7202 CD/HCP4ADGB
Hybrid Ceramic Super Precision Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
Performance
Materials
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Product Overview and Core Advantages
The 7202 CD/HCP4ADGB is a **high-precision angular contact ball bearing** designed for demanding applications requiring exceptional accuracy and performance. This **universal matchable bearing** features a **light preload (Class B)** and **ceramic ball construction**, enabling superior **high-speed capabilities** and extended service life. Its **15° contact angle** and optimized internal geometry provide excellent **combined load capacity**, handling both radial and axial loads simultaneously while maintaining **high rigidity** and rotational accuracy.
7202 CD/HCP4ADGB Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7202 | Basic bearing series with 15mm bore, 35mm OD |
| CD | **15° contact angle** and optimized internal design |
| HC | **Hybrid ceramic** construction with ceramic balls |
| P4A | **High precision tolerance class** (ABEC 7 equivalent) |
| DGB | **Universal matchable** bearing set (SU designation) |
Structural Features and Performance Benefits
Hybrid Ceramic Construction: The combination of **chrome steel rings** and **ceramic balls (Si3N4)** significantly reduces friction and heat generation, enabling **higher limiting speeds** (95,000 rpm) and improved service life in demanding applications.
Precision Engineering: Manufactured to **P4A tolerance class**, this bearing ensures minimal runout and vibration, making it ideal for **high-precision spindle applications** where rotational accuracy is critical.
Universal Matching Capability: As a **universal matchable bearing (SU)**, it can be mounted in various preload configurations without selective matching, simplifying installation and maintenance procedures.
Optimized Cage Design: The **phenolic resin cage** provides excellent strength-to-weight ratio and operates effectively at high speeds while being compatible with various lubrication systems.
7202 CD/HCP4ADGB Bearing Typical Application Areas
- Machine Tool Spindles: High-speed machining centers and precision grinding spindles
- Medical Equipment: Dental handpieces and surgical drill systems
- Aerospace Systems: Gyroscopes and navigation instrument rotors
- Semiconductor Manufacturing: Wafer handling robots and precision positioning stages
- High-Speed Motors: CNC spindle motors and high-frequency electric motors
