7005 ACE/HCP4AL1DGA
Hybrid Ceramic Super Precision Bearings
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7005 ACE/HCP4AL1DGA Bearing Product Overview & Core Advantages
The 7005 ACE/HCP4AL1DGA is a high-precision angular contact ball bearing engineered for demanding applications requiring exceptional accuracy and performance. This universally matchable (SU) bearing is designed to accommodate combined loads (radial and axial) simultaneously, with its 25° contact angle optimizing axial load capacity. Manufactured to a P4A tolerance class, it guarantees ultra-precise running accuracy and dimensional stability. Its core advantages include superior high-speed capability enabled by a phenolic cage and ceramic balls, along with high operational rigidity from its preloaded, matched set configuration.
7005 ACE/HCP4AL1DGA Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7005 | Basic bearing series, indicating a 25mm bore, 47mm OD, and 24mm width. |
| ACE | Designates a 25° contact angle and Extra Light (A) preload. |
| HC | Indicates the use of Hybrid Ceramic balls (Silicon Nitride). |
| P4A | Specifies the tolerance class, denoting very high precision for bore, OD, and width. |
| L1 | Identifies a lightweight Phenolic (L1) cage. |
| DGA | Signifies a Universal Matchable (SU) bearing, one of a pair (set of 2). |
7005 ACE/HCP4AL1DGA 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 enables a higher limiting speed (75,000 rpm). This also provides superior resistance to wear and a longer service life.
- Precision Preload & Universal Matching: The Extra Light preload (Class A) eliminates internal clearance, ensuring high system rigidity, precise rotational accuracy, and reduced noise and vibration. Being universally matchable (SU), two identical bearings can be paired in a back-to-back (DB) or face-to-face (DF) arrangement without selective mounting, simplifying installation and ensuring optimal performance.
- Phenolic Cage for High-Speed Operation: The lightweight and robust phenolic resin cage offers excellent dimensional stability at high speeds and is well-suited for the demanding conditions of high-speed applications.
- Superior Load Capacity: The 25° contact angle and precision-ground raceways provide excellent combined load capacity, handling significant radial and axial loads simultaneously.
7005 ACE/HCP4AL1DGA Bearing Typical Application Areas
This high-precision, high-speed bearing is ideally suited for advanced machinery and equipment where accuracy, speed, and reliability are paramount. Key application areas include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Robotics: Arm joints and high-accuracy rotary axes.
- High-Frequency Motors and Spindles: PCB drilling spindles and dental handpieces.
- Aerospace & Defense Systems: Gyroscopes, radar systems, and navigation equipment.
- Medical Equipment: Centrifuges and high-speed imaging scanners.
