S7005 CD/P4ADBA
Sealed Super Precision Angular Contact Ball Bearings
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S7005 CD/P4ADBA Bearing Product Overview & Core Advantages
The S7005 CD/P4ADBA is a precision duplex pair of double row angular contact ball bearings, pre-configured in a back-to-back (DB) arrangement. Engineered to the exacting P4A tolerance class, this matched set delivers exceptional rotational accuracy and stability. Its core advantage lies in its ability to simultaneously support high combined loads—significant radial loads and bidirectional axial loads—making it an ideal solution for applications demanding high rigidity and precise shaft positioning. The sealed design with phenolic cage ensures reliable performance in demanding operational environments.
Model Code Breakdown
| Code Segment | Technical Meaning |
|---|---|
| S7005 | Basic bearing designation (25mm bore, 47mm OD). |
| C | 15° contact angle, optimized for supporting combined loads. |
| D | Indicates the bearing is part of a duplex pair. |
| P4A | High precision tolerance class, exceeding ABEC 7/ISO P4 standards for superior running accuracy. |
| DB | Back-to-Back arrangement. This configuration provides high moment rigidity and excellent stability under complex loads. |
| A | Extra light preload. Ensures minimal deflection and precise operation under light loads, ideal for high-speed applications. |
S7005 CD/P4ADBA Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The duplex back-to-back (DB) arrangement of two bearings creates a wide, stable support system. This structure significantly increases the assembly's resistance to moment loads and tilting, providing high rigidity to handle demanding combined radial and axial loads.
- Precision Performance: Manufactured to P4A tolerance class with a 15° contact angle, this bearing set guarantees exceptional running accuracy, low vibration, and consistent performance in precision machinery.
- Optimized for High-Speed Operation: The lightweight phenolic resin cage reduces centrifugal forces, while the extra light preload (Class A) minimizes friction and heat generation. These features collectively support the high limiting speed of 83,000 rpm.
- Sealed & Lubricated for Life: The sealed design effectively protects against contamination. Pre-lubricated with grease, the bearing is ready for installation and offers long-term, maintenance-free operation within its specified temperature range.
S7005 CD/P4ADBA Bearing Typical Application Areas
This high-precision, high-rigidity bearing set is ideally suited for applications where accuracy and stability are paramount. Key industries and equipment include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Gearboxes and Robotic Drives.
- High-Frequency Motors and Spindle Drives.
- Medical Equipment: Dental handpieces and imaging device rotors.
- Aerospace Actuators and Instrumentation.
