71913 CE/HCPA9ADGA
Hybrid Ceramic Super Precision Bearings
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71913 CE/HCPA9ADGA Bearing Product Overview & Core Advantages
The 71913 CE/HCPA9ADGA is a precision angular contact ball bearing engineered for applications demanding exceptional accuracy and high-speed performance. As part of a universally matchable (SU) pair, it is designed to accommodate combined loads—simultaneously handling radial and axial forces. Its construction with a phenolic cage and ceramic balls contributes to lower friction, reduced weight, and superior performance at high rotational speeds. The extra light preload (Class A) ensures smooth, precise operation with minimal running torque, making it ideal for high-reliability, high-precision machinery.
71913 CE/HCPA9ADGA Bearing Model Code Explained, Specifications & Naming Convention
- 71913: Basic bearing designation indicating a light series, 65mm bore, 90mm OD.
- CE: Signifies the use of ceramic balls (typically Silicon Nitride, Si3N4).
- HC: Denotes a phenolic (Polyamide) cage.
- PA9A: Indicates the tolerance class PA9A, a very high-precision grade.
- DGA: Specifies the universal matchable (SU) arrangement and extra light preload (Class A).
71913 CE/HCPA9ADGA Bearing Structural Features & Performance Benefits
High-Speed Capability: The combination of a lightweight phenolic cage and low-density ceramic balls significantly reduces centrifugal forces, enabling the bearing to achieve a high limiting speed of 31,000 rpm. This design minimizes heat generation and ensures stable operation.
Precision & Rigidity: Manufactured to PA9A tolerance class, this bearing offers extremely tight dimensional and running accuracy. The 15° contact angle and universal matching capability allow for precise axial positioning and high system rigidity when mounted in pairs.
Reduced Friction & Long Life: Ceramic balls are harder and smoother than steel, leading to lower friction, reduced wear, and extended service life. They are also electrically insulating and resistant to corrosion.
Thermal Stability: The phenolic cage maintains its strength and dimensional stability across the specified operating temperature range of -30°C to 110°C.
71913 CE/HCPA9ADGA Bearing Typical Application Areas
This high-performance angular contact bearing is ideally suited for:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Robotics: Arm joints and high-accuracy positioning systems.
- High-Frequency Motors and Spindles: Where minimal vibration and high rotational accuracy are critical.
- Aerospace & Defense Systems: Gyroscopes, navigation instruments, and other critical rotating assemblies.
- Medical Equipment: Dental handpieces and imaging device rotors.
