71904 CD/P4ADGB
71900 Series Super Precision Angular Contact Ball Bearings
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71904 CD/P4ADGB Bearing Product Overview & Core Advantages
The 71904 CD/P4ADGB is a precision angular contact ball bearing designed for applications demanding exceptional rotational accuracy and rigidity. Operating under a P4A tolerance class, it guarantees minimal dimensional runout, making it ideal for high-precision spindles. Its universal matchable (SU) design allows two bearings to be paired in a back-to-back or face-to-face arrangement to support combined loads effectively. Preloaded to Light / Class B, this bearing offers optimized stiffness and reduced noise levels right from installation, eliminating the need for initial adjustment and ensuring high operational reliability in demanding environments.
71904 CD/P4ADGB Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning |
|---|---|
| CD | Indicates a 15° contact angle and specific internal design optimized for high-speed operation and high rigidity. |
| P4A | Denotes a high-precision tolerance class with enhanced dimensional and running accuracy requirements. |
| DGB | Signifies a Universal Matchable (SU) bearing pair, preloaded to Light / Class B and supplied as a matched set. |
71904 CD/P4ADGB Bearing Structural Features & Performance Benefits
- High Rigidity and Precision: The angular contact design with a 15° contact angle and P4A tolerance class ensures superior shaft positioning accuracy and system stiffness, critical for minimizing deflection under load.
- Optimized Load Capacity: Engineered to support significant combined radial and axial loads simultaneously. The universal matching (SU) capability allows for the creation of preloaded bearing arrangements that effectively handle complex load conditions.
- High-Speed Capability: The lightweight phenolic resin cage reduces centrifugal forces, enabling stable operation at the high limiting speed of 80,000 rpm. The open design facilitates efficient lubrication management.
- Ready-to-Install Performance: Supplied as a lubricated and preloaded matched set, the bearing delivers consistent performance from the start, reducing assembly time and ensuring immediate high running accuracy.
71904 CD/P4ADGB Bearing Typical Application Areas
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Drives: Servo motors, high-frequency spindles, and robotics.
- Medical Equipment: Dental handpieces and laboratory centrifuges.
- Aerospace Instrumentation: Gyroscopes and navigation systems.
