ET2520 ZZ
ET Series Thin Section Bearings
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Basic Information
Main Dimensions
Performance
Materials
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ET2520 ZZ Bearing Product Overview & Core Advantages
The ET2520 ZZ is a single row deep groove ball bearing designed for precision applications requiring reliable performance in a compact form factor. Engineered with shielded construction, it offers effective protection against contamination while maintaining smooth operation. This bearing is characterized by its ability to handle primarily radial loads and is manufactured to ABEC-1 precision tolerances, ensuring consistent performance and interchangeability. Its compact dimensions (20mm bore, 25mm OD, 4mm width) make it ideal for space-constrained applications where high rotational speeds up to 10,000 rpm are required.
ET2520 ZZ Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning | Performance Implication |
|---|---|---|
| ET2520 | Basic designation: 20mm bore, 25mm OD, 4mm width | Defines critical bearing dimensions for proper fit and application |
| ZZ | Double shielded construction on both sides | Provides effective contamination protection while allowing high-speed operation |
ET2520 ZZ Bearing Structural Features & Performance Benefits
Optimized Load Capacity: The single row deep groove raceway geometry enables efficient handling of radial loads (227 lbf dynamic, 155 lbf static) while accommodating moderate axial loads in both directions.
High-Speed Capability: Featuring a stainless steel cage and precision-ground chrome steel components, this bearing achieves limiting speeds of 10,000 rpm, making it suitable for demanding rotational applications.
Precision Engineering: Manufactured to ABEC-1 tolerance class with controlled radial internal clearance (C0: 0.006-0.020mm), ensuring consistent performance, reduced vibration, and smooth operation.
Material Excellence: Constructed from chrome steel rings and balls with stainless steel cage, providing excellent durability, corrosion resistance, and long service life in various operating conditions.
ET2520 ZZ Bearing Typical Application Areas
- Small Electric Motors: Ideal for miniature DC motors, stepper motors, and fan motors requiring high-speed operation and compact design
- Precision Instruments: Suitable for medical devices, optical equipment, and measuring instruments where low noise and vibration control are critical
- Office Automation: Commonly used in printers, scanners, copiers, and other office equipment for reliable rotational performance
- Robotics and Automation: Applied in small robotic joints, positioning systems, and automated machinery requiring precision motion control
- Consumer Electronics: Used in high-performance computer cooling fans, drone motors, and portable electronic devices
