7019 ACD/HCP4ADBC
Hybrid Ceramic Super Precision Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
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7019 ACD/HCP4ADBC Bearing Product Overview & Core Advantages
The 7019 ACD/HCP4ADBC is a precision angular contact ball bearing supplied as a duplex back-to-back (DB) matched set. This configuration is engineered to provide exceptional high rigidity and the ability to withstand combined loads, including significant radial loads and bidirectional axial loads. Manufactured to the stringent P4A tolerance class, it delivers superior running accuracy essential for high-performance applications. The use of ceramic balls and a phenolic cage contributes to its high-speed capabilities and reduced operational weight, making it an ideal solution for demanding, high-rotation machinery.
7019 ACD/HCP4ADBC Bearing Model Code Explained, Specifications & Naming Convention
- 7019: Basic designation indicating a metric series bearing with a 95 mm bore and 145 mm outside diameter.
- ACD: Signifies the bearing type as Angular Contact with a 25° contact angle and supplied as a Duplex set.
- HCP4A: Denotes the tolerance class P4A (higher than ABEC 7/ISO P4) and likely internal design features for high precision.
- DBC: Indicates the specific matched arrangement is Back-to-Back (DB) with a Moderate preload (Class C).
7019 ACD/HCP4ADBC Bearing Structural Features & Performance Benefits
High Rigidity and Load Capacity: The duplex back-to-back (DB) arrangement creates a rigid bearing system that effectively resists moment loads, providing exceptional stability. This design enables the bearing to handle combined radial and bidirectional axial loads simultaneously.
High-Speed Performance: The combination of lightweight ceramic balls and a phenolic resin cage minimizes centrifugal forces and ensures stable operation at the high limiting speed of 15,000 rpm. The 25° contact angle optimizes the balance between axial load capacity and speed.
Precision and Longevity: Manufactured to P4A tolerance class with tight dimensional control on the bore, outside diameter, and width, ensuring precise shaft positioning and smooth operation. The open seal type allows for optimal lubrication management in controlled environments.
7019 ACD/HCP4ADBC Bearing Typical Application Areas
This high-precision, high-speed bearing set is ideally suited for applications requiring maximum rigidity and accuracy, such as:
- Machine Tool Spindles
- High-Frequency Motors
- Precision Grinding Spindles
- Aerospace Control Systems
