7201 ACDGB/P4A
7200 & 7300 Series Super Precision Angular Contact Ball Bearings
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7201 ACDGB/P4A Bearing Product Overview & Core Advantages
The 7201 ACDGB/P4A is a single row angular contact ball bearing designed for high-precision applications requiring exceptional rotational accuracy and high-speed capability. Manufactured to the stringent P4A tolerance class, this bearing delivers superior running accuracy and dimensional stability. Its key advantage lies in its ability to support combined loads (simultaneous radial and axial loads) efficiently, making it ideal for demanding applications where high rigidity and precise shaft guidance are critical. The Universal Matchable (SU) designation allows for flexible mounting arrangements in sets to accommodate complex load conditions.
7201 ACDGB/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning | Significance |
|---|---|---|
| 7201 | Basic bearing series and size designation | Indicates a metric, light series angular contact bearing with a 12mm bore. |
| AC | Angular Contact | Optimized geometry for handling combined loads. |
| DGB | Contact Angle & Preload | Signifies a 25° contact angle and a Light preload (Class B) for enhanced rigidity and reduced deflection. |
| P4A | Tolerance Class | Denotes a super-precision tolerance grade, ensuring extremely tight dimensional and running accuracy for high-performance applications. |
7201 ACDGB/P4A Bearing Structural Features & Performance Benefits
High Rigidity and Precision: The 25° contact angle and light preload work in concert to provide high system rigidity, minimizing shaft deflection under load and ensuring precise rotational performance. This is critical for maintaining accuracy in high-speed spindles.
Superior Load Capacity: Engineered to handle significant combined loads, the bearing's optimized internal geometry efficiently manages both radial and axial forces, contributing to long service life.
Optimized High-Speed Performance: The lightweight phenolic resin cage reduces centrifugal forces, while the precision-ground chrome steel components ensure smooth operation, enabling a high limiting speed of 95,000 rpm.
Universal Matching Capability: As a Universal Matchable (SU) bearing, it can be mounted in sets (back-to-back, face-to-face, or tandem) to create a matched arrangement that increases load capacity and moment stiffness.
7201 ACDGB/P4A Bearing Typical Application Areas
The 7201 ACDGB/P4A is ideally suited for high-performance machinery requiring supreme accuracy and speed. Key application areas include:
- Machine Tool Spindles: High-speed machining centers, grinding spindles.
- Precision Instruments: Measuring devices, optical scanners.
- High-Speed Drives: Electric motor spindles, turbochargers.
- Robotics: High-accuracy joint and arm actuators.
