S681
600 Series Stainless Steel Miniature Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
S681
Basic Information
Bearing type
Ball
System of measurement
Metric
Construction
Single Row
Weight
0.03 g
Tolerance class
ABEC1
Seal type
Open
For load direction
Radial
Main Dimensions
Bore diameter
1 mm
Bore diameter tolerance
-0.008mm to 0
Outside diameter
3 mm
Outside diameter tolerance
-0.008mm to 0
Width
1 mm
Width tolerance
-0.12mm to 0
Inner Ring Dimensions
Inner ring type
Standard
Ball & Washer Dimensions
Ball diameter
0.6 mm
Ball quantity
6
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
17 lbf
Radial static load rating
4 lbf
Limiting speed
117 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:
$ 17.64
/ each
In Stock
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S681 Bearing Product Overview & Core Advantages
The S681 is a miniature metric single row deep groove ball bearing engineered for applications demanding compact design and reliable performance in confined spaces. Manufactured entirely from stainless steel, it offers excellent corrosion resistance. This bearing is designed to primarily support radial loads and is characterized by its extremely small dimensions (1mm bore, 3mm OD, 1mm width) and low weight of just 0.03g. Its open design allows for versatile lubrication options to suit specific operational needs, making it ideal for high-precision, small-scale mechanisms.
S681 Bearing Model Code Explained, Specifications & Naming Convention
While the base model "S681" defines the core dimensions, its specifications indicate key technical features. The following details are inherent to this bearing's design:
| Code/Specification | Technical Meaning |
|---|---|
| S681 | Standard designation for a miniature deep groove ball bearing with a 1mm bore, 3mm outside diameter, and 1mm width. |
| Open (Seal Type) | No integral seals or shields, allowing for high-speed operation and custom lubrication schemes. |
| ABEC1 | Specifies the tolerance class, indicating standard precision levels suitable for a wide range of applications. |
| MC3 | Defines the radial internal clearance group, optimized for general operating conditions. |
S681 Bearing Structural Features & Performance Benefits
The performance of the S681 bearing is a direct result of its meticulous construction:
- All-Stainless-Steel Construction: The rings, balls, and stainless steel cage provide superior corrosion resistance, making the bearing suitable for harsh environments and ensuring long-term operational integrity.
- High-Speed Capability: The open design and precision-ground components contribute to a high limiting speed of 117,000 rpm, which is exceptional for its size.
- Precision & Smooth Operation: Manufactured to ABEC1 tolerances, this bearing ensures consistent performance and low vibration, which is critical in sensitive instrumentation.
- Optimized Internal Geometry: With 6 balls of 0.6mm diameter, the bearing is engineered for efficient load distribution and smooth rotation.
S681 Bearing Typical Application Areas
The S681 miniature bearing is indispensable in compact, high-speed devices across various industries. Key applications include:
- Precision Instruments: Optical encoders, gyroscopes, and laboratory equipment.
- Small Motors: Coreless and micro-DC motors used in drones, medical devices, and robotics.
- Office Automation: Hard disk drive spindles, printer rollers, and scanner mechanisms.
- Medical Technology: Surgical hand tools, dental drills, and miniature pumps.
- Consumer Electronics: Small fans, miniature gearboxes, and RC models.
