7017 ACDGA/HCP4A
Hybrid Ceramic Super Precision Bearings
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7017 ACDGA/HCP4A Bearing Product Overview & Core Advantages
The 7017 ACDGA/HCP4A is a single-row angular contact ball bearing engineered for applications demanding ultra-high precision and superior performance. Positioned in the P4A tolerance class, it guarantees exceptional dimensional and running accuracy. Its core advantage lies in its ability to accommodate combined loads, specifically high radial loads and substantial unidirectional axial loads, facilitated by its 25° contact angle. The combination of a ceramic ball material and a phenolic cage contributes to its high-speed capability, low friction, and extended service life, making it ideal for high-reliability, precision machinery.
7017 ACDGA/HCP4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7017 | Standard bore diameter (85 mm) and outside diameter (130 mm) designation. |
| AC | Angular Contact design with a 25° contact angle. |
| DGA | Universal Matchable (SU) bearing. Two bearings can be paired face-to-face, back-to-back, or in tandem to accommodate various load conditions. |
| HCP4A | Combination code indicating P4A tolerance class (high precision) and specific internal radial clearance. |
7017 ACDGA/HCP4A Bearing Structural Features & Performance Benefits
High-Precision Construction: Manufactured to P4A tolerance class with extremely tight dimensional tolerances on the bore, outside diameter, and width, ensuring minimal runout and superior rotational accuracy.
Advanced Material Combination: The use of ceramic balls significantly reduces weight, friction, and heat generation, while offering excellent resistance to wear and corrosion. The phenolic cage is lightweight and robust, contributing to smooth operation at high speeds (up to 17,000 rpm).
Superior Load Capacity: The 25° contact angle is optimized to handle significant combined radial and axial loads simultaneously. The bearing comes with an Extra light (Class A) preload, providing high rigidity and precise shaft positioning with minimal friction.
Universal Matching Capability: As a Universal Matchable (SU) bearing, it can be precisely paired with other identical bearings to form a matched set, simplifying assembly and optimizing system performance for complex load scenarios.
7017 ACDGA/HCP4A Bearing Typical Application Areas
The 7017 ACDGA/HCP4A is designed for the most demanding precision applications, including:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers requiring extreme accuracy and rigidity.
- Precision Robotics: Arm joints and rotary actuators where high positional accuracy and dynamic response are critical.
- High-Frequency Motors and Spindles: Applications demanding low vibration and stable operation at very high rotational speeds.
- Medical and Laboratory Equipment: Centrifuges and imaging devices that require quiet, reliable, and precise bearing performance.
