SMR83
SMR Series Stainless Steel Miniature Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
SMR83
Basic Information
Bearing type
Ball
System of measurement
Metric
Construction
Single Row
Weight
0.51 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
2.5 mm
Width tolerance
-0.12mm to 0
Inner Ring Dimensions
Inner ring type
Standard
Ball & Washer Dimensions
Ball diameter
1.2 mm
Ball quantity
7
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
68 lbf
Radial static load rating
23 lbf
Limiting speed
54 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
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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SMR83 Bearing Product Overview & Core Advantages
The SMR83 is a metric miniature deep groove ball bearing engineered for precision applications requiring compact design and reliable performance. Constructed entirely from stainless steel, it offers excellent corrosion resistance. As a single row, open bearing, it is designed primarily for radial loads and is characterized by its low friction and high limiting speed. Its small bore diameter of 3mm and overall compact dimensions make it an ideal solution for high-speed, space-constrained mechanisms where consistent operation is critical.
SMR83 Bearing Model Code Explained, Specifications & Naming Convention
| Model Segment | Technical Meaning |
|---|---|
| SMR83 | The base model number, defining the core bearing dimensions: 3mm bore, 8mm OD, 2.5mm width. |
| Open (No Seal Suffix) | The bearing is supplied without seals or shields, allowing for the lowest possible friction and highest speed capability. Lubrication is required by the user for operation. |
| ABEC1 | Specifies the tolerance class, indicating standard precision levels for runout and dimensional accuracy. |
| MC3 | Denotes the radial internal clearance group (0.002mm to 0.013mm), which is optimized for general operating conditions. |
SMR83 Bearing Structural Features & Performance Benefits
- 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 reliability.
- High-Speed Capability: The open design and precision-ground components minimize friction, enabling a high limiting speed of 54,000 rpm for its size class.
- Radial Load Capacity: With a radial dynamic load rating of 68 lbf and a static rating of 23 lbf, this miniature bearing delivers robust performance for its compact dimensions.
- Precision Engineering: Manufactured to ABEC1 tolerances, the bearing ensures smooth and consistent operation, reducing vibration and noise in sensitive applications.
SMR83 Bearing Typical Application Areas
This bearing is ideally suited for a wide range of compact and high-speed devices, including:
- Small Precision Motors and stepper motors
- Medical and Dental Handpieces
- Optical Encoders and precision instrumentation
- Small Fans and Blowers
- RC Models and Drones
- Office Automation Equipment
