S7017 ACD/P4ATGA
Sealed Super Precision Angular Contact Ball Bearings
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S7017 ACD/P4ATGA Bearing Product Overview & Core Advantages
The S7017 ACD/P4ATGA is a precision double row angular contact ball bearing designed for applications demanding exceptional rigidity and running accuracy. Engineered to a P4A tolerance class, it is ideally suited for high-speed spindles and other precision machinery. Its fundamental advantage lies in its ability to simultaneously support substantial combined loads (radial and axial) in both directions, eliminating the need for complex bearing arrangements. The compact double row design provides a high degree of stiffness in a single bearing unit, making it a reliable and space-efficient solution for high-performance applications.
S7017 ACD/P4ATGA Bearing Model Code Explained, Specifications & Naming Convention
The model number S7017 ACD/P4ATGA provides detailed technical specifications:
- S: Denotes a universal matchable bearing, allowing for flexible mounting configurations in sets.
- 7017: Standard designation indicating a 85 mm bore, 130 mm OD bearing.
- ACD: Signifies a 25° contact angle and an Extra Light (A) preload, optimized for high-speed operation and minimal deflection.
- P4A: The tolerance class, indicating extremely high dimensional and running accuracy, superior to ABEC 7.
- TGA: Specifies the cage material (Phenolic) and factory-applied grease lubrication suitable for the specified temperature range.
S7017 ACD/P4ATGA Bearing Structural Features & Performance Benefits
The performance of the S7017 ACD/P4ATGA is a direct result of its advanced construction:
- High Rigidity & Load Capacity: The double row ball complement and 25° contact angle provide superior resistance to moment loads and high combined load capacity, ensuring stable shaft positioning.
- Precision & High-Speed Performance: Manufactured to P4A tolerances with an extra light preload, this bearing minimizes vibration and heat generation. The lightweight phenolic cage is essential for maintaining stability and reducing centrifugal forces at the limiting speed of 17,000 rpm.
- Sealed & Pre-Lubricated: As a sealed bearing with factory-applied grease, it is protected from contamination and is ready for immediate use, offering long-term, maintenance-free operation within its specified temperature range.
- Universal Matchability (SU): Bearings are universally matchable, allowing for simplified mounting in any combination (back-to-back, face-to-face, or tandem) to achieve the required stiffness and load distribution.
S7017 ACD/P4ATGA Bearing Typical Application Areas
This high-precision, high-rigidity bearing is critical in advanced machinery, including:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Spindles: PCB drilling machines and other high-precision automated equipment.
- High-Frequency Motors: Spindles for applications requiring exceptional rotational accuracy.
- Robotics: High-accuracy joints and rotary axes.
