7003 ACDGC/P4A
7000 Series Super Precision Angular Contact Ball Bearings
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7003 ACDGC/P4A Bearing Product Overview & Core Advantages
The 7003 ACDGC/P4A is a single-row angular contact ball bearing engineered for applications demanding high precision and moderate preload. Operating under the stringent P4A tolerance class, this metric bearing is designed to handle significant combined loads (radial and axial) simultaneously. Its optimized 25° contact angle provides excellent axial load capacity and high rigidity. The bearing is universally matchable (SU), allowing for flexible arrangement in sets of three to achieve specific preload and stiffness requirements, making it ideal for high-speed spindles and other precision machinery.
7003 ACDGC/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7003 | Basic bearing series designation, indicating a 17mm bore, 35mm OD, and 10mm width. |
| AC | Angular Contact design, optimized for combined loads. |
| DGC | Designates a Moderate Preload (Class C) and a Phenolic (Polyamide) cage. |
| P4A | Indicates an ultra-precision tolerance class with very tight running accuracy for bore, OD, and width. |
7003 ACDGC/P4A Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The angular contact design and 25° contact angle enable the bearing to support high radial loads and substantial one-direction axial loads simultaneously. The moderate preload (Class C) eliminates internal clearance, resulting in enhanced system stiffness and precise shaft positioning.
- High-Speed Performance: The lightweight and robust phenolic cage ensures stable operation and reduced centrifugal forces, contributing to the high limiting speed of 70,000 rpm. The open design facilitates efficient lubrication and heat dissipation.
- Precision & Accuracy: Manufactured to P4A tolerance class, this bearing guarantees minimal runout and exceptional rotational accuracy, which is critical for applications like machine tool spindles.
- Universal Matching: As a Universal Matchable (SU) bearing, it can be paired with other identical bearings in any combination to form a matched set, simplifying inventory and assembly for duplex or triplex arrangements.
7003 ACDGC/P4A Bearing Typical Application Areas
The 7003 ACDGC/P4A is ideally suited for high-performance applications where precision, speed, and rigidity are paramount. Key industries and equipment include:
- Machine Tool Spindles
- High-Frequency Motors
- Precision Grinding Spindles
- Medical and Dental Handpieces
- Robotic Drives and Servo Motors
