S7020 CD/P4ATBTA
Sealed Super Precision Angular Contact Ball Bearings
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S7020 CD/P4ATBTA Bearing Product Overview & Core Advantages
The S7020 CD/P4ATBTA is a metric system, P4A ultra-precision double row angular contact ball bearing. Engineered for applications demanding exceptional rotational accuracy and rigidity, its primary advantage lies in its triplex back-to-back (TBT) matched arrangement. This configuration provides superior stiffness and stability, enabling the bearing to effectively handle combined loads (radial and axial) from multiple directions simultaneously. The sealed design with phenolic cage and pre-lubrication ensures high reliability and long-term performance in demanding environments.
S7020 CD/P4ATBTA Bearing Model Code Explained, Specifications & Naming Convention
- S7020: Basic model number denoting a 100mm bore and 150mm outside diameter.
- CD: Indicates a 15° contact angle and specific internal design optimized for high precision.
- P4A: Denotes an ultra-precision tolerance class with extremely tight dimensional and running accuracy tolerances.
- TBT: Specifies the bearing is supplied as part of a Triplex Back-to-Back matched set of three bearings.
- TA: Indicates a universal matching designation, but in this specific configuration, it is part of a pre-set TBT triplex.
S7020 CD/P4ATBTA Bearing Structural Features & Performance Benefits
High Rigidity & Load Capacity: The double row design with a triplex back-to-back arrangement creates an exceptionally rigid support system. This structure significantly increases the bearing's capacity to withstand combined radial and moment loads, making it ideal for high-precision spindles.
Ultra-Precision Performance: Manufactured to P4A tolerance class, this bearing guarantees minimal runout and vibration, which is critical for achieving superior surface finishes and machining accuracy.
Optimized High-Speed Operation: The lightweight phenolic resin cage ensures smooth operation and stability at the specified limiting speed, reducing centrifugal forces and friction.
Sealed & Pre-Lubricated for Longevity: The integrated seals protect against contamination, and the factory-applied grease lubrication within a defined temperature range provides maintenance-free operation for extended periods.
S7020 CD/P4ATBTA Bearing Typical Application Areas
This high-precision bearing is specifically designed for the most demanding applications, including:
- High-Speed Machine Tool Spindles (e.g., for milling, grinding, and turning centers)
- Precision Grinding Spindles
- High-frequency Main Spindles
- Other precision rotary equipment requiring maximum rigidity and accuracy.
