7001 ACDGA/P4A
7000 Series Super Precision Angular Contact Ball Bearings
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7001 ACDGA/P4A Bearing Product Overview & Core Advantages
The 7001 ACDGA/P4A is a single row angular contact ball bearing designed for applications requiring high precision and superior running accuracy. Positioned in the P4A tolerance class, it offers extremely tight dimensional tolerances for exceptional performance. Its key advantage lies in its ability to accommodate combined loads (radial and axial loads simultaneously) efficiently, thanks to its 25° contact angle. The bearing is universally matchable, allowing for flexible mounting in preloaded sets to achieve optimal system rigidity. With its compact bearing dimensions (12 mm bore, 28 mm OD, 8 mm width), it is ideal for space-constrained, high-speed applications.
7001 ACDGA/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7001 | Basic bearing series designation, indicating a metric, single row angular contact bearing with a 12mm bore and 28mm outside diameter. |
| AC | Angular Contact design with a 25° contact angle. |
| DGA | Specific internal design and manufacturing features for universal matching (SU). This allows bearings to be mounted in any combination (face-to-face, back-to-back, or tandem) to create a preloaded set. |
| P4A | Indicates an extra high precision tolerance class, exceeding ABEC 7 standards. This includes very tight tolerances on bore diameter, outside diameter, and width, ensuring minimal runout and vibration. |
7001 ACDGA/P4A Bearing Structural Features & Performance Benefits
High Precision & Rigidity: Manufactured to P4A tolerance class with a phenolic resin cage, this bearing ensures minimal vibration and high running accuracy, which is critical for high-speed operation. The universal matchable design enables the creation of preloaded arrangements (typically in sets of 2 or more), significantly increasing the system rigidity and rotational accuracy of the entire spindle or shaft.
Load Capacity & Speed: The 25° contact angle is optimized to handle significant axial loads in one direction while also supporting radial loads. The phenolic cage, combined with the high-grade chrome steel rings and balls, contributes to a high limiting speed of 110,000 rpm, making it suitable for demanding high-speed applications.
Operational Reliability: The open design allows for customized lubrication regimes. The specified operating temperature range is from -30°C to 110°C, ensuring stable performance under various environmental conditions.
7001 ACDGA/P4A Bearing Typical Application Areas
The 7001 ACDGA/P4A is engineered for high-performance machinery where precision and speed are paramount. Its typical applications include:
- Machine Tool Spindles: High-speed milling, grinding, and drilling spindles.
- Precision Instruments: Measuring devices, optical scanners, and coordinate measuring machines (CMM).
- High-Speed Motors: Spindles for PCB drilling and small precision motors.
- Robotics: High-accuracy joints and arm assemblies.
