7011 ACE/HCP4ADT
Hybrid Ceramic Super Precision Bearings
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7011 ACE/HCP4ADT Bearing Product Overview & Core Advantages
The 7011 ACE/HCP4ADT is a precision angular contact ball bearing designed for demanding applications requiring exceptional performance. This duplex tandem (DT) arrangement features two preloaded bearings, delivering superior high rigidity and the ability to handle significant combined loads. Manufactured to a P4A tolerance class with a ceramic ball and phenolic cage construction, it is engineered for high-speed operation and reliable performance in precision machinery.
Model Code Breakdown
| Code Segment | Technical Meaning |
|---|---|
| 7011 | Basic bearing series and size designation |
| ACE | Angular Contact design with a 25° contact angle |
| HC | Hybrid Ceramic construction (steel rings with ceramic balls) |
| P4A | High precision tolerance class |
| ADT | Arrangement: Duplex Tandem (two bearings mounted in tandem) |
7011 ACE/HCP4ADT Bearing Structural Features & Performance Benefits
High Rigidity & Load Capacity: The duplex tandem arrangement and 25° contact angle create an exceptionally stiff bearing set, capable of withstanding heavy combined radial and axial loads in one direction.
High-Speed Performance: The combination of lightweight phenolic resin cage and low-friction ceramic balls (Si3N4) significantly reduces centrifugal forces and operating temperatures, enabling a high limiting speed of 34,000 rpm.
Precision & Longevity: Manufactured to P4A tolerance class, this bearing ensures minimal runout and vibration. The hybrid ceramic construction offers increased durability, reduced wear, and extended service life compared to all-steel bearings.
Preload & Stability: The set is supplied with a preload applied, eliminating internal clearance and providing precise shaft positioning, improved rotational accuracy, and enhanced system stability.
7011 ACE/HCP4ADT Bearing Typical Application Areas
The 7011 ACE/HCP4ADT is ideally suited for high-performance applications where precision, speed, and rigidity are critical. Key industries and equipment include:
- Machine Tool Spindles: High-speed machining centers, grinding spindles.
- Precision Robotics: Arm joints and high-accuracy rotary axes.
- High-Frequency Motors & Spindles: PCB drilling spindles, dental handpieces.
- Aerospace & Defense Systems: Gyroscopes, radar positioning systems.
