7017 ACD/HCP4ATBTA
Hybrid Ceramic Super Precision Bearings
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7017 ACD/HCP4ATBTA Bearing Product Overview & Core Advantages
The 7017 ACD/HCP4ATBTA is a high-precision angular contact ball bearing designed for demanding applications requiring exceptional rigidity and speed performance. This triplex back-to-back (TBT) matched set of three bearings delivers superior stiffness and load-carrying capacity, making it ideal for machine tool spindles and other high-performance machinery. Its ceramic ball construction and P4A tolerance class ensure outstanding dimensional accuracy and operational reliability under combined radial and axial loads.
7017 ACD/HCP4ATBTA Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7017 | Standard bearing series with 85mm bore, 130mm OD |
| ACD | Angular Contact Design with 25° contact angle |
| HC | Hybrid Ceramic (steel rings with ceramic balls) |
| P4A | High precision tolerance class (equivalent to ABEC 7) |
| TBT | Triplex Back-to-Back arrangement (3 bearings matched) |
| A | Extra light preload classification |
7017 ACD/HCP4ATBTA Bearing Structural Features & Performance Benefits
Enhanced Rigidity & Load Capacity: The triplex back-to-back configuration creates an exceptionally stiff bearing system capable of handling significant combined radial and axial loads from multiple directions. This arrangement provides superior moment stiffness for precision applications.
High-Speed Performance: Featuring phenolic resin cage and ceramic balls (Si3N4), this bearing achieves a limiting speed of 17,000 rpm. The hybrid construction reduces centrifugal forces, minimizes heat generation, and extends service life at high rotational speeds.
Precision Engineering: Manufactured to P4A tolerance class with bore and outside diameter tolerances of -0.004mm to 0, ensuring precise fitment and optimal running accuracy. The 25° contact angle provides balanced load distribution between radial and axial directions.
Thermal Stability: The ceramic ball material offers excellent thermal stability with an operating temperature range of -30°C to 110°C, maintaining dimensional stability under varying thermal conditions.
7017 ACD/HCP4ATBTA Bearing Typical Application Areas
- Machine Tool Spindles: High-speed machining centers, grinding spindles, and milling applications requiring extreme precision and rigidity
- Precision Robotics: Articulated arm joints and precision positioning systems demanding high stiffness and accuracy
- Aerospace Components: Aircraft auxiliary systems and flight control mechanisms requiring reliable high-speed operation
- Medical Equipment: High-speed dental handpieces and surgical drill systems where precision and reliability are critical
- Industrial Pumps & Compressors: High-performance centrifugal pumps and compressor systems operating at elevated speeds
