7017 ACDGA/HCP4AL
Hybrid Ceramic Super Precision Bearings
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Main Dimensions
Ball & Washer Dimensions
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7017 ACDGA/HCP4AL Bearing Product Overview & Core Advantages
The 7017 ACDGA/HCP4AL is a single-row angular contact ball bearing engineered for ultra-high precision and demanding performance. Positioned in the P4A super-precision tolerance class, it delivers exceptional rotational accuracy and dimensional stability. A key advantage is its universal matchable (SU) design, allowing bearings to be flexibly paired in various arrangements (back-to-back, face-to-face, or tandem) to optimize stiffness and load handling in complex applications. Its construction combines a phenolic resin cage and ceramic balls, contributing to lower friction, higher limiting speeds, and extended service life. This bearing is pre-lubricated and designed to handle combined loads, with a 25° contact angle providing excellent axial load capacity.
7017 ACDGA/HCP4AL Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning | Significance |
|---|---|---|
| 7017 | Standard bore diameter (85 mm) & series designation. | Defines the core bearing dimensions. |
| AC | Angular Contact design. | Optimized for combined radial and axial loads. |
| D | High Ball Complement. | Increases dynamic load rating. |
| GA | Light Preload (Class A). | Enhances rigidity and minimizes runout for precision applications. |
| HC | Hybrid Ceramic (Silicon Nitride balls). | Enables higher speeds, reduced weight, and longer life. |
| P4A | Super Precision Tolerance (ABEC 7 / ISO P4). | Guarantees extreme dimensional and running accuracy. |
| L | Light Lubrication. | Pre-lubricated for immediate operation, optimized for high-speed running. |
7017 ACDGA/HCP4AL Bearing Structural Features & Performance Benefits
Hybrid Ceramic Construction: The use of silicon nitride (Si3N4) ceramic balls significantly reduces centrifugal forces and friction, enabling a limiting speed of 17,000 rpm. This construction also provides superior electrical resistance, reduced thermal expansion, and extended lubricant life.
Phenolic Resin Cage (Retainer): The lightweight and robust phenolic cage contributes to smooth operation at high speeds, excellent dimensional stability, and compatibility with a wide range of lubricants.
High Load Capacity & Rigidity: The 25° contact angle and high ball complement (D) design provide excellent capacity for combined radial and axial loads. The light preload (GA) ensures high system rigidity, minimizing deflection under load for superior machining or positioning accuracy.
Ultra-Precision Performance: Manufactured to P4A tolerance class with tight dimensional controls on the bore, outside diameter, and width, this bearing ensures minimal vibration and precise rotational performance.
7017 ACDGA/HCP4AL Bearing Typical Application Areas
The 7017 ACDGA/HCP4AL is ideally suited for high-performance machinery requiring maximum precision and speed:
- High-Frequency Machine Tool Spindles: For CNC milling, grinding, and precision lathes.
- High-Speed Robotic Drives: In articulated arms and precision gearboxes.
- Aerospace & Defense Systems: Gyroscopes, radar systems, and avionics.
- Medical Equipment: Dental handpieces, centrifuges, and imaging scanners.
- Semiconductor Manufacturing Equipment: Wafer handling robots and precision stages.
