7026 CD/P4ADBB
7000 Series Super Precision Angular Contact Ball Bearings
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Main Dimensions
Ball & Washer Dimensions
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7026 CD/P4ADBB Bearing Product Overview & Core Advantages
The 7026 CD/P4ADBB is a precision duplex angular contact ball bearing configured in a back-to-back (DB) arrangement. Engineered for applications demanding exceptional rotational accuracy and rigidity, this bearing is preloaded to Light / Class B specifications, ensuring minimal axial and radial runout. Its primary advantage lies in its ability to handle combined loads—significant radial loads alongside substantial axial loads in both directions—making it ideal for high-precision, high-stiffness systems. Manufactured to the stringent P4A tolerance class, it guarantees superior running accuracy and consistent performance in demanding operational environments.
7026 CD/P4ADBB Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning | Significance & Benefit |
|---|---|---|
| C | 15° Contact Angle | Optimized for carrying combined loads, offering a balanced capacity for radial and axial forces. |
| D | Duplex Back-to-Back (DB) Arrangement | Provides high moment stiffness and excellent operational stability, ideal for preloaded systems. |
| P4A | High Precision Tolerance Class | Ensures extremely tight dimensional and running accuracy for applications requiring minimal vibration and error. |
| DB | Light Preload (Class B) | Eliminates internal clearance, enhancing rigidity and positioning accuracy without excessive friction or heat generation. |
7026 CD/P4ADBB Bearing Structural Features & Performance Benefits
- High Rigidity & Stability: The duplex back-to-back (DB) configuration creates a wide, rigid support system that effectively resists moment loads and shaft deflection, ensuring precise alignment and high rigidity under operational stresses.
- Superior Load Capacity: With a 15° contact angle and robust construction, this bearing is designed to handle combined radial and axial loads simultaneously. Its high dynamic and static load ratings (54,450 lbf and 69,750 lbf respectively) ensure long-term reliability.
- Precision & High-Speed Performance: The P4A tolerance class guarantees exceptional dimensional precision. The phenolic resin cage offers low weight and excellent performance at high speeds, contributing to a limiting speed of 11,000 rpm.
- Optimized Material Selection: Components made from chrome steel provide high hardness, wear resistance, and durability. The open design allows for customized lubrication schemes to suit specific high-speed application needs.
7026 CD/P4ADBB Bearing Typical Application Areas
The 7026 CD/P4ADBB is specified for high-performance machinery where precision, speed, and rigidity are paramount. Key industries and equipment include:
- Machine Tool Spindles: For high-speed milling, grinding, and turning centers requiring exceptional running accuracy.
- Precision Gearboxes: Especially in robotics and automation, where low backlash and high torsional stiffness are critical.
- High-Frequency Motors and Spindles: Applications demanding stable operation at very high rotational speeds.
- Medical and Laboratory Equipment: Used in centrifuges and imaging devices that require smooth, precise, and reliable rotation.
- Aerospace Actuation Systems: Where reliable performance under combined loads in compact assemblies is necessary.
