S71906 ACDGA/HCP4A
Hybrid Ceramic Super Precision Bearings
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S71906 ACDGA/HCP4A Bearing Product Overview & Core Advantages
The S71906 ACDGA/HCP4A is a super-precision angular contact ball bearing designed for the most demanding high-speed and high-rigidity applications. As a single bearing from a universally matchable (SU) set, it excels at handling combined loads, including radial loads and axial loads in one direction. Its construction with a phenolic cage and ceramic balls enables exceptional limiting speeds and minimal heat generation, making it ideal for high-precision spindles and other machinery requiring extreme accuracy and reliability.
S71906 ACDGA/HCP4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| S | Super-precision bearing |
| 7 | Angular contact ball bearing |
| 1906 | Bore diameter: 30 mm, Outside diameter: 47 mm, Width: 9 mm |
| AC | 25° contact angle |
| D | Two-piece phenolic (resin) cage |
| GA | Preload: Extra light / Class A |
| HC | Hybrid ceramic balls (ceramic balls, steel rings) |
| P4A | Tolerance class P4A (geometric tolerances tighter than ABEC 7) |
S71906 ACDGA/HCP4A Bearing Structural Features & Performance Benefits
Hybrid Ceramic Design: The use of ceramic balls significantly reduces centrifugal forces and friction, enabling higher limiting speeds (100,500 rpm) and lower operating temperatures compared to all-steel bearings. This also enhances electrical resistance and longevity.
High Rigidity & Precision: The 25° contact angle and P4A tolerance class provide superior running accuracy and system rigidity, which is critical for applications requiring minimal runout and high positional accuracy.
Optimized High-Speed Cage: The lightweight phenolic cage offers excellent strength and guidance at high speeds, contributing to smooth operation and reduced vibration.
Universal Matchability (SU): This bearing is part of a universally matchable set, allowing for flexible mounting arrangements (DB, DF, DT) to handle various load configurations without the need for selective assembly, simplifying inventory and installation.
S71906 ACDGA/HCP4A Bearing Typical Application Areas
The S71906 ACDGA/HCP4A is ideally suited for high-performance applications where speed, precision, and rigidity are paramount. Key industries and equipment include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Instrumentation: High-speed measuring and testing equipment.
- Semiconductor Manufacturing: Wafer handling robots and precision stages.
- Aerospace & Defense: Gyroscopes, radar systems, and auxiliary power units.
