SMR52
SMR Series Stainless Steel Miniature Bearings
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Basic Information
Main Dimensions
Inner Ring Dimensions
Ball & Washer Dimensions
Performance
Materials
Environment & Compliance
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SMR52 Bearing Product Overview & Core Advantages
The SMR52 is a metric miniature ball bearing engineered for applications demanding high precision and compact design. As a single row deep groove ball bearing, it is optimized to handle primarily radial loads efficiently. Manufactured entirely from stainless steel, it offers excellent corrosion resistance. Its small bearing dimensions (2mm bore, 5mm OD, 2mm width) and light weight (0.14g) make it ideal for space-constrained, high-speed mechanisms. The bearing conforms to ABEC1 tolerance class, ensuring reliable performance in various precision instruments and small machinery.
SMR52 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| SMR | Manufacturer's series prefix for miniature bearings. |
| 52 | Standard bearing size designation indicating a 2mm bore, 5mm outside diameter, and 2mm width. |
| Open (Seal Type) | The bearing is unsealed (Open), requiring an external sealing solution for contaminated environments but allowing for custom lubrication. |
| ABEC1 | Specifies the precision class, defining tolerances for runout and dimensions. |
| MC3 | Indicates the standard radial internal clearance group (0.002mm to 0.013mm). |
SMR52 Bearing Structural Features & Performance Benefits
- All-Stainless-Steel Construction: The rings, balls, and stainless steel cage provide superior corrosion resistance, making the bearing suitable for harsh environments and ensuring long-term reliability.
- High-Speed Capability: With a limiting speed of 76,500 rpm, this bearing is designed for high-speed applications. The deep groove raceway and precision-ground components contribute to smooth, low-vibration operation at high rotational velocities.
- Radial Load Capacity: The deep groove geometry and 6 precision balls enable efficient handling of radial dynamic loads up to 29 lbf and radial static loads up to 8 lbf.
- Precision Engineering: Manufactured to ABEC1 standards, this bearing offers tight dimensional control and low runout, which is critical for reducing noise and vibration in sensitive equipment.
- Flexible Lubrication: As an open bearing, it allows for the application of specialized lubricants tailored to specific operational needs, including extreme temperatures ranging from -30°C to 110°C.
SMR52 Bearing Typical Application Areas
The SMR52 miniature bearing is ideally suited for a wide range of compact and high-precision devices, including:
- Small Precision Motors and stepper motors
- Medical and Dental Hand Tools
- Optical Encoders and scanning devices
- Small Fans and Blowers
- RC Models and Drones
- Instrumentation and Laboratory Equipment
- Office Automation Equipment (e.g., printers, scanners)
