S7020 ACE/HCP4AQBCA
Hybrid Ceramic Super Precision Bearings
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Main Dimensions
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S7020 ACE/HCP4AQBCA Bearing Product Overview & Core Advantages
The S7020 ACE/HCP4AQBCA is a high-precision quadruplex matched angular contact ball bearing designed for the most demanding applications. Its core advantage lies in the back-to-back arrangement (QBC) of four individual bearings, creating an exceptionally rigid and stable system capable of handling complex combined loads (radial and axial) from multiple directions. Manufactured to P4A tolerance class and featuring ceramic balls, it delivers superior high-speed performance
S7020 ACE/HCP4AQBCA Bearing Model Code Explained, Specifications & Naming Convention
- S7020: Basic series designation for a 100mm bore, 150mm OD bearing.
- ACE: Signifies the bearing is supplied as a set (A) with a 25° contact angle (C) and pre-greased (E).
- HC: Denotes the use of Hybrid Ceramic components (ceramic balls with steel rings).
- P4A: Indicates a super-precision tolerance class, exceeding ABEC 7/ISO P4 standards.
- QBC: Defines the matched arrangement as Quadruplex Back-to-Back.
S7020 ACE/HCP4AQBCA Bearing Structural Features & Performance Benefits
Exceptional Rigidity and Load Capacity: The quadruplex back-to-back (QBC) configuration provides immense system stiffness, effectively resisting moment loads and ensuring precise shaft positioning under heavy combined loads.
Superior High-Speed Capability: The combination of hybrid ceramic balls (lighter, harder, and more thermally stable than steel) and a phenolic cage significantly reduces centrifugal forces and friction, enabling a high limiting speed of 16,250 rpm.
Precision and Longevity: The P4A tolerance class guarantees minimal runout and vibration for ultra-smooth operation. The sealed design with factory-applied grease lubrication protects against contamination and provides reliable operation within a temperature range of -30°C to 110°C.
S7020 ACE/HCP4AQBCA Bearing Typical Application Areas
This bearing is engineered for high-performance machinery where maximum rigidity, speed, and precision are non-negotiable. Key applications include:
- High-Speed Machine Tool Spindles
- Precision Grinding Spindles
- Industrial High-Frequency Motors
- Aerospace and Defense Systems
- Advanced Robotics and Automation
