7002 ACD/P4ADGC
7000 Series Super Precision Angular Contact Ball Bearings
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7002 ACD/P4ADGC Bearing Product Overview & Core Advantages
The 7002 ACD/P4ADGC is a precision angular contact ball bearing manufactured to P4A tolerance class for exceptional dimensional and running accuracy. Engineered with a 25° contact angle and Moderate (Class C) preload, this bearing is optimized to handle combined radial and axial loads simultaneously. Its Universal Matchable (SU) design allows for flexible mounting in duplex pairs (back-to-back or face-to-face) to achieve superior rigidity and precise rotational performance in demanding, high-speed applications such as machine tool spindles and precision instruments.
7002 ACD/P4ADGC Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning | Advantage |
|---|---|---|
| ACD | Angular Contact, 25° contact angle, Duplex bearing (Universal Matchable) | Enables optimized axial load capacity and flexible mounting in preloaded pairs for high system rigidity. |
| P4A | High-Precision Tolerance Class (superior to ABEC 7) | Ensures minimal runout and vibration for ultra-smooth, high-precision operation. |
| DGC | Moderate Preload (Class C) | Reduces axial and radial play, enhancing stiffness and rotational accuracy without excessive friction. |
7002 ACD/P4ADGC Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The angular contact design and 25° contact angle are engineered to support significant combined loads. The Universal Matchable (SU) feature allows two bearings to be mounted as a preloaded set, dramatically increasing system rigidity and moment load capacity.
- High-Speed Performance: The lightweight, durable phenolic resin cage minimizes centrifugal forces and ensures stable operation, contributing to the high limiting speed of 95,000 rpm. The open design facilitates efficient lubrication management for cooling.
- Precision Engineering: Manufactured to P4A tolerance class with tight dimensional controls on the bore diameter, outside diameter, and width, this bearing guarantees exceptional running accuracy and low noise levels.
- Durable Construction: Components made from high-grade chrome steel provide excellent wear resistance and long service life under demanding operating conditions within a temperature range of -30°C to 110°C.
7002 ACD/P4ADGC Bearing Typical Application Areas
This high-precision bearing is ideally suited for applications requiring high speed, rigidity, and accuracy, including:
- Machine Tool Spindles (High-speed machining centers, grinding spindles)
- Precision Instrumentation (Measuring devices, optical scanners)
- High-Frequency Motors and Spindle Drives
- Robotics (Articulated arm joints, rotary actuators)
- Medical Equipment (Dental handpieces, small centrifuges)
