693
600 Series Miniature Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
693
Basic Information
Bearing type
Ball
System of measurement
Metric
Construction
Single Row
Weight
0.6 g
Tolerance class
ABEC1
Seal type
Open
For load direction
Radial
Main Dimensions
Bore diameter
3 mm
Bore diameter tolerance
-0.008mm to 0
Outside diameter
8 mm
Outside diameter tolerance
-0.008mm to 0
Width
3 mm
Width tolerance
-0.12mm to 0
Inner Ring Dimensions
Inner ring type
Standard
Ball & Washer Dimensions
Ball diameter
1.588 mm
Ball quantity
6
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
107 lbf
Radial static load rating
32 lbf
Limiting speed
60 X 1000 rpm
Lubrication
Required
Radial internal clearance
0.002mm to 0.013mm
Radial internal clearance
MC3
Materials
Ring material
Chrome Steel
Ball material
Chrome Steel
Cage material
Stainless Steel
Environment & Compliance
REACH
Compliant
ROHS
Compliant
Technical Drawings
No drawings available at the moment, will be launched soon
Price:
$ 1.13
/ each
In Stock
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693 Bearing Product Overview & Core Advantages
The 693 metric ball bearing is a compact, high-precision single row deep groove ball bearing designed for applications requiring reliable performance in a minimal space. Engineered from high-grade chrome steel, this bearing is optimized to carry primarily radial loads and is characterized by its low friction and smooth operation. Its small bearing dimensions (3mm bore, 8mm OD) make it an ideal component for miniature and precision mechanisms demanding high rotational accuracy and durability.
693 Bearing Model Code Explained, Specifications & Naming Convention
| Model Segment | Technical Meaning |
|---|---|
| 693 | Standard designation for a metric series, single row deep groove ball bearing with a 3mm bore diameter. |
| Open (Seal Type) | The bearing is supplied without seals or shields, allowing for higher limiting speeds and easy re-lubrication, but requiring a clean operating environment. |
| ABEC1 | Specifies the precision class, indicating standard tolerances for high-quality commercial-grade applications. |
| MC3 | Defines the radial internal clearance group, suitable for most general applications with normal operating conditions. |
693 Bearing Structural Features & Performance Benefits
- High-Speed Capability: The open design and stainless steel cage contribute to a high limiting speed of 60,000 rpm, making it suitable for high-speed miniature spindles and motors.
- Radial Load Capacity: The deep groove raceway and optimized geometry enable efficient handling of radial loads, with a dynamic load rating of 107 lbf.
- Precision & Low Noise: Manufactured to ABEC1 tolerance standards, this bearing ensures smooth, quiet, and vibration-free operation, which is critical in sensitive instrumentation.
- Material Integrity: Constructed from chrome steel rings and balls with a stainless steel cage, the bearing offers excellent durability, corrosion resistance, and a long service life.
693 Bearing Typical Application Areas
This versatile miniature bearing is ideally suited for:
- Small precision electric motors and high-speed spindles
- Instrumentation and gauge mechanisms
- Office automation equipment (e.g., printers, scanners)
- Medical devices and dental handpieces
- Robotics and miniature gearboxes
- Computer cooling fans and small pumps
