71918 CE/P4ADGA
71900 Series Super Precision Angular Contact Ball Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
Performance
Materials
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71918 CE/P4ADGA Bearing Product Overview & Core Advantages
The 71918 CE/P4ADGA is a precision angular contact ball bearing designed for applications demanding exceptional accuracy and high-speed performance. Manufactured to P4A tolerance class, it offers superior dimensional stability and running accuracy. Its universal matchable (SU) design allows for flexible mounting in various preload configurations, while the extra light preload (Class A) ensures low operating torque and minimal heat generation, making it ideal for high-speed spindles and other precision machinery.
71918 CE/P4ADGA Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71918 | Basic bearing designation, indicating a high-precision, light series angular contact bearing. |
| CE | Enhanced internal design with a 15° contact angle, optimized for high-speed operation and combined loads. |
| P4A | Indicates a super-precision tolerance class with specific running accuracy requirements, exceeding standard P4 levels. |
| DGA | Specifies a phenolic resin cage and a universal matchable (SU) arrangement, enabling high-speed capability and flexible mounting. |
71918 CE/P4ADGA Bearing Structural Features & Performance Benefits
- High-Speed Capability: The lightweight phenolic cage (DGA) and optimized 15° contact angle significantly reduce centrifugal forces and friction, enabling a high limiting speed of 15,000 rpm.
- Superior Rigidity & Accuracy: Manufactured to P4A tolerance class with tight dimensional controls, this bearing provides excellent rotational accuracy and system stiffness for precision applications.
- Combined Load Capacity: The angular contact design efficiently supports combined radial and axial loads simultaneously, making it suitable for complex loading conditions.
- Universal Matching (SU): This feature allows two bearings to be mounted in tandem, back-to-back, or face-to-face arrangements to achieve the desired preload and rigidity without selective assembly.
- Premium Materials: Constructed from chrome steel for both rings and balls, ensuring high durability, wear resistance, and long service life under demanding conditions.
71918 CE/P4ADGA Bearing Typical Application Areas
The 71918 CE/P4ADGA is engineered for high-performance applications where speed, precision, and reliability are critical. Key industries and equipment include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Robotics: Arm joints and high-accuracy positioning systems.
- Medical Equipment: Dental handpieces, centrifuges, and imaging scanner rotors.
- Aerospace & Defense: Gyroscopes, radar systems, and navigation instruments.
- High-Frequency Motors & Spindles: Where minimal runout and high rotational speeds are required.
