SFR4
SFR Series Stainless Steel Flanged Miniature Bearings
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Basic Information
Main Dimensions
Inner Ring Dimensions
Outer Ring Dimensions
Ball & Washer Dimensions
Performance
Materials
Environment & Compliance
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SFR4 Bearing Product Overview & Core Advantages
The SFR4 is a precision single row deep groove ball bearing designed for reliable performance in demanding applications. Manufactured entirely from stainless steel, this bearing offers excellent corrosion resistance and is suitable for a wide operating temperature range from -86 to 230 °F. Its open design allows for versatile lubrication options, while its ABEC1 precision class ensures consistent operation. The SFR4 is engineered to handle primarily radial loads with a dynamic load rating of 255 lbf, making it a compact and robust solution for high-speed applications with a limiting speed of 34,200 rpm.
Model Code Breakdown
| Code | Technical Meaning | Significance |
|---|---|---|
| SFR4 | Standard bearing series designation | Identifies the specific bearing size and configuration |
| Open | No integral seals or shields | Allows for custom lubrication schemes and higher potential speeds |
| ABEC1 | Annular Bearing Engineers' Committee precision class 1 | Specifies standard precision tolerances for smooth, reliable operation |
| MC3 | Radial internal clearance group | Defines the operational internal fit (0.00008" to 0.0005") |
SFR4 Bearing Structural Features & Performance Benefits
- All-Stainless Steel Construction: The bearing rings, balls, and cage are manufactured from stainless steel, providing superior corrosion resistance and making it ideal for harsh environments, including those requiring washdown or exposure to chemicals.
- Deep Groove Raceway: The geometry of the raceway is optimized to support significant radial loads, while also being capable of accommodating moderate axial loads in both directions.
- High-Speed Capability: With a limiting speed of 34,200 rpm, the bearing is suitable for high-speed applications. The combination of 8 precision balls and a stainless steel cage ensures stable and balanced rotation.
- Standard Internal Clearance (MC3): The specified radial internal clearance is appropriate for most general applications, ensuring optimal performance without excessive play or preload under standard operating conditions.
SFR4 Bearing Typical Application Areas
The SFR4 inch-sized ball bearing is commonly specified in:
- Medical and Dental Equipment: Handpieces, small pumps, and diagnostic devices where corrosion resistance and reliability are critical.
- Food and Beverage Processing: Conveyor systems and machinery requiring frequent washdowns and compliance with hygiene standards.
- Precision Instruments: Optical encoders, gauging equipment, and laboratory apparatus.
- Small Motors and Gearboxes: Serving as a reliable radial load support in compact power transmission systems.
