to 110°C, offering versatility for various environments.
F691x Bearing Typical Application Areas
This miniature ball bearing is ideally suited for:
- Small Precision Motors (e.g., in drones, RC models)
- Medical Devices and Instrumentation (e.g., surgical hand tools, dental drills)
- Office Automation Equipment (e.g., small printers, scanners)
- High-Speed Spindles in miniature machining tools
- Various precision instruments and small mechanical assemblies requiring reliable, high-speed rotation.
