MF52
MF Series 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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MF52 Bearing Product Overview & Core Advantages
The MF52 is a metric miniature ball bearing engineered for precision applications requiring compact design and reliable performance. As a single row deep groove ball bearing, it is optimized to primarily handle radial loads efficiently. Its construction from high-grade chrome steel ensures durability and consistent operation. This bearing is characterized by its extremely small dimensions (2mm bore, 5mm OD) and light weight (0.19g), making it an ideal solution for space-constrained, high-speed mechanisms demanding ABEC1 precision.
Model Code Breakdown
| Code Segment | Technical Meaning |
|---|---|
| MF52 | Standard model designation for this specific miniature bearing series with a 2mm bore and 5mm outside diameter. |
| Open (Seal Type) | The bearing is unsealed ("Open"), allowing for custom lubrication strategies but requiring operation in a clean environment. |
| MC3 (Clearance) | Specifies a MC3 radial internal clearance group (0.002mm to 0.013mm), suitable for applications with moderate operational temperatures and interference fits. |
MF52 Bearing Structural Features & Performance Benefits
- High-Speed Capability: The combination of a stainless steel cage, six precision balls, and an ABEC1 tolerance class enables a high limiting speed of 85,000 rpm, which is critical for miniature high-speed applications.
- Robust Load Handling: Despite its miniature size, it offers a dynamic load rating of 32 lbf and a static load rating of 9 lbf, providing reliable performance under substantial radial loads.
- Precision Engineering: Manufactured with tight dimensional tolerances on the bore, outside diameter, and width, ensuring precise fit and smooth running in precision instruments.
- Material Integrity: Constructed from chrome steel rings and balls for high wear resistance and long service life, complemented by a corrosion-resistant stainless steel cage.
MF52 Bearing Typical Application Areas
The MF52 miniature ball bearing is designed for use in compact, high-speed devices across various industries. Key applications include:
- Small Precision Motors: Ideal for spindle support in miniature DC motors and stepper motors.
- Medical and Dental Tools: Used in high-speed handpieces, surgical drivers, and small pumps where reliability and size are critical.
- Office Automation Equipment: Suitable for scanners, small fans, and precision rollers.
- Instrumentation and Gauges: Provides smooth, low-friction rotation in sensitive measuring devices.
- Robotics and RC Models: Used in small joints, gearboxes, and drone motors requiring lightweight, high-speed components.
