S688
600 Series Stainless Steel Miniature Bearings
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Part No.
Part No.
S688
Basic Information
Bearing type
Ball
System of measurement
Metric
Construction
Single Row
Weight
3.11 g
Tolerance class
ABEC1
Seal type
Open
For load direction
Radial
Main Dimensions
Bore diameter
8 mm
Bore diameter tolerance
-0.008mm to 0
Outside diameter
16 mm
Outside diameter tolerance
-0.008mm to 0
Width
4 mm
Width tolerance
-0.12mm to 0
Inner Ring Dimensions
Inner ring type
Standard
Ball & Washer Dimensions
Ball diameter
2 mm
Ball quantity
10
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
216 lbf
Radial static load rating
96 lbf
Limiting speed
32.4 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:
$ 1.35
/ each
In Stock
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S688 Bearing Product Overview & Core Advantages
The S688 metric ball bearing is a single row deep groove ball bearing designed for high-performance radial load applications. Manufactured entirely from stainless steel, it offers excellent corrosion resistance. This open-type bearing is characterized by its compact design with a 4 mm width, making it ideal for applications where space is limited. It is built to ABEC1 precision class standards, providing reliable operation and is compliant with RoHS and REACH directives.
S688 Bearing Model Code Explained, Specifications & Naming Convention
| Model Segment | Technical Meaning |
|---|---|
| S | Indicates the use of stainless steel for rings and balls. |
| 6 | Series designator for a specific dimension series. |
| 88 | Bore diameter code for an 8 mm bore. |
| (Open) | No seal or shield suffix, indicating an open bearing that requires external lubrication. |
S688 Bearing Structural Features & Performance Benefits
- High-Grade Stainless Steel Construction: All components, including the rings, 2 mm balls, and cage, are made from stainless steel, providing superior corrosion resistance and durability in harsh environments.
- Optimized Radial Load Capacity: The single row deep groove construction is engineered to efficiently support radial dynamic loads up to 216 lbf and static loads up to 96 lbf.
- Precision Performance: Manufactured to ABEC1 tolerance class with a controlled MC3 radial internal clearance (0.002mm to 0.013mm), ensuring smooth and consistent operation.
- High-Speed Capability: With a limiting speed of 32,400 rpm, this bearing is suitable for demanding high-speed applications.
- Flexible Lubrication: As an open bearing, it allows for the selection of a specialized lubricant best suited for the specific application's temperature range of -30°C to 110°C.
S688 Bearing Typical Application Areas
- Small precision electric motors
- Medical and dental handpieces
- Office automation equipment (e.g., printers, scanners)
- Instrumentation and control devices
- Radio control models and drones
- Food processing machinery (where corrosion resistance is critical)
