7002 ACD/P4ADBB
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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7002 ACD/P4ADBB Bearing Product Overview & Core Advantages
The 7002 ACD/P4ADBB is a precision duplex angular contact ball bearing designed for applications requiring exceptional rotational accuracy and rigidity. This back-to-back (DB) matched set is preloaded to Light / Class B specifications, ensuring optimal performance under combined radial and axial loads. Manufactured to the stringent P4A tolerance class, it delivers superior running accuracy, making it ideal for high-speed spindles and other high-precision machinery. Its compact design and phenolic cage contribute to its outstanding high-speed capabilities.
7002 ACD/P4ADBB Bearing Model Code Explained, Specifications & Naming Convention
- 7002: Basic bearing designation (15mm bore, 32mm OD)
- A: 25° contact angle, optimized for axial load capacity
- CD: Duplex configuration in Back-to-Back (DB) arrangement
- P4A: High precision tolerance class exceeding ABEC 7 standards
- DB: Duplex Back-to-Back mounting arrangement
- B: Light preload classification for reduced deflection
7002 ACD/P4ADBB Bearing Structural Features & Performance Benefits
Enhanced Rigidity & Load Capacity: The duplex back-to-back configuration creates a rigid bearing system that effectively resists moment loads and provides exceptional stability under combined radial and axial loads.
High-Speed Performance: The phenolic resin cage offers excellent strength-to-weight ratio, reducing centrifugal forces and enabling operation at limiting speeds up to 95,000 rpm. The optimized 25° contact angle balances radial and axial load capacity while maintaining high-speed capability.
Precision Engineering: Manufactured to P4A tolerance class with tight dimensional controls on bore, outside diameter, and width, ensuring minimal runout and vibration for precision applications.
Superior Material Construction: Made from chrome steel for both rings and balls, providing high hardness, wear resistance, and long service life in demanding operating conditions.
7002 ACD/P4ADBB Bearing Typical Application Areas
The 7002 ACD/P4ADBB excels in applications requiring high precision and speed:
- Machine tool spindles for milling, grinding, and turning centers
- High-speed machining centers and precision manufacturing equipment
- Industrial pumps and compressors requiring precise shaft positioning
- Precision instruments and measuring devices
- Robotic joints and automation systems demanding high accuracy and rigidity
- Medical equipment spindles and dental handpieces
