S7013 ACE/P4AQBCA
Sealed Super Precision Angular Contact Ball Bearings
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S7013 ACE/P4AQBCA Bearing Product Overview & Core Advantages
The S7013 ACE/P4AQBCA is a super-precision angular contact ball bearing designed for the most demanding applications. As part of a quadruplex back-to-back (QBC) matched set, this bearing delivers exceptional system rigidity and stability. Its P4A tolerance class ensures ultra-high running accuracy, making it ideal for machine tool spindles and other high-speed, high-precision machinery. The combination of a phenolic cage and pre-lubrication enables superior high-speed performance while effectively handling combined radial and axial loads.
S7013 ACE/P4AQBCA Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning | Performance Benefit |
| S7013 | Super-precision angular contact bearing series | Ultra-high precision and performance |
| ACE | 25° contact angle, phenolic cage | Optimized for high-speed operation |
| P4A | Extra precision tolerance class | Exceptional running accuracy |
| QBC | Quadruplex Back-to-Back arrangement | Maximum system rigidity and moment load capacity |
S7013 ACE/P4AQBCA Bearing Structural Features & Performance Benefits
High Rigidity & Load Capacity: The quadruplex back-to-back configuration creates an extremely rigid bearing system capable of handling heavy combined loads and significant moment loads. With a 25° contact angle, the bearing efficiently manages both radial and axial forces simultaneously.
Superior High-Speed Performance: The phenolic resin cage provides excellent strength-to-weight ratio and smooth operation at high speeds, contributing to the impressive limiting speed of 31,000 rpm. This makes the bearing ideal for demanding spindle applications.
Precision Engineering: Manufactured to P4A tolerance class with tight dimensional control (bore diameter tolerance: -0.004mm to 0), this bearing ensures minimal runout and vibration for superior machining quality and surface finish.
Sealed & Pre-lubricated Design: The sealed construction with factory-applied grease provides long-term protection against contamination while maintaining optimal lubrication throughout the bearing's service life.
S7013 ACE/P4AQBCA Bearing Typical Application Areas
The S7013 ACE/P4AQBCA is specifically engineered for high-performance applications requiring extreme precision and reliability:
- Machine Tool Spindles - CNC machining centers, grinding spindles
- High-Speed Machining Centers - For aerospace and automotive components
- Precision Grinding Spindles - Internal and external grinding applications
- High-Frequency Spindles - PCB drilling and milling machines
- Medical Equipment - Dental handpieces and surgical tools
- Robotics - High-precision robotic joints and actuators
