SMF93 2rs
SMF Series Stainless Steel Flanged Miniature Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
SMF93 2rs
Basic Information
Bearing type
Ball
System of measurement
Metric
Construction
Single Row
Weight
0.83 g
Tolerance class
ABEC1
Seal type
Sealed
For load direction
Radial
Main Dimensions
Bore diameter
3 mm
Bore diameter tolerance
-0.008mm to 0
Outside diameter
9 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
10.6 mm
Flange thickness
0.8 mm
Ball & Washer Dimensions
Ball diameter
1.588 mm
Ball quantity
6
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
98 lbf
Radial static load rating
31 lbf
Limiting speed
50.4 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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SMF93 2rs Bearing Product Overview & Core Advantages
The SMF93 2RS is a metric miniature ball bearing designed for compact applications requiring reliable performance. As a single row deep groove ball bearing with integral rubber seals (2RS), it offers effective protection against contamination while retaining lubrication. Constructed entirely from stainless steel (rings, balls, and cage), it provides excellent corrosion resistance. Its key advantages include a compact design with a 3mm bore, suitability for radial loads, and readiness for use with pre-applied lubrication, making it ideal for high-precision, small-scale mechanisms.
SMF93 2rs Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning | Benefit |
|---|---|---|
| SMF93 | Standard bearing series designation indicating a flanged miniature bearing with specific bore diameter (3mm), outside diameter (9mm), and width (4mm). | Defines the core bearing dimensions and the presence of a flange for simplified mounting and axial location. |
| 2RS | Bearing is fitted with contact rubber seals on both sides. | Provides superior contamination exclusion and lubricant retention compared to shields, enhancing bearing life in dusty or dirty environments. |
SMF93 2rs Bearing Structural Features & Performance Benefits
- Deep Groove Raceway & Single Row Design: Optimized for handling radial loads efficiently. The geometry allows for smooth operation and low running torque.
- Stainless Steel Construction: All critical components (rings, balls, cage) are made from stainless steel, providing excellent corrosion resistance and making the bearing suitable for applications exposed to moisture or chemicals.
- Integrated Flange (Flange OD: 10.6mm): The flange simplifies installation and provides positive axial location within a housing, reducing the need for complex housing designs and saving assembly time.
- Rubber Contact Seals (2RS): These seals make the bearing highly effective at keeping contaminants out and grease in, contributing to a longer service life and reduced maintenance needs in challenging conditions.
- ABEC1 Precision & MC3 Clearance: Manufactured to ABEC1 tolerance class with an MC3 radial internal clearance (0.002mm to 0.013mm), ensuring consistent and reliable performance for general precision applications.
SMF93 2rs Bearing Typical Application Areas
The SMF93 2RS is ideally suited for small, precision devices across various industries, including:
- Small Precision Motors: Used in stepper motors, DC micromotors, and fan motors.
- Medical and Dental Equipment: Ideal for handheld surgical tools, dental handpieces, and pump mechanisms due to its corrosion resistance and reliability.
- Office Automation Equipment: Found in printers, scanners, and copiers for paper feed rollers and scanner carriages.
- Instrumentation and Control Systems: Used in encoders, sensors, and small actuators where compact size and precise rotation are critical.
- Radio Control Models and Drones: Supports motors and control surfaces in hobbyist and professional-grade models.
