7005 CE/P4ADBA
7000 Series Super Precision Angular Contact Ball Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
Performance
Materials
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7005 CE/P4ADBA Bearing Product Overview & Core Advantages
The 7005 CE/P4ADBA is a precision angular contact ball bearing designed for demanding applications requiring exceptional rotational accuracy and rigidity. This duplex back-to-back (DB) matched set delivers superior performance under combined loads, handling significant radial and axial forces simultaneously. Manufactured to P4A tolerance class and featuring an extra light preload (Class A), it ensures minimal runout and vibration, making it ideal for high-speed spindles and other high-precision machinery.
7005 CE/P4ADBA Bearing Model Code Explained, Specifications & Naming Convention
- 7005: Basic bearing series with 25mm bore, 47mm OD, and 12mm width
- C: 15° contact angle, optimized for axial load capacity
- E: High-capacity design with optimized internal geometry
- P4A: Super-precision tolerance class exceeding ABEC 7 standards
- DB: Duplex Back-to-Back arrangement for enhanced moment rigidity
- A: Extra light preload for minimal friction at high speeds
7005 CE/P4ADBA Bearing Structural Features & Performance Benefits
High Rigidity & Load Capacity: The duplex back-to-back configuration creates a rigid bearing system capable of withstanding combined radial and axial loads while providing excellent moment stiffness. With a dynamic load rating of 3038 lbf and static load rating of 1868 lbf, it delivers reliable performance in demanding conditions.
Precision Engineering: Manufactured to P4A tolerance class with tight dimensional controls (bore and OD tolerance: -0.004mm to 0), this bearing ensures minimal runout and vibration for superior rotational accuracy.
High-Speed Capability: The phenolic resin cage and 15° contact angle enable stable operation at limiting speeds up to 85,000 rpm. The extra light preload minimizes friction and heat generation during high-speed rotation.
Premium Materials: Constructed from chrome steel for both rings and balls, the bearing offers excellent wear resistance and durability. The optimized ball diameter of 6.35mm and 14-ball configuration provide balanced load distribution.
7005 CE/P4ADBA Bearing Typical Application Areas
The 7005 CE/P4ADBA is ideally suited for applications requiring high precision and high-speed performance:
- Machine tool spindles and high-speed machining centers
- Precision grinding machines and dental equipment
- High-frequency spindles for PCB drilling and milling
- Robotic joints and automation equipment
- Aerospace positioning systems and instrumentation
- Medical imaging devices and laboratory equipment
