S7020 ACD/P4ADBA
Sealed Super Precision Angular Contact Ball Bearings
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S7020 ACD/P4ADBA Bearing Product Overview & Core Advantages
The S7020 ACD/P4ADBA is a precision duplex pair of double row angular contact ball bearings designed for applications demanding exceptional rotational accuracy and rigidity. This pre-loaded, back-to-back (DB) arrangement is engineered to simultaneously handle significant combined loads, including radial loads and bidirectional axial loads. Manufactured to the stringent P4A tolerance class, it offers superior running accuracy, making it ideal for high-speed, high-precision, and high-reliability machinery where uncompromising performance is critical.
S7020 ACD/P4ADBA Bearing Model Code Explained, Specifications & Naming Convention
- S7020: Basic bearing series, indicating a 100mm bore, 150mm OD, and 48mm width.
- ACD: Signifies the bearing type and arrangement.
- A: Extra Light Preload (Class A), ensuring minimal deflection and smooth, quiet operation.
- C: Double Row Angular Contact design for high rigidity.
- D: Duplex Back-to-Back (DB) arrangement, providing high moment rigidity and stable operation under complex loads.
- P4A: Denotes the tolerance class, specifying extremely tight dimensional and running accuracy (superior to ABEC 7).
- DB: Confirms the Back-to-Back matched set configuration.
- A: Reiterates the Extra Light Preload classification.
S7020 ACD/P4ADBA Bearing Structural Features & Performance Benefits
High Rigidity & Load Capacity: The double row angular contact design and back-to-back duplex arrangement create an exceptionally stiff bearing system. This configuration provides robust support against moment loads and can accommodate heavy combined radial and axial loads from both directions.
Precision & High-Speed Performance: Built to P4A precision class standards with a phenolic resin cage, this bearing ensures minimal vibration and excellent stability. The optimized internal geometry and cage design contribute to its high limiting speed of 16,250 rpm.
Durability & Sealed for Life: Manufactured from high-grade chrome steel for both rings and balls, the bearing ensures long service life. It comes as a sealed unit pre-lubricated with grease, offering protection against contamination and providing maintenance-free operation within its specified temperature range.
S7020 ACD/P4ADBA Bearing Typical Application Areas
The S7020 ACD/P4ADBA is ideally suited for high-performance applications in:
- Machine Tool Spindles: For milling, grinding, and turning centers requiring high precision and rigidity.
- High-Speed Machining Centers: Where dynamic stability and accuracy are paramount.
- Precision Gearboxes and Pumps.
- Industrial Robotics: For critical joints and axes demanding high moment load capacity.
