S7013 ACD/P4AQBTC
Sealed Super Precision Angular Contact Ball Bearings
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S7013 ACD/P4AQBTC Bearing Product Overview & Core Advantages
The S7013 ACD/P4AQBTC is a precision angular contact ball bearing configured as a Quadruplex Tandem Back-to-Back (QBT) matched set. This specific arrangement is engineered to deliver exceptional system rigidity and handle significant combined loads, including heavy thrust loads in both directions. Manufactured to the exacting P4A tolerance class and featuring a moderate preload (Class C), it is designed for applications demanding high rotational accuracy, stability, and reliability in demanding operational environments.
S7013 ACD/P4AQBTC Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning | Advantage |
|---|---|---|
| ACD | Angular Contact, 25° Contact Angle | Optimized for handling combined radial and axial loads. |
| P4A | High Precision Tolerance Class | Ensures high running accuracy, reduced vibration, and superior performance. |
| QBT | Quadruplex Tandem Back-to-Back Arrangement | Provides maximum system rigidity and can accommodate heavy bidirectional thrust loads. |
| Sealed | Integrated Seals | Contaminant exclusion and grease retention for enhanced bearing life and reduced maintenance. |
S7013 ACD/P4AQBTC Bearing Structural Features & Performance Benefits
- Exceptional Rigidity and Load Capacity: The Quadruplex Tandem Back-to-Back (QBT) configuration of four bearings creates an extremely stiff bearing system, capable of withstanding high combined loads and substantial bidirectional axial loads.
- High-Speed Capability: The phenolic cage offers low weight and excellent performance at high speeds, contributing to the bearing set's limiting speed of 31,000 rpm. The 25° contact angle provides a balanced design for speed and thrust capacity.
- Precision Performance: Manufactured to P4A tolerance standards with a controlled preload, this set ensures minimal runout, precise shaft positioning, and smooth, quiet operation.
- Long Service Life & Reliability: Constructed from chrome steel for both rings and balls, the bearing offers high durability. The sealed design and factory-applied grease lubrication protect against contamination and provide reliable operation within a temperature range of -30°C to 110°C.
S7013 ACD/P4AQBTC Bearing Typical Application Areas
This high-precision, high-rigidity bearing set is ideally suited for advanced industrial machinery where utmost accuracy and stability are paramount. Key applications include:
- Machine Tool Spindles: For high-speed milling, grinding, and turning centers.
- Precision Grinding Spindles: Where extreme rotational accuracy is required.
- High-Frequency Motors and Spindles: Demanding high rigidity and speed.
- Industrial Pumps and Compressors: For handling significant axial and radial loads.
