7004 ACDGB/P4A
7000 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
7004 ACDGB/P4A Bearing Product Overview & Core Advantages
The 7004 ACDGB/P4A is a high-precision angular contact ball bearing designed for applications demanding exceptional accuracy and rigidity. Engineered to accommodate combined loads (simultaneous radial and axial loads), this single bearing features a 25° contact angle and is supplied pre-lubricated and universally matchable. Its P4A tolerance class ensures ultra-precise running accuracy, making it ideal for high-speed spindles and other precision machinery where high rigidity and minimal runout are critical.
7004 ACDGB/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7004 | Basic bearing series, indicating a metric 20mm bore, 42mm OD, 12mm width. |
| AC | Angular Contact design with a 25° contact angle. |
| DGB | Universal Matchable (SU designation). Bearings are manufactured to universal tolerances allowing any bearing to be mounted with any other in a set without pre-selection. |
| P4A | High-Precision Tolerance Class. Exceeds ABEC 7 standards, specifying extremely tight limits for bore, OD, and width tolerances for superior running accuracy. |
7004 ACDGB/P4A Bearing Structural Features & Performance Benefits
High Rigidity and Load Capacity: The angular contact design with a 25° contact angle is optimized to support significant combined loads, providing high axial and radial stiffness for stable operation.
High-Speed Performance: The lightweight phenolic cage reduces centrifugal forces, enabling a high limiting speed of 103,000 rpm. This makes it an excellent choice for high-speed applications like machine tool spindles.
Precision Engineering: Manufactured to P4A tolerance class, this bearing guarantees minimal dimensional variation and exceptional running accuracy, which is critical for applications requiring high positional precision.
Universal Matching & Simplified Mounting: The Universal Matchable (DGB) feature allows any number of bearings to be mounted together without selective assembly, simplifying installation and reducing inventory requirements for preloaded stacks.
7004 ACDGB/P4A Bearing Typical Application Areas
- Machine Tool Spindles: High-precision milling, grinding, and turning centers.
- High-Speed Motors and Spindles: Applications demanding high rotational speeds and accuracy.
- Precision Instrumentation: Measuring devices and scientific equipment.
- Robotics: High-accuracy joints and arm assemblies.
