7013 CD/P4AQBCC
7000 Series Super Precision Angular Contact Ball Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
Performance
Materials
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7013 CD/P4AQBCC Bearing Product Overview & Core Advantages
The 7013 CD/P4AQBCC is a precision quadruplex angular contact ball bearing designed for applications demanding exceptional rigidity and accuracy. This metric bearing features a back-to-back (QBC) matched arrangement of four bearings, enabling it to withstand significant combined loads (radial and axial) from both directions. With a P4A tolerance class and moderate preload (Class C), it delivers high running accuracy and stable performance, making it ideal for high-precision, high-rigidity spindles and machinery.
7013 CD/P4AQBCC Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7013 | Basic bearing series, defining the standard dimensions: 65 mm bore, 100 mm OD, 72 mm width. |
| C | 15° contact angle. |
| D | Moderate preload (Class C). |
| P4A | High precision tolerance class, exceeding ABEC-7 standards. |
| QBCC | Quadruplex Back-to-Back (QBC) matched set. The final "C" confirms the specific preload and arrangement. |
7013 CD/P4AQBCC Bearing Structural Features & Performance Benefits
Exceptional Rigidity and Load Capacity: The quadruplex back-to-back (QBC) arrangement creates a highly rigid bearing system that effectively resists moment loads and complex combined loads. With a radial dynamic load rating of 24,975 lbf and a static load rating of 33,750 lbf, it is built for demanding applications.
High-Speed Capability: The lightweight phenolic cage minimizes centrifugal forces, contributing to a high limiting speed of 24,000 rpm. The optimized internal geometry and 15° contact angle further enhance high-speed stability.
Precision Performance: Manufactured to P4A tolerance class with tight dimensional controls on the bore, outside diameter, and width, this bearing ensures minimal runout and vibration for superior operational accuracy.
Optimized Material Selection: Components made from chrome steel provide high hardness and wear resistance, ensuring long service life under heavy loads and high-speed conditions.
7013 CD/P4AQBCC Bearing Typical Application Areas
The 7013 CD/P4AQBCC is engineered for high-performance machinery requiring utmost precision and stiffness. Its primary applications include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Grinding Spindles: Applications where minimal deflection and high accuracy are critical.
- High-Frequency Machining Centers: For aerospace and automotive component manufacturing.
- Industrial Pumps and Compressors: Where reliable performance under combined loads is essential.
