SF689
SF Series Stainless Steel Flanged Miniature Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
SF689
Basic Information
Bearing type
Ball
System of measurement
Metric
Construction
Single Row
Weight
3.85 g
Tolerance class
ABEC1
Seal type
Open
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
4 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 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
MC3
Radial internal clearance
0.002mm to 0.013mm
Materials
Ring material
Stainless Steel
Ball material
Stainless Steel
Cage material
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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SF689 Bearing Product Overview & Core Advantages
The SF689 is a metric single row deep groove ball bearing engineered for high-performance applications requiring precision and reliability. Constructed entirely from stainless steel, it offers excellent corrosion resistance. Its compact design, with a 4 mm width, is ideal for space-constrained assemblies. This bearing is designed to primarily handle radial loads and is capable of operating at high limiting speeds up to 32,400 rpm, making it a robust solution for demanding environments.
SF689 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| SF689 | The base model number defining the bearing dimensions: 9 mm bore, 17 mm outside diameter, 4 mm width. |
| Open (Seal Type) | The bearing is unsealed, allowing for easy re-lubrication and optimal for high-speed applications where seal drag is a concern. |
| ABEC1 | Specifies the precision class, indicating standard tolerance levels suitable for a wide range of general applications. |
| MC3 | Denotes the radial internal clearance group (0.002mm to 0.013mm), optimized for general operating conditions. |
SF689 Bearing Structural Features & Performance Benefits
- High-Speed Capability: The combination of a stainless steel cage, 11 precision balls, and an open design minimizes friction and allows for a high limiting speed of 32,400 rpm, making it an effective high-speed bearing.
- Robust Load Capacity: The single row deep groove construction is optimized to support significant radial dynamic load ratings (228 lbf), providing reliable performance under stress.
- Corrosion Resistance & Durability: All components, including rings, balls, and cage, are manufactured from stainless steel, ensuring long service life in harsh or wash-down environments.
- Precision Engineering: Manufactured to ABEC1 tolerance standards with controlled internal clearance, ensuring consistent and smooth operation.
SF689 Bearing Typical Application Areas
This versatile ball bearing
Small Electric Motors and Gearboxes
Precision Instruments and Medical Devices
Office Automation Equipment (e.g., Printers, Scanners)
Radio Control Models and Drones
Food Processing and Packaging Machinery (benefiting from its stainless steel construction)
