SFR155
SFR Series Stainless Steel Flanged Miniature Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
SFR155
Basic Information
Bearing type
Ball
System of measurement
Inch
Construction
Single Row
Weight
0.56 g
Tolerance class
ABEC1
Seal type
Open
For load direction
Radial
Main Dimensions
Bore diameter
0.15625"
Bore diameter tolerance
-0.0003" to 0"
Outside diameter
0.3125"
Outside diameter tolerance
-0.0003" to 0"
Width
0.1094"
Width tolerance
-0.005" to 0"
Inner Ring Dimensions
Inner ring type
Standard
Outer Ring Dimensions
Flange outer diameter
0.359"
Flange thickness
0.023"
Ball & Washer Dimensions
Ball diameter
0.03941"
Ball quantity
10
Performance
Temperature range
-86 to 230 °F
Radial dynamic load rating
62 lbf
Radial static load rating
24 lbf
Limiting speed
47.7 X 1000 rpm
Lubrication
Required
Radial internal clearance
MC3
Radial internal clearance
0.00008" to 0.0005"
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:
$ 1.59
/ each
In Stock
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SFR155 Bearing Product Overview & Core Advantages
The SFR155 is a precision miniature ball bearing designed for demanding applications requiring high reliability in compact spaces. As a single row deep groove ball bearing with an open design, it excels at handling radial loads efficiently. Manufactured entirely from stainless steel, it offers excellent corrosion resistance and is suitable for a wide temperature range from -86 to 230 °F. Its ABEC1 tolerance class ensures consistent performance, making it an ideal choice for high-speed operation up to 47,700 rpm.
SFR155 Bearing Model Code Explained, Specifications & Naming Convention
| Code Element | Technical Meaning |
|---|---|
| SFR155 | Standard series designation for a miniature flanged ball bearing with specific inch dimensions. |
| Open (Seal Type) | No integral seals or shields, allowing for higher limiting speeds and customization of lubrication. Requires a clean operating environment or external sealing. |
| ABEC1 | The tolerance class defining the precision level of the bearing's dimensional accuracy and running noise. |
| MC3 | Specifies the radial internal clearance group, which is greater than normal (C3), suitable for applications with thermal expansion or where a slight preload is undesirable. |
SFR155 Bearing Structural Features & Performance Benefits
- Deep Groove Raceway & Single Row Design: The optimized raceway geometry enables smooth operation and efficient handling of radial loads. The single row construction contributes to a compact bearing width and low weight of just 0.56 g.
- Integrated Flange: The flange (outer diameter: 0.359") facilitates secure and precise mounting, simplifying assembly and enhancing positional stability within the housing.
- Full Stainless Steel Construction: Both rings, balls, and the cage are made from stainless steel, providing superior corrosion resistance and durability in harsh environments, while also ensuring ROHS and REACH compliance.
- High-Speed Capability: The combination of a stainless steel cage, 10 precision balls, and an open design allows for a high limiting speed of 47,700 rpm, making it a capable high-speed bearing.
- Precision Engineering: With an ABEC1 precision rating and controlled radial internal clearance (0.00008" to 0.0005"), this bearing delivers consistent, low-vibration performance.
SFR155 Bearing Typical Application Areas
This bearing is ideally suited for applications where small size, corrosion resistance, and high-speed operation are critical. Key industries and equipment include:
- Small Precision Motors: Stepper motors, coreless motors, and DC micromotors.
- Medical and Dental Devices: Surgical hand tools, dental drills, and pump mechanisms.
- Office Automation Equipment: Scanner heads, precision rollers, and small fans.
- Instrumentation and Control Systems: Encoders, sensors, and guidance systems.
- Radio-Controlled Models and Drones: Motor and gearbox support in compact powertrains.
