7017 ACE/HCP4AH1DT
Hybrid Ceramic Super Precision Bearings
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7017 ACE/HCP4AH1DT Bearing Product Overview & Core Advantages
The 7017 ACE/HCP4AH1DT is a duplex tandem (DT) matched pair of Angular Contact Ball Bearings, engineered for the most demanding high-precision and high-speed applications. This preloaded set is designed to handle primarily axial loads in one direction with exceptional rigidity. The combination of a 25° contact angle, ceramic balls, and a P4A super-precision tolerance class delivers superior rotational accuracy, minimal heat generation, and extended service life, making it an ideal solution for high-performance spindles.
7017 ACE/HCP4AH1DT Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning | Significance |
|---|---|---|
| 7017 | Basic Bearing Series & Size | Specifies a metric series bearing with an 85mm bore, 130mm OD, and 44mm width. |
| ACE | Internal Design & Contact Angle | Denotes a specific internal geometry optimized for high-speed operation with a 25° contact angle. |
| HC | Hybrid Ceramic | Indicates the use of ceramic (silicon nitride) balls, which reduce friction, weight, and heat, enabling higher speeds. |
| P4A | Tolerance Class | Signifies super-precision tolerances (exceeding ABEC 7/ISO P4), ensuring extreme running accuracy and system stability. |
| H1 | Preload Level | Specifies a light preload, which increases bearing rigidity and minimizes axial/radial play for precise shaft positioning. |
| DT | Matched Arrangement | "Duplex Tandem" arrangement. Two bearings are mounted in tandem to share and handle high axial loads in a single direction. |
7017 ACE/HCP4AH1DT Bearing Structural Features & Performance Benefits
Duplex Tandem (DT) Design: The matched pair configuration is ground for tandem mounting, effectively creating a single, wider bearing capable of withstanding very high unidirectional axial loads. This setup provides maximum axial rigidity.
Hybrid Ceramic Construction: The combination of steel rings and ceramic balls significantly reduces centrifugal forces, friction, and operating temperature. This directly contributes to a higher limiting speed (17,000 rpm) and longer lubricant life.
Super-Precision P4A Tolerance: Manufactured to the tightest dimensional and running accuracy standards, this bearing ensures minimal vibration and superior performance in high-precision spindle applications.
Phenolic Resin Cage: The lightweight and robust phenolic cage offers excellent dimensional stability at high speeds and is well-suited for the demanding conditions of high-speed operation.
Optimized Load Capacity: With a dynamic load rating of 11,858 lbf and a static load rating of 12,600 lbf, this bearing set is built for durability and long-term reliability under significant loads.
7017 ACE/HCP4AH1DT Bearing Typical Application Areas
- Machine Tool Spindles: High-speed milling, grinding, and turning centers where precision, rigidity, and speed are critical.
- Precision Spindles: Applications in PCB drilling, semiconductor manufacturing, and other high-accuracy machining processes.
- High-Frequency Motors: Spindles for routers and other high-RPM electric motors.
- Aerospace & Defense Systems: Gyroscopes, radar systems, and other instrumentation requiring ultra-precise rotation.
