7215 ACD/P4AQBCC
7200 & 7300 Series Super Precision Angular Contact Ball Bearings
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7215 ACD/P4AQBCC Bearing Product Overview & Core Advantages
The 7215 ACD/P4AQBCC is a precision quadruplex angular contact ball bearing engineered for demanding applications requiring exceptional rigidity and load capacity. This high-rigidity matched set configuration combines four bearings in a back-to-back arrangement (QBC), delivering superior stability under combined loads including radial and axial forces. Manufactured to P4A tolerance class, it ensures ultra-precise rotational accuracy and is pre-lubricated for immediate operation. Its compact design and moderate preload (Class C) make it ideal for high-precision machinery where uncompromising performance is critical.
7215 ACD/P4AQBCC Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7215 | Standard bearing series designation (75mm bore, 130mm OD, 100mm width) |
| ACD | Angular Contact Design with 25° contact angle |
| P4A | High precision tolerance class (superior to ABEC 7) |
| QBCC | Quadruplex Back-to-Back arrangement with Class C preload |
7215 ACD/P4AQBCC Bearing Structural Features & Performance Benefits
Exceptional Rigidity & Load Capacity: The quadruplex back-to-back configuration creates an extremely rigid bearing system capable of handling heavy combined radial and axial loads while maintaining precise shaft positioning. With a radial dynamic load rating of 40,950 lbf and static load rating of 53,100 lbf, this bearing delivers reliable performance under demanding conditions.
Precision Engineering: Manufactured to P4A tolerance class with bore and outside diameter tolerances of -0.004mm to 0, ensuring minimal runout and vibration. The 25° contact angle optimizes axial load carrying capacity while maintaining good radial performance.
High-Speed Capability: The phenolic cage provides excellent strength-to-weight ratio, contributing to the bearing's limiting speed of 36,000 rpm. This lightweight cage material reduces centrifugal forces, enabling stable high-speed operation.
Optimized Component Design: Features 17 chrome steel balls with a diameter of 15.875mm, precisely arranged to distribute loads evenly. The chrome steel rings provide superior wear resistance and dimensional stability across the operating temperature range of -30°C to 110°C.
7215 ACD/P4AQBCC Bearing Typical Application Areas
- Machine Tool Spindles: High-precision milling, grinding, and turning centers requiring extreme rigidity and accuracy
- Industrial Gearboxes: Heavy-duty transmission systems where combined loads and precise alignment are critical
- Precision Robotics: Articulated joints and positioning systems demanding high stiffness and minimal deflection
- Aerospace Actuation Systems: Flight control mechanisms and landing gear systems requiring reliable performance under varying loads
- High-Speed Compressors & Pumps: Rotating equipment where balanced operation and load capacity are essential
