71904 CE/P4ADBA
71900 Series Super Precision Angular Contact Ball Bearings
Image may differ from product. See technical specification for details.
Basic Information
Main Dimensions
Ball & Washer Dimensions
Performance
Materials
- Fast delivery
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
71904 CE/P4ADBA Bearing Product Overview & Core Advantages
The 71904 CE/P4ADBA is a super-precision angular contact ball bearing designed for applications demanding exceptional rotational accuracy and rigidity. This metric-series bearing features a duplex back-to-back (DB) arrangement and an extra light preload (Class A), making it ideal for high-speed spindles and precision machinery. Its primary advantage lies in its ability to handle combined loads (radial and axial) simultaneously while maintaining high running accuracy and thermal stability due to its matched set configuration.
71904 CE/P4ADBA Bearing Model Code Explained, Specifications & Naming Convention
- 71904: Basic bearing series designation for super-precision angular contact bearings
- C: 15° contact angle, optimized for high-speed applications
- E: High-precision internal design with optimized internal geometry
- P4A: Ultra-precision tolerance class exceeding ABEC 7 standards
- DB: Duplex Back-to-Back arrangement for improved moment load capacity and rigidity
- A: Extra light preload classification for minimal friction at high speeds
71904 CE/P4ADBA Bearing Structural Features & Performance Benefits
High Rigidity & Stability: The duplex back-to-back arrangement creates a wide effective spread between load centers, significantly enhancing moment stiffness and operational stability under complex loading conditions.
Superior Precision: Manufactured to P4A tolerance class with bore and outside diameter tolerances of -0.004mm to 0, ensuring exceptional running accuracy and minimal vibration.
High-Speed Capability: The 15° contact angle and phenolic resin cage enable stable operation at limiting speeds up to 100,000 rpm, while the extra light preload minimizes heat generation.
Premium Material Construction: Manufactured from chrome steel for both rings and balls, providing excellent wear resistance and durability in demanding applications.
Optimized Load Capacity: With a dynamic load rating of 1784 lbf and static load rating of 1069 lbf, this bearing delivers reliable performance under significant operational stresses.
71904 CE/P4ADBA Bearing Typical Application Areas
The 71904 CE/P4ADBA is specifically engineered for high-performance applications including:
- Machine tool spindles for CNC machining centers and grinding machines
- High-speed machining centers requiring exceptional precision and rigidity
- Precision rotary tables and indexing systems
- Medical equipment spindles for dental and surgical devices
- Aerospace positioning systems requiring ultra-precise motion control
- Semiconductor manufacturing equipment with demanding accuracy requirements
