7020 CD/HCPA9AQBCG86
Hybrid Ceramic Super Precision Bearings
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7020 CD/HCPA9AQBCG86 Bearing Product Overview & Core Advantages
The 7020 CD/HCPA9AQBCG86 is a high-precision quadruplex matched angular contact ball bearing designed for applications demanding exceptional rigidity and accuracy. This metric system bearing features a Back-to-Back (QBC) matched arrangement of four bearings, providing superior stability and the ability to withstand complex combined loads, including significant radial and axial forces. Manufactured to an ultra-precise PA9A tolerance class and preloaded for immediate high performance, it is engineered for high-rigidity support in the most demanding high-speed and high-precision machinery.
7020 CD/HCPA9AQBCG86 Bearing Model Code Explained, Specifications & Naming Convention
- 7020: Basic designation indicating a 100 mm bore and 150 mm outside diameter.
- CD: Internal design code signifying specific internal geometry and contact angle.
- HC: Denotes the use of Hybrid Ceramic components (Ceramic balls with steel rings).
- PA9A: Specifies the ultra-high precision tolerance class for both bore and outside diameter.
- QBC: Identifies the bearing as part of a Quadruplex (4 bearings) matched set in a Back-to-Back arrangement.
- G86: Code indicating a specific preload level applied to the matched set.
7020 CD/HCPA9AQBCG86 Bearing Structural Features & Performance Benefits
Unmatched Rigidity and Load Capacity: The Quadruplex Back-to-Back (QBC) arrangement creates an extremely stiff bearing system, ideal for countering moment loads and providing exceptional operational stability under heavy combined loads.
High-Speed & Thermal Performance: The combination of a lightweight phenolic resin cage and hybrid ceramic construction (steel rings with ceramic balls) significantly reduces centrifugal forces and friction, enabling higher limiting speeds and reduced heat generation.
Ultra-Precision Operation: Manufactured to the stringent PA9A tolerance class and supplied as a preloaded set, this bearing ensures minimal runout and consistent, precise rotational accuracy right from installation.
Pre-Lubricated for Immediate Service: The bearing is pre-lubricated, facilitating quick and easy installation and ensuring immediate, reliable operation within its specified temperature range.
7020 CD/HCPA9AQBCG86 Bearing Typical Application Areas
This bearing is specifically engineered for high-end applications where precision, speed, and rigidity are paramount. Key industries and equipment include:
- High-Speed Machine Tool Spindles (e.g., for milling, grinding, and machining centers)
- Precision Robotics and automated handling systems
- Aerospace & Defense instrumentation and control systems
- High-performance Medical Imaging Equipment (e.g., CT scanner gantries)
- Semiconductor Manufacturing Equipment (e.g., wafer handling robots)
