SF682 2rs
SF Series Stainless Steel Flanged Miniature Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
SF682 2rs
Basic Information
Bearing type
Ball
System of measurement
Metric
Construction
Single Row
Weight
0.19 g
Tolerance class
ABEC1
Seal type
Sealed
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
2.3 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
0.6 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
Shield material
Nitrile Rubber
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 2rs Bearing Product Overview & Core Advantages
The SF682 2RS is a miniature sealed deep groove ball bearing engineered for precision applications requiring compact dimensions and reliable performance. This metric single row bearing features integrated rubber seals (2RS) that provide excellent contamination protection while retaining lubrication. Constructed entirely from stainless steel (rings, balls, and cage), it offers superior corrosion resistance. Its primary advantages include the ability to handle radial loads efficiently, compact 2mm bore design for space-constrained assemblies, and long service life due to its sealed, pre-lubricated construction, making it ideal for high-reliability miniature mechanisms.
SF682 2rs Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| SF682 | Basic bearing designation indicating the specific size series (2mm bore, 5mm OD). |
| 2RS | Signifies contact rubber seals on both sides. This provides superior contamination exclusion and effective grease retention compared to non-contact shields. |
SF682 2rs Bearing Structural Features & Performance Benefits
- Robust Sealed Design: The dual Nitrile Rubber (NBR) contact seals (2RS) effectively shield the internal components from dust, moisture, and other contaminants, while retaining the necessary lubrication, significantly enhancing operational reliability and service life in harsh environments.
- High Corrosion Resistance: Manufactured with stainless steel for all critical components (rings, balls, and cage), this bearing is ideal for applications exposed to moisture, chemicals, or requiring frequent washdowns.
- Precision & Smooth Operation: Built to ABEC1 tolerance class with a controlled radial internal clearance (MC3 group: 0.002mm to 0.013mm), ensuring consistent running accuracy and low noise and vibration levels.
- Optimized Load Capacity: Despite its miniature size, the deep groove raceway and 6 stainless steel balls enable a dynamic load rating of 29 lbf and a static load rating of 8 lbf, suitable for various radial load conditions.
SF682 2rs Bearing Typical Application Areas
This miniature sealed bearing is commonly specified in:
- Small Precision Motors: Used in stepper motors, DC micromotors, and coreless motors.
- Medical and Dental Devices: Ideal for handheld surgical tools, dental handpieces, and pump mechanisms due to its corrosion resistance and reliability.
- Office Automation Equipment: Found in scanners, printers, and small fans.
- Instrumentation and Control Systems: Used in encoders, sensors, and precision gauges.
- Robotics and RC Models: Supports joints, wheels, and small gearboxes where compact size and low friction are critical.
