7019 ACD/P4ADGA
7000 Series Super Precision Angular Contact Ball Bearings
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7019 ACD/P4ADGA Bearing Product Overview & Core Advantages
The 7019 ACD/P4ADGA is a precision angular contact ball bearing designed for applications demanding exceptional accuracy and reliability. Engineered to the exacting P4A tolerance class, this bearing excels in handling combined loads, supporting significant radial loads and axial loads in one direction. Its Universal Matchable (SU) design allows for flexible mounting in pairs to accommodate bidirectional axial loads. The combination of a phenolic cage, high-grade chrome steel construction, and pre-lubrication ensures superior high-speed performance and operational stability, making it ideal for high-precision, high-rigidity applications.
7019 ACD/P4ADGA Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning |
|---|---|
| AC | Angular Contact design with a 25° contact angle. |
| D | Indicates a high ball count and optimized internal geometry for increased load capacity. |
| P4A | Denotes a high-precision tolerance class with enhanced running accuracy for spindle applications. |
| DGA | Specifies an Extra light preload (Class A) and the Universal Matchable (SU) arrangement capability. |
7019 ACD/P4ADGA Bearing Structural Features & Performance Benefits
- High Rigidity and Load Capacity: The angular contact design and high ball complement (21 balls of 15.875 mm diameter) provide excellent stiffness and high dynamic and static load ratings (28,125 lbf / 34,425 lbf), enabling reliable performance under demanding combined loads.
- Optimized High-Speed Performance: The lightweight phenolic cage minimizes centrifugal forces, contributing to a high limiting speed of 15,000 rpm. The standard pre-lubrication ensures immediate and smooth operation.
- Precision Engineering: Manufactured to P4A tolerance standards with tight dimensional controls on the bore diameter (95 mm), outside diameter (145 mm), and width (48 mm), guaranteeing consistent, high-precision performance.
- Universal Matching Design: As a Universal Matchable (SU) bearing, it can be mounted in pairs (back-to-back, face-to-face, or tandem) without the need for selective assembly, simplifying installation and providing versatile load support configurations.
7019 ACD/P4ADGA Bearing Typical Application Areas
The 7019 ACD/P4ADGA is ideally suited for high-performance machinery requiring precision and speed, including:
- Machine Tool Spindles
- High-Frequency Motors
- Precision Grinding Equipment
- Aerospace Control Systems
- Medical and Laboratory Instrumentation
