7013 CE/P4ADT
7000 Series Super Precision Angular Contact Ball Bearings
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7013 CE/P4ADT Bearing Product Overview & Core Advantages
The 7013 CE/P4ADT represents a premium duplex tandem angular contact ball bearing designed for applications demanding exceptional precision and rigidity. This precision bearing features a P4A tolerance class and is supplied as a pre-loaded matched set (DT arrangement), enabling it to handle significant combined loads—both radial and unidirectional axial loads—with high accuracy. Its compact design and optimized internal geometry make it ideal for high-speed spindles and other high-rigidity applications where rotational precision is critical.
7013 CE/P4ADT Bearing Model Code Explained, Specifications & Naming Convention
- 7013: Basic bearing series, indicating a 65 mm bore, 100 mm OD, and 36 mm width.
- C: Denotes a 15° contact angle, optimized for high-speed operation and axial load capacity.
- E: Indicates an optimized internal design, typically featuring a larger ball complement and reinforced raceways for increased load rating.
- P4A: Specifies a very high precision tolerance class exceeding ABEC 7, ensuring minimal runout and superior rotational accuracy.
- DT (Duplex Tandem): Signifies that two bearings are universally matched and pre-loaded in a tandem arrangement to increase axial stiffness and load capacity in one direction.
7013 CE/P4ADT Bearing Structural Features & Performance Benefits
High Rigidity & Load Capacity: The duplex tandem (DT) arrangement of two pre-loaded bearings creates an exceptionally stiff assembly, capable of withstanding heavy combined loads. The 15° contact angle and reinforced E-design contribute to high axial load carrying capacity.
Superior Precision & Speed: Manufactured to P4A tolerance class, this bearing ensures minimal vibration and precise shaft positioning. The phenolic resin cage is lightweight and robust, enabling stable operation at high rotational speeds up to 31,000 rpm.
Optimized for Performance: The bearing is pre-lubricated and features an open seal type, allowing for optimal lubrication management in controlled environments. The use of chrome steel for rings and balls ensures high durability and a long operational life under demanding conditions.
7013 CE/P4ADT Bearing Typical Application Areas
The 7013 CE/P4ADT is ideally suited for high-performance machinery requiring extreme precision and rigidity, including:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Grinding Spindles: Applications demanding the highest levels of rotational accuracy.
- High-Frequency Motors and High-Speed Pumps.
- Aerospace & Defense Systems: Gyroscopes, radar systems, and other precision instruments.
