7020 ACD/HCP4ATBTB
Hybrid Ceramic Super Precision Bearings
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7020 ACD/HCP4ATBTB Bearing Product Overview & Core Advantages
The 7020 ACD/HCP4ATBTB is a high-precision angular contact ball bearing supplied as a triplex back-to-back (TBT) matched set. Engineered for applications demanding exceptional rotational accuracy and rigidity, this bearing configuration is designed to handle significant combined loads (radial and axial) simultaneously. The use of ceramic balls and a P4A super-precision tolerance class ensures low heat generation, minimal vibration, and extended service life, making it ideal for high-speed and high-reliability machinery.
7020 ACD/HCP4ATBTB Bearing Model Code Explained, Specifications & Naming Convention
- 7020: Basic series number, indicating a 100mm bore and 150mm outside diameter.
- ACD: Angular Contact design with a 25° contact angle.
- HC: Denotes the use of Hybrid Ceramic balls (silicon nitride).
- P4A: Specifies a super-precision tolerance class exceeding ABEC 7/ISO P4 standards.
- TBT: Identifies the bearing as part of a Triplex Back-to-Back preloaded set.
- B: Indicates a Light preload (Class B) for optimal rigidity and speed performance.
7020 ACD/HCP4ATBTB Bearing Structural Features & Performance Benefits
Unmatched Rigidity and Load Capacity: The triplex back-to-back arrangement creates an extremely rigid bearing system, capable of withstanding heavy combined loads and moments. This configuration provides superior stability for spindles and shafts under complex loading conditions.
Enhanced High-Speed Performance: The combination of ceramic balls (lighter and harder than steel) and a phenolic cage reduces centrifugal forces and friction, enabling higher limiting speeds (15,000 rpm) and lower operating temperatures.
Precision and Longevity: Manufactured to P4A tolerance standards, this bearing ensures precise running accuracy. The open design is supplied lubricated, ready for integration into a centralized lubrication system for consistent performance across its operating temperature range.
7020 ACD/HCP4ATBTB Bearing Typical Application Areas
This high-performance bearing set is specifically designed for advanced machinery requiring maximum precision and speed, including:
- Machine Tool Spindles (High-speed milling, grinding, and turning centers)
- Precision Grinding Spindles
- High-Frequency Machining Centers
- Industrial Pumps and Compressors
