S71906 CDGA/HCP4A
Hybrid Ceramic Super Precision Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
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S71906 CDGA/HCP4A Bearing Product Overview & Core Advantages
The S71906 CDGA/HCP4A is a high-precision angular contact ball bearing engineered for demanding applications requiring exceptional accuracy and performance. This sealed, single-row bearing features a 15-degree contact angle and an Extra Light (A) preload, making it ideal for systems requiring high rigidity and minimal deflection under combined loads. Its construction with ceramic balls and a phenolic cage enables superior high-speed performance, while the integrated seals and grease lubrication ensure long-term, maintenance-free operation. This bearing is part of a universally matchable set, allowing for precise preload configuration in complex arrangements.
S71906 CDGA/HCP4A Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning | Performance Implication |
|---|---|---|
| 71906 | Standard designation for a single-row, angular contact ball bearing with a 30mm bore, 47mm OD, and 9mm width. | Defines the core bearing dimensions and type. |
| C | 15-degree contact angle. | Optimized for handling combined radial and axial loads. |
| DG | Universal Matchable (SU) bearing designation. | Can be mounted in tandem, back-to-back, or face-to-face arrangements with other universal match bearings to achieve specific preload and stiffness. |
| A | Extra Light preload class. | Provides minimal running torque and reduced heat generation, ideal for high-speed applications. |
| HCP4A | Combined suffix: HC (Hybrid Ceramic with phenolic cage), P4A (High Precision Tolerance Class). | HC signifies ceramic balls and a lightweight phenolic cage for superior speed and reduced inertia. P4A denotes extremely tight dimensional and running accuracy tolerances. |
S71906 CDGA/HCP4A Bearing Structural Features & Performance Benefits
- Hybrid Ceramic Construction: The use of ceramic balls significantly reduces weight, centrifugal force, and friction, enabling a limiting speed of 100,500 rpm. This construction also offers superior resistance to wear and thermal deformation.
- Phenolic Resin Cage: This lightweight, high-strength cage contributes to the bearing's exceptional high-speed capability and smooth operation with minimal vibration.
- Extra Light Preload (Class A): This internal preload ensures high shaft positioning accuracy and system rigidity from startup, minimizing deflection under combined loads.
- P4A Precision Tolerance: Manufactured to ABEC 7 / ISO P4A standards, this bearing guarantees precise running accuracy, low noise, and consistent performance in high-precision spindles.
- Sealed & Grease-Lubricated: The integral seals protect against contamination, and the factory-applied grease provides reliable lubrication across a temperature range of -30°C to 110°C, offering a maintenance-free solution.
S71906 CDGA/HCP4A Bearing Typical Application Areas
The S71906 CDGA/HCP4A is designed for high-performance machinery where speed, precision, and reliability are critical. Its primary applications include:
- Machine Tool Spindles: High-speed milling, grinding, and drilling spindles.
- Precision Robotics: Arm joints and high-accuracy rotary axes.
- Semiconductor Manufacturing Equipment: Wafer handling robots and precision stages.
- Medical Equipment: High-speed dental handpieces and laboratory centrifuges.
- Aerospace Instrumentation: Gyroscopes and navigation system components.
