SF682
SF Series Stainless Steel Flanged Miniature Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
SF682
Basic Information
Bearing type
Ball
System of measurement
Metric
Construction
Single Row
Weight
0.19 g
Tolerance class
ABEC1
Seal type
Open
For load direction
Radial
Main Dimensions
Bore diameter
2 mm
Bore diameter tolerance
-0.008mm to 0
Outside diameter
5 mm
Outside diameter tolerance
-0.008mm to 0
Width
1.5 mm
Width tolerance
-0.12mm to 0
Inner Ring Dimensions
Inner ring type
Standard
Outer Ring Dimensions
Flange outer diameter
6.1 mm
Flange thickness
0.5 mm
Ball & Washer Dimensions
Ball diameter
0.8 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
0.002mm to 0.013mm
Radial internal clearance
MC3
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:
$ 3
/ each
In Stock
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SF682 Bearing Product Overview & Core Advantages
The SF682 is a miniature single row deep groove ball bearing designed for precision applications requiring compact dimensions and reliable performance. Engineered with stainless steel construction throughout (rings, balls, and cage), it offers excellent corrosion resistance. This bearing is optimized for high-speed operation with a limiting speed of 76,500 rpm and is capable of handling radial loads primarily. Its small size (2mm bore, 5mm OD) and lightweight (0.19g) make it ideal for space-constrained, high-precision assemblies demanding smooth rotation and long service life.
SF682 Bearing Model Code Explained, Specifications & Naming Convention
| Code Element | Technical Meaning |
|---|---|
| SF682 | Basic bearing model number, defining the core dimensions (2mm bore, 5mm OD, 1.5mm width). |
| Open (Seal Type) | The bearing is unsealed, allowing for custom lubrication schemes but requiring a clean operating environment. |
| ABEC1 | Specifies the precision class, indicating standard running accuracy and tolerance for general purpose applications. |
| MC3 | Denotes the radial internal clearance group (0.002mm to 0.013mm), suitable for applications with moderate temperature variations. |
SF682 Bearing Structural Features & Performance Benefits
- Deep Groove Raceway & Single Row Design: The deep groove geometry enables efficient handling of radial loads and moderate axial loads in both directions, providing versatile load capacity in a compact form factor.
- All-Stainless-Steel Construction: Components made entirely from stainless steel offer superior corrosion resistance and are suitable for applications exposed to moisture or harsh environments, while also being ROHS and REACH compliant.
- High-Speed Capability: The combination of a stainless steel cage, six precision balls, and optimized internal geometry allows for a very high limiting speed of 76,500 rpm, making it an excellent choice for high-speed miniature spindles and motors.
- Precision Tolerances: Manufactured to ABEC1 tolerance class with tight bore and outside diameter tolerances, ensuring consistent performance, smooth operation, and ease of installation in precision mechanisms.
- Flanged Outer Ring: The integrated flange (6.1mm OD) simplifies axial location and mounting, providing secure positioning within a housing and reducing assembly complexity.
SF682 Bearing Typical Application Areas
- Small Precision Motors: Ideal for spindle support in miniature DC motors, stepper motors, and coreless motors.
- Medical and Dental Devices: Used in handheld surgical tools, dental handpieces, and miniature pumps due to their compact size and corrosion resistance.
- Instrumentation and Gauges: Supports rotating components in precision measuring instruments, encoders, and sensors.
- Office Automation Equipment: Found in scanners, printers, and small fans where reliable, high-speed rotation is critical.
- Robotics and RC Models: Provides smooth, low-friction rotation in small joints, gears, and drive systems.
