7019 ACE/HCP4ADGA
Hybrid Ceramic Super Precision Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
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Materials
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7019 ACE/HCP4ADGA Bearing Product Overview & Core Advantages
The 7019 ACE/HCP4ADGA is a precision angular contact ball bearing engineered for exceptional performance in demanding applications. This universal matchable (SU) bearing is designed to accommodate combined loads—handling significant radial loads alongside thrust loads in one direction. Manufactured to P4A tolerance class, it delivers superior running accuracy and rotational precision. Its core advantages include high-speed capability enabled by a phenolic cage and ceramic balls, high rigidity from its optimized internal geometry, and reliable operation across a wide temperature range.
Model Code Breakdown
- 7019: Basic series number, indicating a metric angular contact bearing with a 95mm bore and 145mm OD.
- ACE: Designates specific internal design features for optimized performance.
- HC: Indicates the use of Hybrid Ceramic balls (Silicon Nitride).
- P4A: Specifies the tolerance class, denoting very high precision levels for both dimension and running accuracy.
- DGA: Indicates a Universal Matchable (SU) arrangement. Two bearings are supplied as a pre-matched set for simplified installation and optimal performance.
7019 ACE/HCP4ADGA Bearing Structural Features & Performance Benefits
High Rigidity & Load Capacity: The 25° contact angle and robust construction provide high rigidity, enabling the bearing to effectively support combined radial and axial loads.
High-Speed Performance: The combination of a lightweight phenolic cage and low-friction ceramic balls significantly reduces centrifugal forces and operating temperatures, allowing for a high limiting speed of 15,000 rpm.
Precision & Longevity: Manufactured to P4A precision class with tight dimensional tolerances, this bearing ensures smooth, quiet, and vibration-free operation. The hybrid ceramic design offers enhanced durability and longer service life, especially in challenging environments.
Universal Matchability (SU): The bearings are supplied as a pre-selected pair, ensuring optimal preload and performance when mounted in a universal (face-to-face or back-to-back) arrangement.
7019 ACE/HCP4ADGA Bearing Typical Application Areas
This high-precision, high-speed bearing is ideally suited for advanced machinery and systems, including:
- Machine Tool Spindles
- High-Frequency Motors
- Aerospace & Defense Systems
- Precision Grinding Equipment
- Medical & Dental Handpieces
