7015 ACD/P4AQBCD
7000 Series Super Precision Angular Contact Ball Bearings
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7015 ACD/P4AQBCD Bearing Product Overview & Core Advantages
The 7015 ACD/P4AQBCD is a precision quadruplex angular contact ball bearing designed for applications requiring exceptional stiffness and the ability to handle complex combined loads. This matched set of four bearings, arranged in a Back-to-Back (QBC) configuration, provides superior moment rigidity and stability. Manufactured to a P4A tolerance class and featuring a Heavy preload (Class D), it is engineered for high-precision, high-reliability machinery where minimal deflection under load is critical.
7015 ACD/P4AQBCD Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7015 | Standard bearing series designation indicating bore diameter of 75 mm and outside diameter of 115 mm. |
| ACD | Angular Contact Design with a 25° contact angle for optimal axial load capacity. |
| P4A | Indicates a high-precision tolerance class (superior to ABEC 7), ensuring minimal runout and vibration for demanding applications. |
| QBC | Denotes a Quadruplex Back-to-Back matched set. This arrangement significantly increases system rigidity and resistance to moment loads. |
| D | Specifies a Heavy preload (Class D), which maximizes bearing stiffness and positional accuracy at the expense of some speed capability. |
7015 ACD/P4AQBCD Bearing Structural Features & Performance Benefits
High Rigidity & Load Capacity: The quadruplex back-to-back arrangement creates a highly rigid bearing system capable of withstanding heavy combined radial and axial loads as well as significant moment forces. The heavy preload eliminates internal clearance, ensuring precise shaft positioning and minimal deflection under operational stresses.
Precision Engineering: Built to P4A tolerance standards, this bearing guarantees exceptional running accuracy. The phenolic cage offers excellent strength-to-weight ratio and smooth operation at high speeds, contributing to the bearing's limiting speed of 28,000 rpm.
Durability & Performance: Constructed from chrome steel for both rings and balls, the bearing provides high fatigue life and wear resistance. The 25° contact angle is optimized to handle substantial axial loads in both directions, making it ideal for complex loading scenarios.
7015 ACD/P4AQBCD Bearing Typical Application Areas
- High-Precision Machine Tool Spindles for milling, grinding, and turning centers
- High-Speed & High-Rigidity Spindles in PCB drilling and precision machining
- Industrial Robotics where high moment stiffness is required in robotic arm joints
- Aerospace Actuation Systems and precision gearboxes
- Medical Equipment such as high-speed dental handpieces and imaging scanner gantries
