F688zz
F Series Flanged Miniature Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
F688zz
Basic Information
Bearing type
Ball
System of measurement
Metric
Construction
Single Row
Weight
4.51 g
Tolerance class
ABEC1
Seal type
Shielded
For load direction
Radial
Main Dimensions
Bore diameter
8 mm
Bore diameter tolerance
-0.008mm to 0
Outside diameter
16 mm
Outside diameter tolerance
-0.008mm to 0
Width
5 mm
Width tolerance
-0.12mm to 0
Inner Ring Dimensions
Inner ring type
Standard
Outer Ring Dimensions
Flange outer diameter
18 mm
Flange thickness
1.1 mm
Ball & Washer Dimensions
Ball diameter
2 mm
Ball quantity
10
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
239 lbf
Radial static load rating
107 lbf
Limiting speed
36 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
Shield material
300 Series 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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F688zz Bearing Product Overview & Core Advantages
The F688zz is a metric miniature ball bearing designed for precision applications requiring compact dimensions and reliable performance. As a single row deep groove ball bearing, it is optimized to handle primarily radial loads. Its shielded (ZZ) construction protects against contamination while maintaining low friction, making it suitable for high-speed operation. This bearing is characterized by its small bore diameter of 8mm and overall compact design, offering a robust solution for applications where space is limited and operational reliability is critical.
F688zz Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| F | Manufacturer's series prefix for miniature bearings. |
| 68 | Indicates the bearing series, defining the cross-sectional dimensions. |
| 8 | Bore diameter code: 8 mm. |
| ZZ | Bearing is shielded on both sides with 300 Series Stainless Steel. This provides effective protection against contaminants while allowing for high-speed operation. |
F688zz Bearing Structural Features & Performance Benefits
- High-Speed Capability: The combination of a stainless steel cage, precision-ground chrome steel components, and optimized internal geometry enables a high limiting speed of 36,000 rpm.
- Robust Construction: Manufactured from high-grade chrome steel for rings and balls, ensuring high durability and wear resistance under radial dynamic load.
- Contamination Protection: The non-contact ZZ shields on both sides help retain lubrication and exclude larger particulate contaminants, enhancing bearing life in demanding environments.
- Precision Performance: Built to ABEC1 tolerance class with a controlled radial internal clearance (MC3 group), ensuring consistent and smooth running for precision applications.
- Compact & Lightweight: With a width of only 5mm and a weight of 4.51g, it is ideal for applications with severe space and weight constraints.
F688zz Bearing Typical Application Areas
- Small Electric Motors and Precision Gearboxes
- Medical Devices and Dental Handpieces
- Office Automation Equipment (Printers, Scanners)
- Instrumentation and Precision Rotary Stages
- Small Fans and Cooling Modules
- Robotics and RC Models
