7026 ACDGA/P4A
7000 Series Super Precision Angular Contact Ball Bearings
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7026 ACDGA/P4A Bearing Product Overview & Core Advantages
The 7026 ACDGA/P4A is a single row angular contact ball bearing designed for the most demanding high-precision applications. Engineered to a P4A super-precision tolerance class, it delivers exceptional running accuracy, low noise, and low vibration. Its primary advantage lies in its ability to support combined loads (simultaneous radial and axial loads) efficiently, making it ideal for machine tool spindles and other high-speed, high-rigidity systems. The bearing is pre-lubricated and features a phenolic resin cage, contributing to its superior high-speed performance and operational stability.
7026 ACDGA/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7026 | Standard bore diameter (130 mm) and dimension series. |
| AC | Angular Contact design with a 25° contact angle. |
| DGA | Universal Matchable (SU) bearing, supplied in a set of 3 for precise matched arrangement (e.g., back-to-back or face-to-face). |
| P4A | Indicates a super-precision tolerance class with very tight dimensional and running accuracy limits. |
7026 ACDGA/P4A Bearing Structural Features & Performance Benefits
- High Rigidity and Precision: Manufactured to P4A tolerance standards, this bearing ensures minimal runout and exceptional dimensional stability, which is critical for maintaining precision in machine tool spindles.
- Superior Load Capacity: The 25° contact angle is optimized to handle significant axial loads in one direction, in addition to radial loads, making it suitable for combined load conditions.
- Optimized High-Speed Performance: The lightweight phenolic resin cage reduces centrifugal forces, lowers friction, and allows for a high limiting speed of 11,000 rpm. This cage material also offers excellent strength and guidance at high rotational speeds.
- Universal Matching Capability: The DGA (Universal Matchable) designation means bearings are supplied in sets of three, ground to universal matching standards. This allows for flexible mounting configurations (DB, DF, DT) to achieve the required system rigidity and preload.
- Pre-lubrication: The bearing comes pre-lubricated, ensuring immediate operational readiness and protection during the initial run-in period.
7026 ACDGA/P4A Bearing Typical Application Areas
The 7026 ACDGA/P4A is specifically engineered for high-performance machinery where precision, speed, and reliability are paramount. Its primary applications include:
- Machine Tool Spindles (milling, grinding, and turning centers)
- High-Frequency Motors
- Precision Grinding Spindles
- Industrial Pumps and Compressors
- Aerospace and Defense Positioning Systems
