S7020 CB/HCP4A
Hybrid Ceramic Super Precision Bearings
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Main Dimensions
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S7020 CB/HCP4A Bearing Product Overview & Core Advantages
The S7020 CB/HCP4A is a single-row angular contact ball bearing engineered for applications demanding high precision and superior speed performance. Its defining characteristic is the 15° contact angle and P4 (ABEC-7) tolerance class, ensuring exceptional running accuracy. This bearing is preloaded and comes pre-lubricated, making it ready for immediate installation in high-speed spindles and other precision machinery where high rigidity and minimal rotational error are critical.
S7020 CB/HCP4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| S7020 | Basic bearing designation, indicating a 100mm bore and 150mm outside diameter. |
| CB | Specific internal design featuring a 15° contact angle and preload for enhanced rigidity. |
| HC | Indicates the use of Hybrid Ceramic components (ceramic balls with steel rings). |
| P4A | Specifies the tolerance class P4 (ABEC-7), denoting very high precision. |
S7020 CB/HCP4A Bearing Structural Features & Performance Benefits
Hybrid Ceramic Construction: The combination of chrome steel rings and ceramic balls significantly reduces friction, heat generation, and wear. This allows for a higher limiting speed (13,000 rpm) and extended service life compared to all-steel bearings.
Phenolic Resin Cage: The lightweight and robust phenolic cage provides excellent dimensional stability and low friction at high speeds, contributing to smooth operation and reduced vibration.
Preload & High Rigidity: The bearing is supplied with a preload, which eliminates internal clearance. This results in superior shaft positioning accuracy and high system rigidity, critical for machining precision.
Sealed & Lubricated: The sealed design protects against contamination, and the factory-applied lubrication ensures optimal performance from the start, simplifying maintenance.
S7020 CB/HCP4A Bearing Typical Application Areas
The S7020 CB/HCP4A is ideally suited for high-performance applications, including:
- Machine Tool Spindles (High-speed milling, grinding, and turning centers)
- Precision Robotics and Automation Equipment
- High-Frequency Motors and Spindles
- Medical and Dental Equipment (e.g., high-speed handpieces)
- Aerospace Instrumentation and Test Rigs
