7019 ACDGC/P4A
7000 Series Super Precision Angular Contact Ball Bearings
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7019 ACDGC/P4A Bearing Product Overview & Core Advantages
The 7019 ACDGC/P4A is a single row angular contact ball bearing engineered for applications demanding high precision and superior running accuracy. Positioned in the P4A tolerance class, it offers extremely tight dimensional tolerances for exceptional performance. Its key advantage lies in its ability to carry combined loads (radial and axial loads simultaneously) efficiently, thanks to its 25° contact angle. The Universal Matchable (SU) designation allows for flexible mounting in preloaded sets to achieve the required high rigidity and operational stability. This bearing is pre-lubricated and features an open design, making it ideal for high-speed spindle applications where precision is paramount.
7019 ACDGC/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7019 | Basic bearing designation indicating a metric series bearing with a 95 mm bore, 145 mm OD, and 24 mm width. |
| AC | Angular Contact design, optimized for combined loads. |
| DGC | Internal design suffix. Typically indicates a specific contact angle and internal geometry for high-precision applications. |
| P4A | The tolerance class, denoting very high precision with tight limits on bore, outside diameter, and width tolerances. |
7019 ACDGC/P4A Bearing Structural Features & Performance Benefits
- High Precision & Rigidity: Manufactured to P4A tolerance class with a Moderate (Class C) preload, this bearing provides exceptional dimensional stability and high rigidity, minimizing deflection under load for superior machining accuracy.
- Optimized Load Capacity: The 25° contact angle is engineered to handle significant combined loads, making it suitable for applications with substantial axial and radial force components.
- High-Speed Capability: The lightweight and robust phenolic cage ensures stable operation at high rotational speeds, contributing to a high limiting speed of 15,000 rpm. The open design facilitates efficient lubrication management in high-speed systems.
- Universal Matching (SU): This feature allows multiple bearings to be universally matched in sets (typically 3 bearings in a set) without selective assembly, simplifying installation and ensuring consistent, pre-determined preload and performance.
7019 ACDGC/P4A Bearing Typical Application Areas
- Machine Tool Spindles: High-speed milling, grinding, and turning centers where precision bearings are critical for surface finish and dimensional accuracy.
- Precision Spindles: Used in PCB drilling, semiconductor manufacturing, and other high-precision machining equipment.
- High-Frequency Motors: Applications requiring smooth operation at very high rotational speeds.
- Robotic Drives: Joints and actuators demanding high rigidity and precise motion control.
