SFR133
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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SFR133 Bearing Product Overview & Core Advantages
The SFR133 is a precision miniature ball bearing designed for applications demanding compact size and reliable performance. This single row radial ball bearing features an open design and is constructed entirely from stainless steel, providing excellent corrosion resistance. Its primary advantages include a compact flange for secure mounting, compliance with ABEC1 precision standards for smooth operation, and suitability for a wide operating temperature range. It is engineered to handle radial loads efficiently in space-constrained assemblies.
SFR133 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| SFR | Denotes the specific bearing series, indicating a flanged miniature radial ball bearing. |
| 133 | Specifies the dimensional series, defining the bearing size with a bore of 0.09375", OD of 0.1875", and width of 0.0625". |
| (Open Construction) | The absence of a seal suffix indicates an open bearing, allowing for custom lubrication schemes but requiring a clean operating environment. |
SFR133 Bearing Structural Features & Performance Benefits
- Compact Flanged Design: The integrated flange (OD: 0.234") facilitates easy and secure axial location and mounting, simplifying assembly in miniature applications.
- Full Stainless Steel Construction: Rings, balls, and cage are made from stainless steel, offering superior corrosion resistance and making the bearing suitable for harsh environments and cleanroom applications.
- Precision Performance: Manufactured to ABEC1 tolerance class with controlled radial internal clearance (MC3 group), ensuring smooth and consistent rotation with low noise and vibration.
- High-Speed Capability: With a limiting speed of 72,000 rpm, this bearing is capable of high rotational velocities, ideal for small, fast-spinning shafts.
- Radial Load Capacity: Engineered to handle a dynamic radial load of 32 lbf and a static radial load of 10 lbf, providing reliable performance in compact designs.
SFR133 Bearing Typical Application Areas
The SFR133 is ideally suited for a wide range of miniature and precision equipment:
- Small DC Motors and Gear Motors
- Medical Devices and Instrumentation (e.g., surgical hand tools, pumps)
- Precision Optical Encoders and Scanners
- Robotics and Miniature Actuators
- Radio-Controlled Models and Drones
- Office Automation Equipment (e.g., small printers, scanners)
