7017 ACD/P4ATBTC
7000 Series Super Precision Angular Contact Ball Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
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Materials
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Product Overview and Core Advantages
The 7017 ACD/P4ATBTC is a precision angular contact ball bearing configured as a triplex back-to-back (TBT) matched set. Engineered for applications demanding exceptional rotational accuracy and rigidity, this bearing set is designed to accommodate combined loads (radial and axial) simultaneously. Its P4A tolerance class ensures ultra-precise running accuracy, while the moderate preload (Class C) provides optimal stiffness and minimizes deflection under operational stresses. This configuration is ideal for high-performance machinery requiring superior positional accuracy and long-term reliability.
7017 ACD/P4ATBTC Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7017 | Standard bearing series designation, indicating a 85 mm bore, 130 mm OD, and 66 mm width. |
| ACD | Angular Contact design with a 25° contact angle for optimal axial load capacity. |
| P4A | Indicates a high-precision tolerance class, superior to ABEC-7, ensuring minimal runout and vibration. |
| TBT | Specifies the bearing arrangement as a Triplex Back-to-Back matched set of three bearings. |
| C | Denotes a Moderate Preload for enhanced system rigidity and precise shaft positioning. |
Structural Features and Performance Benefits
High Rigidity and Stability: The triplex back-to-back arrangement creates a highly rigid bearing system that effectively resists moment loads and shaft deflection, which is critical for maintaining precision under heavy combined loads.
Superior Load Capacity: With a 25° contact angle and three bearings in a set, this configuration offers a high dynamic and static load rating (31,050 lbf dynamic / 41,850 lbf static), enabling it to handle significant radial and axial forces simultaneously.
High-Speed Capability: The phenolic cage is lightweight and robust, contributing to lower centrifugal forces and smoother operation at the limiting speed of 17,000 rpm. The open design and factory lubrication are optimized for these high-speed conditions.
Precision Engineering: Manufactured to P4A tolerance standards with tight dimensional controls on the bore, outer diameter, and width, this bearing ensures exceptional running accuracy and minimal vibration for demanding applications.
7017 ACD/P4ATBTC Bearing Typical Application Areas
The 7017 ACD/P4ATBTC is ideally suited for high-precision, high-rigidity applications, including:
- Machine Tool Spindles: For CNC milling machines, grinding spindles, and lathes requiring extreme accuracy and stiffness.
- High-Frequency Machining Centers: Where high rotational speeds and minimal runout are paramount.
- Precision Gearboxes: In robotics and aerospace applications that demand reliable performance under complex loading.
- Industrial Pumps and Compressors: For applications where shaft stability and bearing life are critical.
