7005 CE/P4ALDBA
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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Product Overview and Core Advantages
The 7005 CE/P4ALDBA is a precision angular contact ball bearing designed for applications requiring exceptional rotational accuracy and rigidity. This duplex back-to-back (DB) arrangement bearing set is preloaded to Extra Light (Class A) specifications, delivering superior running accuracy and stiffness in a compact design. Its primary advantage lies in its ability to handle combined loads—significant radial and axial loads from both directions—simultaneously, making it ideal for high-precision, high-rigidity applications where minimal deflection is critical.
7005 CE/P4ALDBA Bearing Model Code Explained, Specifications & Naming Convention
- 7005: Basic bearing designation (25mm bore, 47mm OD)
- C: 15° contact angle
- E: Optimized internal design for enhanced performance
- P4A: High precision tolerance class (equivalent to ABEC 7)
- L: Light preload
- DB: Duplex Back-to-Back arrangement
- A: Extra light preload classification
Structural Features and Performance Benefits
High Rigidity and Precision: The duplex back-to-back configuration creates a rigid bearing system that effectively resists moment loads and shaft deflection. Combined with the P4A precision tolerance and phenolic cage, this arrangement ensures exceptional running accuracy and dimensional stability.
Superior Load Capacity: With a 15° contact angle and optimized internal geometry, this bearing efficiently handles combined radial and axial loads from both directions. The radial dynamic load rating of 3038 lbf and static rating of 1868 lbf demonstrate its robust load-carrying capability.
High-Speed Performance: The phenolic resin cage provides excellent high-speed characteristics with low friction and minimal centrifugal forces, enabling operation at limiting speeds up to 85,000 rpm while maintaining stability.
Thermal Stability: The phenolic cage material and chrome steel construction maintain dimensional stability across the operating temperature range of -30°C to 110°C, ensuring consistent performance under varying thermal conditions.
7005 CE/P4ALDBA Bearing Typical Application Areas
This precision bearing set is specifically engineered for demanding applications including:
- Machine tool spindles requiring high rigidity and precision
- High-speed machining centers and precision grinding machines
- Precision instruments and measuring equipment
- Robotic systems and automation equipment
- Medical equipment spindles and precision mechanisms
- Aerospace components requiring high precision and reliability
