7216 ACD/P4ATBTC
7200 & 7300 Series Super Precision Angular Contact Ball Bearings
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7216 ACD/P4ATBTC Bearing Product Overview & Core Advantages
The 7216 ACD/P4ATBTC is a precision angular contact ball bearing designed for demanding applications requiring exceptional rigidity and accuracy. As part of a triplex back-to-back (TBT) matched set, this bearing is engineered to handle combined loads—significant radial and axial loads—simultaneously. Its P4A tolerance class ensures ultra-precise rotational accuracy, making it ideal for high-speed spindles and other precision machinery where minimal runout and high system rigidity are critical.
7216 ACD/P4ATBTC Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7216 | Basic bearing series; 80 mm bore, 140 mm OD, 78 mm width |
| ACD | Angular Contact design with a 25° contact angle |
| P4A | High precision tolerance class for superior running accuracy |
| TBT | Triplex Back-to-Back arrangement in a matched set of 3 bearings |
| C | Moderate preload class for optimal stiffness and thermal management |
7216 ACD/P4ATBTC Bearing Structural Features & Performance Benefits
High Rigidity & Load Capacity: The triplex back-to-back configuration creates an extremely rigid bearing system capable of withstanding heavy combined radial and axial loads. The 25° contact angle is optimized for handling substantial thrust loads in both directions while maintaining excellent radial load capacity.
Precision Performance: Manufactured to P4A tolerance standards with bore and outside diameter tolerances of -0.004mm to 0, this bearing ensures minimal vibration and precise rotational characteristics. The phenolic cage provides excellent guidance and stability at high speeds.
High-Speed Capability: With a limiting speed of 28,000 rpm and optimized internal geometry, this bearing delivers reliable performance in demanding high-speed applications. The phenolic cage material contributes to reduced friction and improved high-speed operation.
Premium Materials: Constructed from chrome steel for both rings and balls, this bearing offers superior durability and fatigue resistance. The combination of 17 precision balls with a diameter of 17.462 mm ensures optimal load distribution and long service life.
7216 ACD/P4ATBTC Bearing Typical Application Areas
The 7216 ACD/P4ATBTC is specifically engineered for high-performance applications including:
- Machine Tool Spindles - High-speed milling, grinding, and turning centers
- Precision Spindles - PCB drilling, semiconductor manufacturing equipment
- High-Speed Motors - Industrial motors and generators requiring precise positioning
- Aerospace Components - Guidance systems and precision actuators
- Medical Equipment - High-speed dental handpieces and surgical tools
