7204 ACD/P4ADBA
7200 & 7300 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
7204 ACD/P4ADBA Bearing Product Overview & Core Advantages
The 7204 ACD/P4ADBA is a precision duplex angular contact ball bearing designed for applications demanding exceptional rotational accuracy and rigidity. This matched back-to-back (DB) arrangement is preloaded to Extra Light (Class A) specifications, providing superior system stiffness and minimizing axial and radial runout. Its primary advantage lies in its ability to handle combined loads—significant radial and bidirectional axial loads—simultaneously, making it ideal for high-precision, high-speed spindles and other critical machinery components.
7204 ACD/P4ADBA Bearing Model Code Explained, Specifications & Naming Convention
- 7204: Basic designation indicating a medium-duty angular contact ball bearing series with a 20mm bore, 47mm OD, and 28mm width.
- ACD: Signifies a Duplex Back-to-Back (DB) arrangement of two bearings, providing high moment rigidity.
- P4A: Denotes an ultra-precision tolerance class exceeding ABEC 7 (P4), with specific focus on runout and dimensional stability.
- DBA: Indicates the Extra Light (Class A) preload applied to the matched set, optimizing rigidity for high-speed operation.
7204 ACD/P4ADBA Bearing Structural Features & Performance Benefits
High Rigidity & Stability: The duplex back-to-back (DB) configuration creates a wide, rigid support system that effectively resists moment loads and shaft deflection, ensuring precise rotational alignment.
Superior Load Capacity: With a 25° contact angle and optimized internal geometry, this bearing is engineered to support high combined radial and axial loads in both directions.
High-Speed Capability: The lightweight phenolic resin cage and precision P4A grading contribute to smooth operation and reduced centrifugal forces, enabling a high limiting speed of 100,500 rpm.
Precision Performance: Manufactured to P4A super-precision tolerances with bore and OD tolerances of -0.004mm to 0, this bearing guarantees minimal runout and vibration for exceptional application accuracy.
7204 ACD/P4ADBA Bearing Typical Application Areas
This bearing is specifically engineered for high-performance applications where precision, speed, and rigidity are paramount:
- Machine Tool Spindles (CNC machining centers, grinding spindles)
- High-Frequency Motors and Precision Spindles
- Robotic Arm Joints and Rotary Tables
- Medical Equipment (dental handpieces, imaging scanners)
- Aerospace Actuation Systems and Instrumentation
