7000 ACDGA/P4A
7000 Series Super Precision Angular Contact Ball Bearings
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7000 ACDGA/P4A Bearing Product Overview & Core Advantages
The 7000 ACDGA/P4A is a high-precision angular contact ball bearing designed for demanding applications requiring exceptional accuracy and performance. Engineered with an Extra Light (A) preload and manufactured to P4A tolerance class, this bearing delivers superior running accuracy, high rigidity, and smooth operation. Its 25° contact angle is optimized to support combined loads, efficiently handling both radial and significant axial loads in one direction. The phenolic cage and universal matchable (SU) designation make it ideal for high-speed spindle arrangements and other precision machinery.
7000 ACDGA/P4A Bearing Model Code Explained, Specifications & Naming Convention
| 7000 | Basic series number, indicating a metric, light series angular contact bearing with a 10mm bore and 26mm outside diameter. |
| AC | Angular Contact design with a 25° contact angle. |
| D | Duplex arrangement. This is a single bearing intended to be universally matched (SU) with another identical bearing in a set. |
| GA | Indicates a specific preload group: Extra Light Preload (Class A). |
| P4A | The tolerance class, denoting precision grades for bore diameter, outside diameter, and width that are superior to ABEC 7 (P4) and include additional running accuracy requirements. |
7000 ACDGA/P4A Bearing Structural Features & Performance Benefits
High Precision & Rigidity: Manufactured to P4A tolerance class with an Extra Light preload, this bearing ensures minimal runout and high system stiffness, which is critical for applications like machine tool spindles.
Optimized Load Capacity: The 25° contact angle allows the bearing to support significant axial loads in addition to radial loads, making it suitable for combined load conditions.
Superior High-Speed Performance: The lightweight phenolic resin cage reduces centrifugal forces, enabling a high limiting speed of 95,000 rpm. This cage material also offers excellent performance under high acceleration and deceleration.
Universal Matching Capability (SU): As a Universal Matchable (SU) bearing, two identical 7000 ACDGA/P4A bearings can be universally paired in a back-to-back (DB) or face-to-face (DF) arrangement to support axial loads in both directions, increasing application versatility.
7000 ACDGA/P4A Bearing Typical Application Areas
The 7000 ACDGA/P4A is engineered for high-performance applications where precision, speed, and rigidity are paramount. Key industries and equipment include:
- Machine Tool Spindles: High-speed machining centers, grinding spindles.
- Precision Instrumentation: Measuring devices, optical scanners.
- High-Speed Motors and Drives: Servo motors, high-frequency spindles.
- Robotics: High-accuracy robotic arm joints and actuators.
