SF693zz
SF Series Stainless Steel Flanged Miniature Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
SF693zz
Basic Information
Bearing type
Ball
System of measurement
Metric
Construction
Single Row
Weight
0.94 g
Tolerance class
ABEC1
Seal type
Shielded
For load direction
Radial
Main Dimensions
Bore diameter
3 mm
Bore diameter tolerance
-0.008mm to 0
Outside diameter
8 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
9.5 mm
Flange thickness
0.9 mm
Ball & Washer Dimensions
Ball diameter
1.588 mm
Ball quantity
6
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
96 lbf
Radial static load rating
29 lbf
Limiting speed
54 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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SF693zz Bearing Product Overview & Core Advantages
The SF693zz is a miniature 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. This shielded bearing is pre-lubricated for immediate use and is designed to primarily handle radial loads. Its small footprint, with a 3mm bore and 8mm outside diameter, makes it ideal for space-constrained, high-speed mechanisms demanding consistent operation and long service life.
SF693zz Bearing Model Code Explained, Specifications & Naming Convention
| Suffix | Technical Meaning |
|---|---|
| SF693 | The base bearing number, indicating a specific miniature bearing series with a 3mm bore. |
| zz | Signifies that the bearing is equipped with shields on both sides (2Z). These non-contact shields protect the internal components from large particulate contamination while minimizing friction, contributing to the high limiting speed. |
SF693zz Bearing Structural Features & Performance Benefits
- Compact & Lightweight Design: With a width of just 4mm and a weight of only 0.94g, this bearing is perfect for miniaturized applications without sacrificing performance.
- Corrosion Resistance: All components, including rings, balls, cage, and shields, are made from stainless steel, ensuring reliable operation in humid or mildly corrosive environments.
- Contaminant Protection: The double-shielded (zz) design effectively retains lubrication and excludes larger contaminants, enhancing bearing life and reliability.
- High-Speed Capability: The combination of a stainless steel cage, six precision balls, and optimized internal geometry allows for a high limiting speed of 54,000 rpm.
- Precision Performance: Manufactured to ABEC1 tolerance class with a controlled radial internal clearance (MC3 group), ensuring smooth and quiet running.
SF693zz Bearing Typical Application Areas
This bearing is widely used in applications requiring small bearing dimensions and high-speed operation, including:
- Small DC Motors and Stepper Motors
- Precision Instruments and Optical Encoders
- Computer Cooling Fans
- Medical Devices and Dental Handpieces
- Radio-Control Models and Drones
- Office Automation Equipment
