7017 CD/HCP4ATBTA
Hybrid Ceramic Super Precision Bearings
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7017 CD/HCP4ATBTA Bearing Product Overview & Core Advantages
The 7017 CD/HCP4ATBTA is a precision angular contact ball bearing designed for demanding applications requiring exceptional accuracy and rigidity. This triplex back-to-back (TBT) matched set is engineered to handle combined loads and provide superior axial and radial stiffness. Its construction with ceramic balls and a P4A super-precision tolerance class makes it ideal for high-speed, high-reliability machinery where minimal runout and thermal stability are critical. The set is pre-lubricated for immediate operation.
7017 CD/HCP4ATBTA Bearing Model Code Explained, Specifications & Naming Convention
| 7017 | Basic bearing series, with 85 mm bore and 130 mm outside diameter. |
| CD | Indicates a universal matched bearing set with a specific preload and axial internal clearance. |
| HCP4A | Defines the tolerance class P4A (higher than ABEC 7/ISO P4) and the 15° contact angle. |
| TB | Signifies the Triplex Back-to-Back (TBT) arrangement of the three bearings in the set. |
| TA | Denotes the Extra Light (Class A) preload applied to the matched set. |
7017 CD/HCP4ATBTA Bearing Structural Features & Performance Benefits
High Rigidity & Load Capacity: The triplex back-to-back arrangement creates an extremely rigid bearing system capable of supporting heavy combined radial and axial loads from both directions, minimizing shaft deflection under operation.
High-Speed Performance: The combination of ceramic (Si3N4) balls, which are lighter and harder than steel, and a lightweight phenolic resin cage reduces centrifugal forces and friction, enabling a high limiting speed of 28,000 rpm. The 15° contact angle is optimized for high-speed applications requiring high rigidity.
Precision & Longevity: Manufactured to P4A super-precision tolerance standards, this bearing ensures minimal vibration and precise rotational accuracy. The open seal type allows for optimal lubrication management in controlled environments, while the chrome steel rings and ceramic balls offer excellent wear resistance and a long operational life.
7017 CD/HCP4ATBTA Bearing Typical Application Areas
This high-precision bearing set is ideally suited for:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Robotics: Arm joints and high-accuracy rotary axes.
- Aerospace & Defense Systems: Gyroscopes, radar platforms, and navigation instruments.
- High-Frequency Motors and Spindles: Where extreme rotational accuracy and thermal stability are paramount.
