7013 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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7013 ACD/P4ADBB Bearing Product Overview & Core Advantages
The 7013 ACD/P4ADBB is a precision duplex angular contact ball bearing configured in a back-to-back (DB) arrangement. This high-performance bearing is engineered to simultaneously handle significant combined loads (radial and axial) from both directions. Manufactured to P4A tolerance class, it delivers exceptional running accuracy and rotational precision. The light preload (Class B) ensures high system rigidity and minimizes deflection under operational stresses, making it an ideal choice for demanding applications requiring superior positional accuracy and reliability.
7013 ACD/P4ADBB Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7013 | Basic bearing series, defining the standard boundary dimensions (65mm bore, 100mm OD, 36mm width). |
| AC | Angular Contact design with a 25° contact angle, optimized for high axial load capacity. |
| D | Duplex (two single bearings supplied as a matched set). |
| DB | Back-to-Back mounting arrangement. This configuration provides high moment rigidity and excellent stability. |
| P4A | High-Precision Tolerance Class, specifying extremely tight dimensional and running accuracy tolerances for superior performance. |
7013 ACD/P4ADBB Bearing Structural Features & Performance Benefits
- High Rigidity & Stability: The duplex back-to-back (DB) arrangement creates a wide, rigid support system that effectively resists overturning moments and shaft deflection, ensuring precise alignment under combined loads.
- Superior Load Capacity: With a 25° contact angle and a dynamic load rating of 14,332 lbf, this bearing is designed to handle high radial and bidirectional axial loads simultaneously.
- High-Speed Capability: The lightweight phenolic cage reduces centrifugal forces, enabling a high limiting speed of 31,000 rpm. The open design and factory-applied lubrication facilitate efficient heat dissipation.
- Precision Engineering: Manufactured to P4A tolerance class with tight bore and OD tolerances, this bearing guarantees minimal runout and vibration, which is critical for high-speed, high-precision spindles.
- Optimized Material: Components made from chrome steel provide high hardness, wear resistance, and long service life under demanding conditions.
7013 ACD/P4ADBB Bearing Typical Application Areas
This high-precision duplex bearing is ideally suited for applications demanding extreme accuracy, high rigidity, and high rotational speeds. Key industries and machinery include:
- Machine Tool Spindles: High-speed machining centers, grinding spindles, and milling spindles.
- Precision Rotary Systems: High-frequency motors, precision encoders, and rotary tables.
- Aerospace & Defense: Gyroscopes, radar systems, and navigation equipment.
- Medical Equipment: High-speed dental handpieces and laboratory centrifuges.
