7001 ACD/P4ADFD
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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7001 ACD/P4ADFD Bearing Product Overview & Core Advantages
The 7001 ACD/P4ADFD is a duplex face-to-face (DF) matched pair of angular contact ball bearings, designed for applications demanding high rigidity and precision. This P4A tolerance class bearing is preloaded for heavy preload (Class D), ensuring exceptional running accuracy and minimal axial/radial deflection under combined loads. Its compact design, featuring a 12 mm bore and 28 mm outside diameter, makes it ideal for high-precision spindles and other precision machinery where space is constrained and performance is critical.
7001 ACD/P4ADFD Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
| 7001 | Basic bearing series with 12mm bore, 28mm OD |
| AC | Angular Contact design with 25° contact angle |
| D | Heavy preload (Class D) for maximum rigidity |
| P4A | High precision tolerance class (superior to ABEC 7) |
| DF | Duplex Face-to-Face mounting arrangement |
7001 ACD/P4ADFD Bearing Structural Features & Performance Benefits
High Rigidity & Precision: The duplex face-to-face DF arrangement with heavy preload provides exceptional stiffness, minimizing deflection under combined radial and axial loads. The P4A tolerance class ensures precise running accuracy for demanding applications.
Optimized Load Capacity: With a 25° contact angle and phenolic cage, this bearing efficiently handles both radial and axial loads. The radial dynamic load rating of 1580 lbf and static load rating of 821 lbf provide reliable performance in heavy-duty conditions.
High-Speed Capability: The phenolic cage material and optimized internal geometry enable operation at limiting speeds up to 110,000 rpm, making it suitable for high-speed spindle applications.
Premium Material Construction: Manufactured from chrome steel for both rings and balls, this bearing offers excellent wear resistance and durability. The open design allows for custom lubrication schemes to match specific application requirements.
7001 ACD/P4ADFD Bearing Typical Application Areas
- Machine tool spindles and high-precision machining centers
- High-speed grinding spindles and milling applications
- Precision instruments and measuring equipment
- Robotic joints and automation systems
- Medical equipment spindles and dental handpieces
- Aerospace control systems and guidance mechanisms
