S7007 ACD/P4A
Sealed Super Precision Angular Contact Ball Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
Performance
Materials
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S7007 ACD/P4A Bearing Product Overview & Core Advantages
The S7007 ACD/P4A is a precision angular contact ball bearing designed for applications demanding exceptional rotational accuracy and rigidity. As a single-row bearing, it is optimized to support high combined loads, accommodating significant axial loads in one direction alongside radial loads. Its P4 (ABEC-7) tolerance class ensures ultra-precise running, making it ideal for high-speed spindles and other high-precision machinery. The bearing comes pre-lubricated and is available with a preload, contributing to its high stiffness and immediate operational readiness.
S7007 ACD/P4A Bearing Model Code Explained, Specifications & Naming Convention
| S7007 | Basic series designation for a high-precision angular contact ball bearing. |
| AC | Indicates a 25° contact angle, optimized for supporting high axial loads. |
| D | Signifies that the bearing is supplied with a preload for enhanced rigidity and precise shaft positioning. |
| P4A | Denotes a high-precision tolerance class equivalent to ABEC-7, ensuring minimal runout and vibration. |
S7007 ACD/P4A Bearing Structural Features & Performance Benefits
High Rigidity and Precision: The combination of a 25° contact angle and an applied preload (D) provides high system rigidity, minimizing deflection under load and ensuring exceptional running accuracy. This is critical for applications requiring precise tool or workpiece positioning.
Superior Load Capacity: Engineered to handle high combined loads, this bearing efficiently manages substantial axial loads in one direction and radial loads simultaneously. With a dynamic load rating of 3330 lbf and a static load rating of 2025 lbf, it offers reliable performance in demanding conditions.
Optimized High-Speed Performance: The lightweight phenolic resin cage reduces centrifugal forces, enabling a high limiting speed of 20,000 rpm. The standard lubrication and precision-ground components further contribute to smooth, low-vibration operation at high rotational velocities.
Material and Construction: Manufactured from high-grade chrome steel for both rings and balls, the bearing ensures durability and a long service life. The sealed design protects the internal components from contamination.
S7007 ACD/P4A Bearing Typical Application Areas
The S7007 ACD/P4A is ideally suited for high-performance applications where precision and speed are paramount. Key industries and equipment include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Robotics: Arm joints and high-accuracy rotary axes.
- High-Frequency Spindles: PCB drilling and engraving machinery.
- Medical Equipment: Dental handpieces and laboratory centrifuges.
- Aerospace Instrumentation: Gyroscopes and navigation systems.
