7226 CD/P4ADBC
7200 & 7300 Series Super Precision Angular Contact Ball Bearings
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7226 CD/P4ADBC Bearing Product Overview & Core Advantages
The 7226 CD/P4ADBC is a precision duplex pair of Angular Contact Ball Bearings in a Back-to-Back (DB) arrangement, pre-loaded for immediate use. This configuration is engineered to provide exceptional high rigidity and superior capability for handling combined loads, including significant radial loads and bidirectional axial loads. Manufactured to the exacting P4A tolerance class, it is designed for applications demanding the highest levels of rotational accuracy and operational reliability in demanding industrial environments.
7226 CD/P4ADBC Bearing Model Code Explained, Specifications & Naming Convention
- 7226: Basic designation for a 130 mm bore, 230 mm OD angular contact ball bearing.
- C: Denotes a 15° contact angle, optimized for high axial load capacity.
- D: Indicates a duplex pair (two bearings supplied as a set).
- P4A: Specifies a super-precision tolerance class, exceeding ABEC 7/ISO P4 standards, ensuring minimal runout and vibration.
- DB: Defines the Back-to-Back arrangement. This configuration provides high moment rigidity and stable operation under complex loading conditions.
- C: Specifies a Moderate preload (Class C), which increases bearing stiffness and optimizes performance for high-speed operation.
7226 CD/P4ADBC Bearing Structural Features & Performance Benefits
High Rigidity & Load Capacity: The duplex back-to-back (DB) arrangement creates a wide, rigid support system, significantly increasing the bearing's resistance to moment loads and its ability to sustain heavy combined radial and axial loads from both directions.
Precision & High-Speed Performance: Built to P4A super-precision standards with a phenolic resin cage, this bearing ensures smooth, quiet, and stable operation at high rotational speeds, with a limiting speed of 11,000 rpm. The phenolic cage offers excellent strength-to-weight ratio and is suitable for high-speed applications.
Optimized Internal Geometry: Featuring 17 precision-ground chrome steel balls and a 15° contact angle, this design provides an optimal balance between axial and radial load capacity.
Ready-to-Install Solution: The bearings are supplied as a pre-loaded and lubricated matched set, simplifying installation and ensuring immediate, optimal performance.
7226 CD/P4ADBC Bearing Typical Application Areas
This high-precision, high-rigidity bearing pair is ideally suited for critical applications where accuracy and stability are paramount, including:
- Machine Tool Spindles (e.g., milling, grinding, and turning centers)
- High-Frequency Spindle Motors
- Precision Gearboxes and Drive Systems
- Industrial Pumps and Compressors
- Medical and Aerospace Rotary Equipment
