7013 ACEGB/P4A
7000 Series Super Precision Angular Contact Ball Bearings
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Main Dimensions
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7013 ACEGB/P4A Bearing Product Overview & Core Advantages
The 7013 ACEGB/P4A is a single row angular contact ball bearing engineered for high-precision applications demanding exceptional rotational accuracy and rigidity. Operating under a P4A tolerance class, this bearing is designed to accommodate high combined loads, primarily thrust loads in one direction, making it ideal for high-speed spindles and precision machinery. Its universal matchable (SU) design allows for flexible mounting in pairs to handle bidirectional axial loads. Pre-loaded to Light / Class B, it ensures minimal deflection and superior running accuracy right from installation.
7013 ACEGB/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7013 | Basic bearing series, defining the standard dimensions: 65mm bore, 100mm OD, 18mm width. |
| AC | Angular Contact design with a 25° contact angle, optimized for high axial load capacity. |
| E | Optimized internal design, typically featuring a larger ball complement and reinforced raceways for increased load rating. |
| GB | Signifies a Light / Class B preload. This pre-set internal clearance ensures high rigidity and precise shaft positioning. |
| P4A | Indicates an ultra-precision tolerance class with very tight limits on bore, OD, and width tolerances for superior running accuracy. |
7013 ACEGB/P4A Bearing Structural Features & Performance Benefits
High-Precision Construction: Manufactured to P4A dimensional and running accuracy standards, this bearing guarantees minimal vibration and exceptional positional accuracy for demanding applications.
Superior Load Capacity: The 25° contact angle and optimized "E" type internal geometry, featuring 8.731mm balls and a total of 25 balls, provide a high dynamic load rating of 4388 lbf and static load rating of 3285 lbf, enabling reliable performance under significant combined radial and axial loads.
High-Speed Capability: The lightweight phenolic resin cage ensures excellent stability and low friction, contributing to a high limiting speed of 31,000 rpm. This makes the bearing suitable for high-speed machining and other rapid rotation applications.
Rigidity and Stability: The application of a Light preload (Class B) eliminates internal clearance, resulting in increased system stiffness, reduced noise, and improved guidance of the shaft.
Universal Matching: As a Universal Matchable (SU) bearing, two identical 7013 ACEGB/P4A bearings can be mounted in various arrangements (back-to-back, face-to-face, or tandem) to create a high-rigidity bearing set capable of handling complex load conditions.
7013 ACEGB/P4A Bearing Typical Application Areas
- Machine Tool Spindles: High-speed milling, grinding, and turning centers requiring high precision and rigidity.
- Precision Rotary Tables: Indexing and positioning systems in CNC machining and measuring equipment.
- High-Frequency Motors and Spindles: Applications demanding smooth operation at very high rotational speeds.
- Medical and Laboratory Equipment: Centrifuges and other precision instruments where accuracy and reliability are critical.
- Robotics and Automation: High-accuracy joints and drive systems.
