S7017 ACD/P4ATBTC
Sealed Super Precision Angular Contact Ball Bearings
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S7017 ACD/P4ATBTC Bearing Product Overview & Core Advantages
The S7017 ACD/P4ATBTC is a precision angular contact ball bearing designed for high-performance industrial applications. This matched set bearing features a Triplex Back-to-Back (TBT) arrangement, providing exceptional system rigidity and stability. Engineered to a P4A tolerance class, it delivers superior running accuracy, making it ideal for applications demanding high rotational precision and reliability. Its primary advantage lies in its ability to handle combined loads—significant radial loads and thrust loads in both directions—simultaneously, offering a compact and highly reliable solution for complex load conditions.
S7017 ACD/P4ATBTC Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning | Significance |
|---|---|---|
| S7017 | Bearing Series & Size | Denotes a 85 mm bore, 130 mm OD, 66 mm width bearing from a high-precision series. |
| ACD | 25° Contact Angle | Optimized for handling combined radial and axial loads efficiently. |
| P4A | Tolerance Class | Indicates very high precision levels for running accuracy and dimensional stability. |
| TBT | Triplex Back-to-Back | Specifies a preloaded set of three bearings arranged back-to-back for maximum rigidity and moment load capacity. |
| C | Moderate Preload | Ensures optimal bearing stiffness and minimizes axial/radial play under operational conditions. |
S7017 ACD/P4ATBTC Bearing Structural Features & Performance Benefits
High Rigidity & Stability: The Triplex Back-to-Back (TBT) arrangement of three bearings creates an exceptionally stiff bearing system. This configuration is highly effective at resisting moment loads and maintaining shaft positioning under heavy combined loads, which is critical for the accuracy of high-precision machinery.
Superior Load Capacity: With a 25° contact angle and a robust design featuring 21 balls, this bearing is engineered to sustain high radial dynamic load ratings (31,050 lbf) and radial static load ratings (41,850 lbf). It is adept at managing complex load scenarios involving both radial and bidirectional axial forces.
Optimized High-Speed Performance: The lightweight and durable phenolic cage minimizes centrifugal forces, reduces friction, and contributes to a high limiting speed of 17,000 rpm. The grease lubrication is selected for stable performance across the operating temperature range.
Precision & Longevity: Manufactured to P4A tolerance standards with tight dimensional controls on the bore diameter, outside diameter, and width, this bearing ensures minimal runout and vibration. The sealed design protects the precision-ground chrome steel components from contaminants, enhancing service life.
S7017 ACD/P4ATBTC Bearing Typical Application Areas
This bearing is specifically designed for high-demand applications where precision, rigidity, and speed are paramount. Key industries and machinery include:
- Machine Tool Spindles: For high-speed milling, grinding, and turning centers requiring extreme accuracy and stiffness.
- Precision Gearboxes: Especially in industrial robotics and aerospace actuation systems.
- High-Frequency Motors and Spindles: Used in PCB drilling and semiconductor manufacturing equipment.
- Medical Equipment: Such as high-speed dental handpieces and imaging device rotors.
- Advanced Pumps and Compressors: Where reliable performance under combined loads is essential.
