7001 ACD/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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Product Overview and Core Advantages
The 7001 ACD/P4ADBA is a precision duplex angular contact ball bearing designed for applications requiring exceptional rotational accuracy and high rigidity. This back-to-back (DB) matched pair is preloaded to Extra light (Class A) specifications, ensuring minimal axial and radial play for superior system stability. Its primary advantage lies in its ability to handle combined loads—significant radial loads alongside substantial axial loads in both directions—making it an ideal solution for high-precision, high-speed machinery where positional accuracy is critical.
7001 ACD/P4ADBA Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7001 | Basic bearing designation indicating a 12mm bore, 28mm OD, and 16mm width. |
| A | Signifies a 25° contact angle, optimized for carrying high axial loads. |
| C | Indicates the bearing is manufactured from Chrome Steel for high durability. |
| D | Denotes a Duplex Back-to-Back (DB) arrangement. |
| P4A | Specifies a high precision tolerance class (P4A), ensuring extremely tight dimensional and running accuracy. |
| DB | Confirms the Back-to-Back mounting configuration. |
| A (in P4ADBA) | Indicates the specific preload level (Extra light / Class A) applied to the matched set. |
Structural Features and Performance Benefits
High Rigidity and Stability: The duplex back-to-back (DB) arrangement creates a wide, rigid support system that effectively resists moment loads, making it exceptionally stable under complex loading conditions.
Superior Load Capacity: With a 25° contact angle and a dynamic load rating of 1580 lbf, this bearing is engineered to handle demanding combined radial and axial loads simultaneously.
Precision High-Speed Performance: The combination of a phenolic cage, P4A tolerance class, and pre-lubrication enables smooth operation at high rotational speeds, with a limiting speed of 185,000 rpm.
Optimized for Accuracy: The Extra light preload (Class A) minimizes system deflection and ensures precise shaft positioning, which is critical for applications with stringent accuracy requirements.
7001 ACD/P4ADBA Bearing Typical Application Areas
The 7001 ACD/P4ADBA is ideally suited for high-performance applications across various industries, including:
- Machine Tool Spindles: For high-speed milling, grinding, and turning centers requiring extreme precision and rigidity.
- Precision Robotics: In robotic arm joints and actuators where accuracy and repeatability are paramount.
- High-Frequency Spindles: Used in PCB drilling and dental handpieces.
- Optical and Measuring Equipment: For rotary stages and encoders that demand minimal runout and high rotational accuracy.
