71830 ACDGC/P4
71800 Series Super Precision Angular Contact Ball Bearings
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71830 ACDGC/P4 Bearing Product Overview & Core Advantages
The 71830 ACDGC/P4 is a precision angular contact ball bearing designed for demanding applications requiring exceptional rotational accuracy and rigidity. As a single bearing that is Universal Matchable (SU), it enables simplified assembly into precisely preloaded pairs or sets, delivering superior performance in compact installations. Its P4 tolerance class ensures extremely tight dimensional and running accuracy, making it ideal for high-speed spindles and other precision machinery. The bearing is pre-lubricated and features a moderate preload (Class C), providing immediate operational readiness and stable running characteristics from startup.
71830 ACDGC/P4 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71830 | Basic bearing designation indicating the size series and bore diameter of 150 mm. |
| AC | Angular Contact design, optimized for combined loads. |
| DGC | Designates a Universal Matchable (SU) bearing with a 25° contact angle and Moderate Preload (Class C). |
| P4 | Indicates a high-precision tolerance class with extremely tight limits on bore, outside diameter, and width tolerances. |
71830 ACDGC/P4 Bearing Structural Features & Performance Benefits
High Rigidity and Load Capacity: The 25° contact angle and robust construction are engineered to support significant combined radial and axial loads simultaneously. The moderate preload eliminates internal clearance, resulting in enhanced system stiffness and precise shaft positioning.
High-Speed Performance: The lightweight phenolic cage minimizes centrifugal forces, reduces friction, and contributes to the high limiting speed of 11,000 rpm. This makes the bearing suitable for high-speed applications.
Precision Engineering: Manufactured to P4 tolerance standards, this bearing guarantees minimal runout and vibration, which is critical for achieving high levels of machining accuracy and surface finish.
Universal Matching Design: As an SU designation bearing, any two 71830 ACDGC/P4 bearings can be universally matched in a back-to-back, face-to-face, or tandem arrangement to meet specific application requirements for preload and rigidity without selective mounting.
71830 ACDGC/P4 Bearing Typical Application Areas
- Machine Tool Spindles: High-speed milling, grinding, and turning centers requiring high precision and rigidity.
- Precision Robotics: Arm joints and rotary units where accuracy and repeatability are paramount.
- High-Frequency Motors and Spindles: Applications demanding smooth operation at extreme rotational speeds.
- Medical and Laboratory Equipment: Centrifuges and imaging devices that require reliable, low-vibration performance.
