SF691xzz
SF Series Stainless Steel Flanged Miniature Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
SF691xzz
Basic Information
Bearing type
Ball
System of measurement
Metric
Construction
Single Row
Weight
0.33 g
Tolerance class
ABEC1
Seal type
Shielded
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
2.6 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
0.8 mm
Ball & Washer Dimensions
Ball diameter
1 mm
Ball quantity
6
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
29 lbf
Radial static load rating
8 lbf
Limiting speed
76.5 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
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:
$ 19.4
/ each
In Stock
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SF691xzz Bearing Product Overview & Core Advantages
The SF691xzz is a miniature metric single row deep groove ball bearing engineered for precision applications requiring compact design and reliable performance. Constructed entirely from stainless steel, it offers excellent corrosion resistance. Its shielded design provides effective contamination protection while maintaining low running torque. This bearing is ideal for applications demanding high limiting speeds and operation within a wide temperature range, making it a robust solution for compact, high-performance mechanisms.
SF691xzz Bearing Model Code Explained, Specifications & Naming Convention
| Suffix | Technical Meaning |
|---|---|
| SF691 | Standard bearing series designation with a 1.5mm bore and 5mm outside diameter. |
| x | Placeholder for specific internal design variations within the series. |
| zz | Indicates the bearing is shielded on both sides (2Z). This provides superior protection against dust and other contaminants, enhancing bearing life in unclean environments. |
SF691xzz Bearing Structural Features & Performance Benefits
- High-Speed Capability: The combination of a stainless steel cage, precision-ground stainless steel balls, and an optimized internal geometry enables a high limiting speed of 76,500 rpm, suitable for demanding miniature drive systems.
- Radial Load Capacity: The deep groove raceway and robust single row design are engineered to efficiently support significant radial dynamic loads relative to its miniature bearing dimensions.
- Corrosion Resistance & Longevity: Manufactured entirely from stainless steel (rings, balls, cage, and shield), this bearing is inherently resistant to rust and corrosion, ensuring reliable performance and long service life in harsh or washdown environments.
- Precision & Stability: Built to ABEC1 tolerance class with a controlled MC3 radial internal clearance, this precision bearing ensures smooth, consistent, and low-vibration operation.
SF691xzz Bearing Typical Application Areas
This miniature deep groove ball bearing is ideally suited for:
- Small Precision Motors: Used in stepper motors, coreless motors, and miniature DC motors.
- Medical Devices & Instrumentation: Ideal for surgical handpieces, dental tools, and sensitive analytical equipment.
- Office Automation Equipment: Critical component in printers, scanners, and small cooling fans.
- Robotics & RC Models: Provides reliable support in miniature gearboxes, joints, and drive wheels.
- Precision Mechanical Systems: Used in encoders, gauges, and other instruments requiring high-speed, low-friction rotation.
