7022 ACE/HCP4AQBCA
Hybrid Ceramic Super Precision Bearings
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7022 ACE/HCP4AQBCA Bearing Product Overview & Core Advantages
The 7022 ACE/HCP4AQBCA is a precision quadruplex matched set of angular contact ball bearings designed for the most demanding applications. This P4A tolerance class set, arranged in a Back-to-Back (QBC) configuration, delivers exceptional system rigidity and stability. Its core advantages include the ability to handle significant combined loads (radial and axial), facilitated by a 25° contact angle. The use of ceramic balls and a phenolic cage contributes to superior high-speed performance, with a limiting speed of 16,250 rpm, making it ideal for ultra-precise, high-rigidity spindle systems.
7022 ACE/HCP4AQBCA Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning | Significance |
|---|---|---|
| 7022 | Basic Bearing Series & Size | Denotes a 110 mm bore, 170 mm OD metric bearing. |
| ACE | 25° Contact Angle & Enhanced Design | Optimized for high axial load capacity and rigidity. |
| HC | Hybrid Ceramic | Indicates the use of ceramic balls for reduced weight, lower friction, and higher speed capability. |
| P4A | Tolerance Class | Denotes high precision tolerances for bore, OD, and width, ensuring minimal runout and superior rotational accuracy. |
| QBC | Quadruplex Back-to-Back | Specifies a matched set of 4 bearings in a back-to-back arrangement. This configuration provides high moment stiffness and excellent operational stability. |
7022 ACE/HCP4AQBCA Bearing Structural Features & Performance Benefits
Unmatched Rigidity and Load Capacity: The quadruplex back-to-back (QBC) arrangement is the cornerstone of this bearing set's performance. By preloading four bearings together, it creates an extremely rigid bearing system that can withstand heavy combined radial and axial loads and significant overturning moments, which is critical for maintaining precision under load.
Superior High-Speed Performance: The combination of hybrid ceramic balls and a lightweight phenolic resin cage is engineered for high-speed applications. Ceramic balls reduce centrifugal forces and friction, while the phenolic cage offers excellent strength-to-weight ratio and smooth operation at the 16,250 rpm limiting speed.
Pre-optimized for Precision: As a factory-matched set in P4A tolerance, these bearings are supplied with consistent internal clearances and optimized preload. This eliminates the need for selective fitting by the end-user, ensuring immediate peak performance, reduced vibration, and enhanced rotational accuracy in the final assembly.
7022 ACE/HCP4AQBCA Bearing Typical Application Areas
This high-performance bearing set is specifically engineered for advanced machinery requiring the utmost precision, speed, and rigidity.
- High-Frequency CNC Machining Spindles
- Precision Grinding Spindles
- High-performance Machine Tool Axes
- Advanced Aerospace & Defense Systems
- High-speed Robotic Actuators
