SMF137 2rs
SMF Series Stainless Steel Flanged Miniature Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
SMF137 2rs
Basic Information
Bearing type
Ball
System of measurement
Metric
Construction
Single Row
Weight
2.17 g
Tolerance class
ABEC1
Seal type
Sealed
For load direction
Radial
Main Dimensions
Bore diameter
7 mm
Bore diameter tolerance
-0.008mm to 0
Outside diameter
13 mm
Outside diameter tolerance
-0.008mm to 0
Width
4 mm
Width tolerance
-0.12mm to 0
Inner Ring Dimensions
Inner ring type
Standard
Outer Ring Dimensions
Flange outer diameter
14.6 mm
Flange thickness
0.8 mm
Ball & Washer Dimensions
Ball diameter
1.2 mm
Ball quantity
12
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
93 lbf
Radial static load rating
45 lbf
Limiting speed
36 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
Shield material
Nitrile Rubber
Environment & Compliance
REACH
Compliant
ROHS
Compliant
Technical Drawings
No drawings available at the moment, will be launched soon
Price:
$ 1.59
/ each
In Stock
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SMF137 2rs Bearing Product Overview & Core Advantages
The SMF137 2RS is a sealed miniature ball bearing designed for applications requiring compact dimensions and reliable performance. This single row deep groove ball bearing excels in handling radial loads and is constructed entirely from stainless steel for enhanced corrosion resistance. Its key advantages include a compact 7mm bore design, integrated rubber seals (2RS) for effective contamination exclusion, and suitability for a wide operating temperature range. This bearing is ideal for high-precision, space-constrained mechanisms demanding long-term reliability.
SMF137 2rs Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| SMF137 | The base bearing designation, indicating a specific series with a 7mm bore, 13mm outside diameter, and 4mm width. |
| 2RS | Signifies that the bearing is fitted with contact rubber seals on both sides. This provides superior protection against dust and moisture ingress compared to shielded variants. |
SMF137 2rs Bearing Structural Features & Performance Benefits
- All-Stainless Steel Construction: The rings, balls, and cage are manufactured from stainless steel, offering excellent corrosion resistance and making the bearing suitable for harsh environments and washdown applications.
- Deep Groove Raceway: The geometry of the inner and outer ring raceways is optimized to efficiently support radial dynamic loads up to 93 lbf.
- Integrated Rubber Seals (2RS): The contact seals effectively retain lubrication and exclude contaminants, significantly extending bearing service life and reducing maintenance needs.
- Precision ABEC1 Tolerance: Manufactured to ABEC1 precision class standards, ensuring consistent running accuracy and smooth operation, which is critical for miniature applications.
- Optimized Internal Clearance (MC3): Features a C3 radial internal clearance (0.002mm to 0.013mm), providing slightly more room than normal clearance to accommodate thermal expansion in applications with higher operational temperatures or where fits create a reduction in internal clearance.
SMF137 2rs Bearing Typical Application Areas
The SMF137 2RS is widely used in compact and precision devices across various industries, including:
- Small Electric Motors: Ideal for spindle support in miniature DC motors and stepper motors.
- Medical and Dental Equipment: Used in handheld surgical tools, dental handpieces, and diagnostic devices due to its corrosion resistance and reliability.
- Precision Instruments: Suitable for optical encoders, gauges, and laboratory equipment.
- Office Automation: Found in printers, scanners, and copiers.
- Robotics and Automation: Applied in small joints, actuators, and guided assemblies.
