SMF72 2rs
SMF 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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SMF72 2rs Bearing Product Overview & Core Advantages
The SMF72 2RS is a miniature sealed ball bearing designed for applications demanding compact size and reliable performance. As a single row deep groove ball bearing, it is optimized to primarily handle radial loads while also accommodating moderate axial loads. Constructed entirely from stainless steel with nitrile rubber seals, it offers excellent corrosion resistance and is pre-lubricated for immediate use. Its miniature dimensions (2mm bore, 7mm OD) and integrated flange make it ideal for space-constrained, high-precision assemblies requiring consistent operation and long service life.
SMF72 2rs Bearing Model Code Explained, Specifications & Naming Convention
| Model Segment | Technical Meaning | Benefit |
|---|---|---|
| SMF72 | Standard bearing series designation indicating a flanged miniature bearing with specific 2mm bore and 7mm outside diameter dimensions. | Defines the core size and flanged construction for easy mounting and positioning. |
| 2RS | Indicates the bearing is fitted with two contact seals (RS) made of Nitrile Rubber (Buna-N) on both sides. | Provides superior protection against contaminants and retains lubricant, enhancing bearing life and enabling maintenance-free operation in many environments. |
SMF72 2rs Bearing Structural Features & Performance Benefits
- Robust Construction & Corrosion Resistance: The use of stainless steel for the rings, balls, and cage ensures high resistance to rust and corrosion, making it suitable for harsh or washdown environments.
- Effective Sealing & Contamination Protection: The two-sided nitrile rubber contact seals (2RS) effectively shield the internal components from dust, moisture, and other contaminants, while securely retaining the pre-applied lubricant.
- High-Speed Capability: With a limiting speed of 56,700 rpm, this bearing is engineered for high-speed miniature applications. The deep groove raceway and precision construction contribute to smooth, low-vibration operation at high velocities.
- Simplified Mounting & Positioning: The integrated flange allows for straightforward axial location within a housing, simplifying assembly and reducing the need for complex housing designs.
- Precision & Low Noise: Manufactured to ABEC1 tolerance class, it ensures consistent running accuracy, which is critical for sensitive applications in precision instruments.
SMF72 2rs Bearing Typical Application Areas
The SMF72 2RS is ideally suited for compact mechanisms requiring high reliability and speed. Key application areas include:
- Small Precision Motors (e.g., stepper motors, coreless motors)
- Medical and Dental Handpieces
- Office Automation Equipment (e.g., printers, scanners, copiers)
- Instrumentation and Measurement Devices
- Radio-Control Models and Drones
- Small Fans and Blowers
