71922 CE/HCP4ADT
Hybrid Ceramic Super Precision Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
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71922 CE/HCP4ADT Bearing Product Overview & Core Advantages
The 71922 CE/HCP4ADT is a precision angular contact ball bearing designed for demanding applications requiring exceptional performance. This duplex tandem (DT) arrangement consists of two preloaded bearings, offering superior axial rigidity and the ability to withstand heavy thrust loads in one direction. Manufactured to P4A tolerance class, it guarantees extremely high running accuracy. The combination of a ceramic ball material and phenolic cage enables outstanding high-speed performance, with a limiting speed of 16,250 rpm. This bearing is pre-lubricated for immediate operation and is engineered for high reliability in precision machinery.
71922 CE/HCP4ADT Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning | Benefit |
|---|---|---|
| 71922 | Basic bearing series and size designation (110mm bore, 150mm OD, 40mm width). | Defines the core bearing dimensions. |
| CE | Contact angle of 15°. | Optimized for handling combined loads (radial and axial). |
| HC | Hybrid Ceramic (Silicon Nitride) balls. | Reduced weight, lower friction, and extended service life at high speeds. |
| P4A | High-Precision Tolerance Class. | Ensures minimal runout and vibration for superior precision in the application. |
| DT | Duplex Tandem Arrangement. | Two bearings mounted together to provide maximum axial stiffness and thrust load capacity. |
71922 CE/HCP4ADT Bearing Structural Features & Performance Benefits
- Duplex Tandem Design & Preload: The two bearings are preloaded in a tandem configuration, eliminating internal clearance. This creates an exceptionally rigid bearing system that is resistant to deflection under heavy axial loads, ensuring precise shaft positioning.
- Hybrid Ceramic Construction: The use of ceramic balls provides significant advantages. They are lighter and harder than steel, reducing centrifugal forces and allowing for higher limiting speeds. This also contributes to lower operating temperatures and increased bearing service life.
- High-Speed Phenolic Cage: The phenolic resin cage is lightweight and possesses excellent slip characteristics, making it ideal for high-speed applications. It offers good strength and operates effectively within the specified temperature range.
- Precision P4A Tolerances: Manufactured to P4A tolerance class, this bearing ensures extremely tight dimensional and running accuracy. This is critical for applications requiring minimal vibration and high rotational precision.
71922 CE/HCP4ADT Bearing Typical Application Areas
The 71922 CE/HCP4ADT is engineered for high-performance machinery where speed, precision, and rigidity are paramount. Key application sectors include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Robotics: Arm joints and high-accuracy positioning systems.
- Aerospace & Defense: Gyroscopes, radar systems, and auxiliary power units (APUs).
- High-Frequency Motors and Spindles: Used in PCB drilling and semiconductor manufacturing equipment.
