7005 CD/P4ADBB
7000 Series Super Precision Angular Contact Ball Bearings
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7005 CD/P4ADBB Bearing Product Overview & Core Advantages
The 7005 CD/P4ADBB is a precision duplex angular contact ball bearing designed for applications demanding exceptional rotational accuracy and rigidity. This matched set features a Back-to-Back (DB) arrangement, providing superior resistance to moment loads and offering high system rigidity. With a P4A tolerance class and light preload (Class B), it is engineered for high-speed operation and precise positioning in demanding machinery. Its compact design efficiently handles combined loads, making it an ideal choice for high-performance spindles and precision equipment.
7005 CD/P4ADBB Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning | Significance |
|---|---|---|
| 7005 | Basic bearing series and size designation | Indicates a 25mm bore, 47mm OD, 24mm width metric bearing |
| CD | Duplex bearing with Back-to-Back arrangement | Provides high rigidity and moment load capacity |
| P4A | High precision tolerance class | Ensures exceptional running accuracy and minimal vibration |
| DBB | Universal matching designation for duplex pairs | Indicates bearings are precision-matched as a set |
7005 CD/P4ADBB Bearing Structural Features & Performance Benefits
High Rigidity & Load Capacity: The duplex back-to-back configuration creates a rigid bearing system capable of withstanding heavy combined loads and significant moment loads. The 15° contact angle provides optimal balance between radial and axial load capacity.
Precision Performance: Manufactured to P4A tolerance class standards, this bearing ensures minimal runout and vibration for applications requiring high rotational accuracy. The light preload (Class B) eliminates internal clearance, enhancing system stiffness without compromising speed capability.
High-Speed Capability: The phenolic cage material offers excellent strength-to-weight ratio and smooth operation at high speeds, contributing to the bearing's impressive limiting speed of 103,000 rpm. This makes it suitable for demanding high-speed applications.
Material Excellence: Constructed from chrome steel for both rings and balls, providing superior hardness, wear resistance, and fatigue life. The bearing comes pre-lubricated for immediate operation.
7005 CD/P4ADBB Bearing Typical Application Areas
This precision duplex angular contact ball bearing is ideally suited for:
- Machine Tool Spindles: High-speed machining centers, grinding spindles, and precision lathes
- Precision Instrumentation: Measuring equipment, optical instruments, and laboratory devices
- High-Speed Motors: Spindle motors, high-frequency motors, and precision drive systems
- Robotics: Joint bearings in industrial robots requiring high accuracy and rigidity
- Medical Equipment: Dental handpieces, surgical tools, and diagnostic imaging systems
