SMR104
SMR Series Stainless Steel Miniature Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
SMR104
Basic Information
Bearing type
Ball
System of measurement
Metric
Construction
Single Row
Weight
0.96 g
Tolerance class
ABEC1
Seal type
Open
For load direction
Radial
Main Dimensions
Bore diameter
4 mm
Bore diameter tolerance
-0.008mm to 0
Outside diameter
10 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
8
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
122 lbf
Radial static load rating
44 lbf
Limiting speed
43.2 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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SMR104 Bearing Product Overview & Core Advantages
The SMR104 is a metric single row deep groove ball bearing engineered for precision radial load applications. Constructed entirely from stainless steel, it offers excellent corrosion resistance and reliable performance. This bearing is characterized by its compact dimensions (4mm bore, 10mm OD, 3mm width) and ABEC1 precision class, making it suitable for applications demanding high rotational accuracy and smooth operation. Its open design allows for versatile lubrication options to meet specific operational requirements.
SMR104 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| SMR | Manufacturer series designation for miniature stainless steel bearings. |
| 104 | Standard bearing size code indicating a 4mm bore, 10mm OD, and 3mm width. |
| Open (No Seal Suffix) | No integral seals or shields. Allows for high-speed operation and custom lubrication. |
| MC3 Clearance | Specifies a standard radial internal clearance group (0.002mm to 0.013mm), suitable for most general applications. |
SMR104 Bearing Structural Features & Performance Benefits
- High Precision & Smooth Operation: Manufactured to ABEC1 tolerance class with a stainless steel cage, ensuring low vibration and noise for sensitive applications.
- Robust Load Capacity: The deep groove raceway and 8 precision balls provide a dynamic load rating of 122 lbf and a static load rating of 44 lbf, offering reliable support for radial loads.
- Corrosion Resistance: All components, including rings, balls, and cage, are made from stainless steel, making it ideal for harsh environments and washdown applications.
- High-Speed Capability: The open design and optimized internal geometry contribute to a limiting speed of 43,200 rpm.
- Compliance & Versatility: Meets ROHS and REACH compliance standards and operates effectively within a temperature range of -30°C to 110°C.
SMR104 Bearing Typical Application Areas
This miniature bearing is ideally suited for:
- Small Precision Motors (e.g., drone motors, small fans)
- Medical and Dental Handpieces
- Office Automation Equipment (printers, scanners)
- Instrumentation and Control Devices
- RC Models and Hobbyist Applications
