SF683 2rs
SF Series Stainless Steel Flanged Miniature Bearings
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Part No.
Part No.
SF683 2rs
Basic Information
Bearing type
Ball
System of measurement
Metric
Construction
Single Row
Weight
0.53 g
Tolerance class
ABEC1
Seal type
Sealed
For load direction
Radial
Main Dimensions
Bore diameter
3 mm
Bore diameter tolerance
-0.008mm to 0
Outside diameter
7 mm
Outside diameter tolerance
-0.008mm to 0
Width
3 mm
Width tolerance
-0.12mm to 0
Inner Ring Dimensions
Inner ring type
Standard
Outer Ring Dimensions
Flange outer diameter
8.1 mm
Flange thickness
0.8 mm
Ball & Washer Dimensions
Ball diameter
1 mm
Ball quantity
8
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
54 lbf
Radial static load rating
18 lbf
Limiting speed
56.7 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
Nitrile Rubber
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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SF683 2rs Bearing Product Overview & Core Advantages
The SF683 2RS is a metric miniature deep groove ball bearing designed for compact applications requiring high reliability. This sealed single row bearing excels in handling radial loads and is constructed entirely from stainless steel for superior corrosion resistance. Its key advantages include a compact flange design for secure mounting, pre-lubrication for immediate operation, and compliance with RoHS and REACH environmental standards, making it ideal for precision instruments and small mechanisms.
SF683 2rs Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning | Significance |
|---|---|---|
| SF683 | Basic bearing designation indicating a metric, flanged miniature bearing with a 3mm bore, 7mm OD, and 3mm width. | Defines the core bearing dimensions and flanged outer ring. |
| 2RS | Bearing is equipped with two (2) Nitrile Rubber (RS) contact seals, one on each side. | Provides excellent protection against contaminants and retains lubricant, enhancing bearing life and enabling maintenance-free operation in many applications. |
SF683 2rs Bearing Structural Features & Performance Benefits
- Compact & Robust Flange Design: The outer ring flange (8.1mm diameter) facilitates easy and secure axial locating, simplifying housing design and assembly in compact spaces.
- All-Stainless Steel Construction: The rings, balls, and cage are made from stainless steel, providing excellent resistance to corrosion and enabling use in harsh or washdown environments.
- Effective Sealing & Lubrication: The dual nitrile rubber contact seals (2RS) effectively shield the precision bearing internals. The bearing comes pre-lubricated, ensuring immediate, smooth operation and long service life.
- Precision & Speed: Manufactured to ABEC1 tolerance class with a controlled radial internal clearance (MC3: 0.002mm to 0.013mm), this bearing offers reliable performance and a high limiting speed of 56,700 rpm.
SF683 2rs Bearing Typical Application Areas
This bearing is ideally suited for applications where small size, corrosion resistance, and reliability are paramount. Key sectors include:
- Small Precision Motors: Used in stepper motors, DC micromotors, and fan motors.
- Medical and Dental Devices: Ideal for handheld surgical tools, dental handpieces, and pump mechanisms.
- Office Automation Equipment: Found in printers, scanners, and copiers.
- Instrumentation and Control Systems: Used in encoders, sensors, and small gearboxes.
- Radio Control Models and Drones: Suitable for small motors and actuation systems.
