SMF52 2rs
SMF Series Stainless Steel Flanged Miniature Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
SMF52 2rs
Basic Information
Bearing type
Ball
System of measurement
Metric
Construction
Single Row
Weight
0.19 g
Tolerance class
ABEC1
Seal type
Sealed
For load direction
Radial
Main Dimensions
Bore diameter
2 mm
Bore diameter tolerance
-0.008mm to 0
Outside diameter
5 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
Outer Ring Dimensions
Flange outer diameter
6.2 mm
Flange thickness
0.6 mm
Ball & Washer Dimensions
Ball diameter
0.8 mm
Ball quantity
6
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
29 lbf
Radial static load rating
8 lbf
Limiting speed
76.5 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:
$ 3
/ each
In Stock
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SMF52 2rs Bearing Product Overview & Core Advantages
The SMF52 2RS is a miniature deep groove ball bearing engineered for precision applications requiring compact dimensions and reliable performance. This sealed single row bearing excels in handling radial loads and is constructed entirely from stainless steel for enhanced corrosion resistance. Its primary advantages include a compact 2 mm bore, integrated nitrile rubber seals for effective contamination exclusion, and suitability for high-speed operation up to 76,500 rpm, making it an ideal choice for applications demanding high reliability in a minimal footprint.
SMF52 2rs Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| SMF52 | The base designation indicating a specific series of miniature flanged bearings with a 2 mm bore diameter, 5 mm outer diameter, and 2.5 mm width. |
| 2RS | Signifies that the bearing is equipped with contact seals on both sides, made from Nitrile Rubber (NBR). This provides superior protection against dust and moisture ingress, retaining lubricant effectively for extended service life. |
SMF52 2rs Bearing Structural Features & Performance Benefits
- Compact & Robust Flange Design: The integrated flange (6.2 mm outer diameter) facilitates secure and precise axial location within the housing, simplifying assembly and enhancing mounting rigidity.
- High-Speed Capability: The optimized design with 6 precision stainless steel balls and a stainless steel cage allows for a high limiting speed of 76,500 rpm, making it suitable for demanding miniature drive systems.
- Effective Sealing & Lubrication: The 2RS contact seals effectively shield the internal components from contaminants. The bearing requires lubrication, which, when applied with a compatible grease, ensures smooth operation and long service intervals across a temperature range of -30°C to 110°C.
- Stainless Steel Construction: All critical components (rings, balls, cage) are manufactured from stainless steel, offering excellent resistance to corrosion and making the bearing suitable for applications exposed to mild chemicals or humid environments.
- Precision Tolerance: Manufactured to ABEC1 tolerance class with a controlled MC3 radial internal clearance (0.002mm to 0.013mm), ensuring consistent and reliable performance.
SMF52 2rs Bearing Typical Application Areas
- Small Precision Motors: Ideal for spindle support in miniature DC motors, stepper motors, and coreless motors.
- Medical and Dental Devices: Used in handheld surgical tools, dental handpieces, and miniature pumps where reliability and corrosion resistance are critical.
- Office Automation Equipment: Suitable for scanners, printers, and copiers, particularly in paper feed and scanner carriage mechanisms.
- Instrumentation and Robotics: Applied in precision encoders, small robotic joints, and guidance systems requiring high-speed and low-friction rotation.
- Radio-Controlled Models and Drones: Used in motor and gearbox assemblies for their lightweight and high-speed performance.
