7000 ACDGC/P4A
7000 Series Super Precision Angular Contact Ball Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
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7000 ACDGC/P4A Bearing Product Overview & Core Advantages
The 7000 ACDGC/P4A is a single-row angular contact ball bearing designed for high-precision applications requiring superior rotational accuracy and rigidity. Engineered to a P4A tolerance class, it delivers exceptional dimensional stability and running accuracy. Its defining characteristic is the 25° contact angle, which is optimized to support significant combined loads—handling both radial and axial loads in one direction efficiently. The bearing is universally matchable (SU), allowing two bearings to be mounted together in a back-to-back (DB), face-to-face (DF), or tandem (DT) arrangement to adjust preload and stiffness, making it an ideal, compact solution for high-speed spindles and other demanding machinery.
7000 ACDGC/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning | Significance |
|---|---|---|
| 7000 | Basic series designation | Indicates the bearing series with a 10mm bore and 26mm outside diameter. |
| AC | Angular Contact | Designed to support combined radial and axial loads. |
| DGC | Moderate Preload / Class C | Specifies the internal preload level for enhanced rigidity and reduced deflection under operational loads. |
| P4A | Tolerance Class | Denotes a high-precision bearing with extremely tight dimensional and running accuracy tolerances. |
7000 ACDGC/P4A Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The 25° contact angle and moderate preload (Class C) provide excellent resistance to deflection, enabling the bearing to handle substantial combined loads with high stability.
- Precision Performance: Manufactured to P4A tolerance class, this bearing ensures minimal runout and vibration, which is critical for applications demanding high rotational accuracy.
- High-Speed Capability: The lightweight phenolic resin cage minimizes centrifugal forces, contributing to a high limiting speed of 185,000 rpm. The open design and standard lubrication facilitate efficient heat dissipation.
- Universal Matchability (SU): As a universally matchable bearing, it can be paired with an identical bearing to create a pre-set duplex arrangement, offering design flexibility for optimizing system stiffness and load distribution.
- Material Quality: Constructed from chrome steel for both rings and balls, ensuring high durability, wear resistance, and consistent performance under the specified temperature range of -30°C to 110°C.
7000 ACDGC/P4A Bearing Typical Application Areas
- Machine Tool Spindles
- High-Speed Grinding & Milling Heads
- Precision Robotics & Automation Equipment
- Medical & Dental Handpiece Drives
- High-Frequency Spindles for PCB Drilling
