7015 ACD/P4ADBA
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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7015 ACD/P4ADBA Bearing Product Overview & Core Advantages
The 7015 ACD/P4ADBA is a duplex back-to-back angular contact ball bearing designed for high-precision applications requiring exceptional rigidity and accuracy. This P4A tolerance class bearing features an extra light preload (Class A) and is specifically engineered to handle combined radial and axial loads simultaneously. Its duplex back-to-back (DB) arrangement provides superior moment stiffness and rotational accuracy, making it ideal for machine tool spindles and other precision machinery where high rigidity and minimal deflection are critical.
7015 ACD/P4ADBA Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning | Performance Benefit |
|---|---|---|
| 7015 | Basic bearing size: 75mm bore × 115mm OD × 40mm width | Standard metric dimensions for compatibility |
| AC | Angular Contact design | Optimized for combined loading conditions |
| D | Duplex arrangement | Enhanced rigidity and load capacity |
| P4A | High precision tolerance class | Superior running accuracy and minimal vibration |
| DB | Back-to-Back mounting | Increased moment load capacity and stiffness |
Structural Features & Performance Advantages
High Rigidity Design: The duplex back-to-back arrangement creates a wide effective spread between bearing rows, significantly increasing moment stiffness and resistance to tilting moments. This configuration provides superior stability under complex loading conditions.
Enhanced Load Capacity: With a 25° contact angle and double row configuration, this bearing delivers excellent combined load performance. The radial dynamic load rating of 18,135 lbf and static load rating of 20,925 lbf ensure reliable operation under demanding conditions.
Precision Engineering: Manufactured to P4A tolerance class with tight dimensional controls (bore and OD tolerance: -0.004mm to 0), this bearing guarantees high running accuracy and minimal vibration. The phenolic cage provides excellent strength-to-weight ratio and smooth operation at high speeds.
Optimized Performance: The extra light preload (Class A) ensures minimal friction while maintaining precise shaft positioning. With 20 precision balls of 12.7mm diameter and chrome steel construction, this bearing offers consistent performance across its operating temperature range of -30°C to 110°C.
7015 ACD/P4ADBA Bearing Typical Application Areas
Machine Tool Spindles: High-speed machining centers, grinding spindles, and milling machines requiring precise rotational accuracy and high rigidity.
Precision Equipment: Coordinate measuring machines, optical instruments, and semiconductor manufacturing equipment where minimal runout and stable positioning are essential.
Industrial Machinery: High-precision gearboxes, rotary tables, and positioning systems that demand combined load capacity and excellent stiffness.
Robotics and Automation: Robot arm joints, rotary actuators, and precision motion control systems requiring high moment stiffness and reliable performance.
