71911 CEGA/HCPA9AL
Hybrid Ceramic Super Precision Bearings
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71911 CEGA/HCPA9AL Bearing Product Overview & Core Advantages
The 71911 CEGA/HCPA9AL is a high-precision angular contact ball bearing engineered for demanding applications requiring exceptional accuracy and performance. As a single bearing designed for universal matching (SU), it can be paired with another identical bearing to form a precisely preloaded set capable of handling combined loads. Its core advantages include superior running accuracy due to the PA9A tolerance class, high-speed capability enabled by a phenolic cage and ceramic balls, and reliable operation across a wide temperature range. This bearing is ideal for applications where high rigidity and minimal rotational error are critical.
71911 CEGA/HCPA9AL Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71911 | Bearing series and size designation |
| CE | 15° contact angle |
| GA | Light preload |
| HC | Hybrid ceramic balls |
| PA9A | High-precision tolerance class (exceeds ABEC 7) |
| L | Light preload designation |
71911 CEGA/HCPA9AL Bearing Structural Features & Performance Benefits
Hybrid Ceramic Construction: The use of ceramic balls significantly reduces weight and centrifugal forces, enabling higher limiting speeds (34,000 rpm) and reduced operating temperatures compared to all-steel designs. This construction also provides enhanced durability and longer service life.
Phenolic Cage: The lightweight and robust phenolic resin cage contributes to smooth operation at high speeds and offers excellent dimensional stability.
Precision Engineering: Manufactured to PA9A tolerance class, this bearing ensures minimal runout and vibration, which is crucial for high-precision applications. The 15° contact angle is optimized for high-speed operation while maintaining good radial load capacity.
Universal Matchable Design (SU): This feature allows two identical bearings to be mounted together in a back-to-back, face-to-face, or tandem arrangement to achieve the required stiffness and load-carrying capacity for the application.
71911 CEGA/HCPA9AL Bearing Typical Application Areas
The 71911 CEGA/HCPA9AL is ideally suited for high-performance machinery requiring superior precision and speed, including:
- Machine Tool Spindles: For high-speed milling, grinding, and turning centers.
- Precision Spindles: In PCB drilling, semiconductor manufacturing, and other precision machining equipment.
- High-Speed Motors: Used in electric motors and generators operating at extreme rotational speeds.
- Aerospace & Defense Systems: In gyroscopes, navigation systems, and other critical components.
