7026 ACDGC/HCP4A
Hybrid Ceramic Super Precision Bearings
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7026 ACDGC/HCP4A Bearing Product Overview & Core Advantages
The 7026 ACDGC/HCP4A is a high-precision angular contact ball bearing engineered for demanding applications requiring exceptional accuracy and performance. This single bearing features a 25° contact angle and is manufactured to P4A tolerance class for superior running accuracy. Its core advantages include the ability to accommodate combined radial and axial loads, high-speed capability facilitated by a phenolic cage and ceramic balls, and universal matchability (SU), allowing for flexible mounting arrangements in sets. Preloaded to Moderate / Class C, it delivers high system rigidity and precise rotational performance right from installation.
Model Code Breakdown
| Code Segment | Technical Meaning |
|---|---|
| 7026 | Basic bearing designation indicating a 130 mm bore, 200 mm OD, and 33 mm width. |
| AC | Angular Contact design. |
| DGC | Designates a Moderate / Class C preload and Universal Matchable (SU) configuration. |
| HC | Indicates the use of Hybrid Ceramic components (Ceramic balls with steel rings). |
| P4A | Specifies the tolerance class, denoting very high precision for bore, outer diameter, and width. |
7026 ACDGC/HCP4A Bearing Structural Features & Performance Benefits
Hybrid Ceramic Construction: The combination of chrome steel rings and ceramic balls significantly reduces friction, lowers operating temperature, and extends service life, especially in high-speed applications. This construction also offers benefits in electrically sensitive environments.
High-Speed & Rigidity: The phenolic cage is lightweight and robust, contributing to the high limiting speed of 11,000 rpm. The 25° contact angle and preload provide high axial rigidity and precise shaft positioning, minimizing deflection under load.
Precision & Load Capacity: Manufactured to P4A tolerance class, this bearing ensures smooth, quiet, and vibration-free operation. With a dynamic load rating of 31,500 lbf and a static load rating of 33,750 lbf, it is capable of handling significant combined loads.
Universal Matching: As a Universal Matchable (SU) bearing, it can be mounted in tandem, back-to-back, or face-to-face arrangements with other SU bearings to create a matched set, simplifying design and assembly for complex load cases.
7026 ACDGC/HCP4A Bearing Typical Application Areas
The 7026 ACDGC/HCP4A is ideally suited for high-performance machinery where precision, speed, and rigidity are paramount. Key application areas include:
- Machine Tool Spindles: For high-speed milling, grinding, and turning centers.
- Precision Grinding Spindles: Demanding extreme running accuracy and minimal thermal growth.
- High-Frequency Motors and Spindles: Benefiting from the hybrid ceramic's high-speed and electrical characteristics.
- Aerospace & Defense Systems: Including gyroscopes, radar systems, and other precision instrumentation.
- Medical Equipment: Such as high-speed dental handpieces and imaging device rotors.
