7030 ACDGA/P4A
7000 Series Super Precision Angular Contact Ball Bearings
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7030 ACDGA/P4A Bearing Product Overview & Core Advantages
The 7030 ACDGA/P4A is a single row angular contact ball bearing designed for high-precision applications requiring exceptional rotational accuracy and rigidity. Manufactured to P4A tolerance class, it guarantees minimal dimensional runout and smooth operation. Its key advantage lies in its ability to carry significant combined loads (radial and axial loads simultaneously) due to its 25° contact angle. This bearing is pre-lubricated and features an open seal type for applications where controlled re-lubrication is possible, making it ideal for high-speed spindles and other demanding machinery.
7030 ACDGA/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7030 | Basic bearing series, indicating a 150mm bore and 225mm outside diameter. |
| AC | Angular Contact design. |
| DGA | Specific internal design and contact angle (25°). |
| P4A | Super Precision tolerance class, exceeding ABEC 7/ISO P4 standards, ensuring extremely tight dimensional and running accuracy. |
7030 ACDGA/P4A Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The 25° contact angle and robust construction using chrome steel rings and balls enable the bearing to handle high combined loads effectively, providing stable and rigid support for spindles.
- High-Speed Performance: The lightweight phenolic cage reduces centrifugal forces, contributing to a high limiting speed of 11,000 rpm. The open design allows for optimized lubrication flow and heat dissipation.
- Precision Engineering: The P4A tolerance class ensures minimal vibration and noise, which is critical for applications demanding high surface finish and positional accuracy.
- Universal Matching (SU): This bearing is universally matchable, allowing two bearings to be paired in a back-to-back (DB) or face-to-face (DF) arrangement without selective mounting, simplifying installation and optimizing preload and system stiffness.
7030 ACDGA/P4A Bearing Typical Application Areas
The 7030 ACDGA/P4A is engineered for high-performance machinery where precision and speed are paramount. Its typical applications include:
- Machine Tool Spindles (CNC machining centers, grinding spindles)
- High-Frequency Motors
- Precision Robotic Drives
- Aerospace & Defense Positioning Systems
