7014 ACE/HCP4ALDT
Hybrid Ceramic Super Precision Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
Performance
Materials
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7014 ACE/HCP4ALDT Bearing Product Overview & Core Advantages
The 7014 ACE/HCP4ALDT is a duplex tandem (DT) matched pair of super-precision angular contact ball bearings. Engineered for the most demanding applications, this set delivers exceptional high-speed performance and high rigidity. The combination of a P4A tolerance class and a 25° contact angle ensures superior running accuracy and the ability to handle significant combined loads (radial and axial). Pre-lubricated and preloaded, it offers a compact, ready-to-install solution for high-reliability spindle systems.
7014 ACE/HCP4ALDT Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7014 | Basic bearing series, defining the core bearing dimensions (70mm bore, 110mm OD, 40mm width). |
| ACE | Signifies a 25° contact angle and enhanced internal geometry optimized for high-speed operation. |
| HC | Indicates the use of Hybrid Ceramic balls (Silicon Nitride), reducing friction, heat generation, and enabling higher speeds. |
| P4A | Denotes an ultra-precision tolerance class superior to ABEC 7, ensuring minimal runout and vibration. |
| DT | Specifies a Duplex Tandem arrangement. Two bearings are mounted together to primarily increase axial load capacity in one direction. |
7014 ACE/HCP4ALDT Bearing Structural Features & Performance Benefits
Hybrid Ceramic Construction: The combination of chrome steel rings and ceramic balls significantly reduces centrifugal forces, lowers operating temperature, and extends service life, especially at very high speeds.
Phenolic Resin Cage: The lightweight and robust phenolic cage offers excellent dimensional stability and low friction, contributing to the high limiting speed of 29,000 rpm.
Preload & Tandem Arrangement: Supplied as a preloaded DT matched set, this configuration provides maximum stiffness and positional accuracy, which is critical for machining precision.
Precision & Load Capacity: Manufactured to P4A tolerances, these bearings offer high running accuracy. The 25° contact angle and tandem setup provide a high dynamic load rating (8190 lbf radial) for demanding combined load conditions.
7014 ACE/HCP4ALDT Bearing Typical Application Areas
The 7014 ACE/HCP4ALDT is ideally suited for high-performance machinery requiring extreme precision and speed, including:
- CNC Machining Centers and High-Speed Spindles
- Precision Grinding Spindles
- High-frequency Milling & Drilling Heads
- Advanced Aerospace and Defense equipment
