7013 ACB/P4A
7000 Series Super Precision Angular Contact Ball Bearings
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7013 ACB/P4A Bearing Product Overview & Core Advantages
The 7013 ACB/P4A is a single-row angular contact ball bearing engineered for applications demanding exceptional precision and rigidity. Operating under the stringent P4 (ABEC-7) tolerance class, this bearing is designed to accommodate high combined loads, primarily thrust loads in one direction, while simultaneously handling significant radial loads. Its optimized 25° contact angle and preload availability deliver superior rotational accuracy and system stiffness, making it an ideal choice for high-speed spindles and other precision machinery where minimal runout and high reliability are paramount.
7013 ACB/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Model Segment | Code | Technical Meaning |
|---|---|---|
| Basic Designation | 7013 | Indicates a metric angular contact ball bearing with a 65mm bore, 100mm OD, and 18mm width. |
| Contact Angle | ACB | Specifies a 25° contact angle, optimized for a high thrust load capacity. |
| Tolerance Class | P4A | Denotes a P4 (ABEC-7) precision grade, ensuring extremely tight dimensional and running accuracy. |
7013 ACB/P4A Bearing Structural Features & Performance Benefits
High Rigidity and Precision: The single-row design with a 25° contact angle and the option for preload provides high axial and radial stiffness, critical for minimizing deflection in precision spindles. The P4 tolerance class guarantees exceptionally low vibration and precise running geometry.
Superior Load Capacity: Engineered to handle significant combined (radial and axial) loads, with a dynamic load rating of 3285 lbf and a static load rating of 2745 lbf. The angular contact design is particularly effective at managing high one-directional thrust loads.
High-Speed Capability: The lightweight, durable phenolic resin cage minimizes centrifugal forces and friction, contributing to a high limiting speed of 26,000 rpm. The open seal type allows for efficient lubrication management in high-speed applications.
Material and Lubrication: Manufactured from high-grade chrome steel for rings and balls, ensuring durability and long service life. The bearing is supplied lubricated, ready for installation and operation.
7013 ACB/P4A Bearing Typical Application Areas
The 7013 ACB/P4A is ideally suited for high-performance applications requiring precision and speed, including:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Robotics: Arm joints and rotary actuators.
- High-Frequency Motors and Spindles: Where low friction and high rotational accuracy are critical.
- Medical and Laboratory Equipment: Centrifuges and precision scanners.
- Aerospace Actuation Systems: Control surface mechanisms and auxiliary drives.
