7013 ACBGA/P4A
7000 Series Super Precision Angular Contact Ball Bearings
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7013 ACBGA/P4A Bearing Product Overview & Core Advantages
The 7013 ACBGA/P4A is a single-row angular contact ball bearing designed for applications demanding high precision and exceptional running accuracy. Positioned in the P4A tolerance class, it delivers superior dimensional and rotational precision. Its 25° contact angle is optimized to handle significant combined loads, efficiently supporting both radial and axial loads in one direction. The bearing features an Extra light (Class A) preload for reduced noise and vibration, making it ideal for high-speed operation up to 31,000 rpm. Manufactured from chrome steel and featuring a phenolic cage, it offers reliable performance in a compact bearing size of 65 mm x 100 mm x 18 mm.
7013 ACBGA/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning | Significance & Advantage |
|---|---|---|
| AC | Angular Contact | Designates the bearing type, capable of supporting combined radial and axial loads. |
| BGA | Preload Class A (Extra Light) | Indicates a light internal preload for high rotational accuracy and low running torque. |
| P4A | Tolerance Class P4A | Specifies very high precision tolerances for bore, outside diameter, and width, ensuring exceptional running performance. |
| Open | No Seal / Shield | Allows for higher limiting speeds and is intended for systems where external sealing is provided. |
7013 ACBGA/P4A Bearing Structural Features & Performance Benefits
- High Precision & Rigidity: The P4A tolerance class and Class A preload ensure minimal runout and high system rigidity, which is critical for applications requiring precise shaft positioning.
- Superior Load Capacity: The 25° contact angle and optimized internal geometry provide excellent combined load capacity, handling both radial and one-direction axial loads effectively.
- Optimized High-Speed Performance: The lightweight phenolic cage reduces centrifugal forces, contributing to the high limiting speed of 31,000 rpm. The open design further facilitates heat dissipation at high speeds.
- Universal Matching (SU): This bearing is universally matchable, allowing two bearings to be paired in a back-to-back (DB) or face-to-face (DF) arrangement without selective assembly, simplifying mounting and ensuring optimal preload and stiffness in duplex sets.
7013 ACBGA/P4A Bearing Typical Application Areas
The 7013 ACBGA/P4A is engineered for high-performance machinery where precision and speed are paramount. Key application areas include:
- Machine Tool Spindles: For high-speed milling, grinding, and turning centers.
- Precision Grinding Spindles: Where extreme rotational accuracy is required.
- High-Frequency Motors and Spindles: Used in PCB drilling and semiconductor manufacturing equipment.
- Medical and Dental Equipment: Such as high-speed handpieces and centrifuges.
- Aerospace Control Systems: Actuators and guidance systems requiring reliable, high-precision bearings.
