SF689zz
SF Series Stainless Steel Flanged Miniature Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
SF689zz
Basic Information
Bearing type
Ball
System of measurement
Metric
Construction
Single Row
Weight
4.87 g
Tolerance class
ABEC1
Seal type
Shielded
For load direction
Radial
Main Dimensions
Bore diameter
9 mm
Bore diameter tolerance
-0.008mm to 0
Outside diameter
17 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
19 mm
Flange thickness
1.1 mm
Ball & Washer Dimensions
Ball diameter
2 mm
Ball quantity
11
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
228 lbf
Radial static load rating
108 lbf
Limiting speed
32.4 X 1000 rpm
Lubrication
Required
Radial internal clearance
0.002mm to 0.013mm
Radial internal clearance
MC3
Materials
Ring material
Stainless Steel
Ball material
Stainless 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:
$ 1.59
/ each
In Stock
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SF689zz Bearing Product Overview & Core Advantages
The SF689zz is a single row deep groove ball bearing engineered for precision radial load applications. Constructed entirely from stainless steel (rings, balls, and cage), it offers excellent corrosion resistance. Its compact flanged design (19mm outer diameter) facilitates secure mounting and alignment. This bearing is characterized by its shielded construction, which protects against contamination, and its ABEC1 precision class, making it a reliable choice for applications demanding high reliability and long service life.
SF689zz Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| SF689 | The basic bearing designation, indicating a specific series with a 9mm bore, 17mm OD, and 5mm width. |
| zz | Denotes that the bearing is equipped with shields on both sides. This provides effective protection against solid contaminants while allowing for higher rotational speeds compared to contact seals. |
SF689zz Bearing Structural Features & Performance Benefits
- Robust Stainless Steel Construction: All critical components, including the rings, balls, and cage, are made from stainless steel, ensuring superior corrosion resistance and durability in harsh environments.
- Deep Groove Raceway & High-Capacity Design: The deep groove geometry allows the bearing to efficiently handle radial dynamic loads up to 228 lbf and is also capable of supporting moderate axial loads in both directions.
- High-Speed Capability: The combination of a stainless steel cage and non-contact shields contributes to a high limiting speed of 32,400 rpm, making it suitable for demanding high-speed applications.
- Integrated Flange: The flange (19mm OD) simplifies bearing mounting and positioning, enhancing assembly accuracy and stability in housings.
- Precision Performance: Manufactured to ABEC1 tolerance class with a controlled MC3 radial internal clearance, this bearing ensures smooth and quiet operation with minimal vibration.
SF689zz Bearing Typical Application Areas
- Precision Small Motors and Spindles
- Medical and Dental Handpieces
- Office Automation Equipment (e.g., printers, scanners)
- Radio-Controlled Models and Drones
- Instrumentation and Precision Gearboxes
- Food Processing and Packaging Machinery (where corrosion resistance is critical)
