7012 ACD/P4ADT
7000 Series Super Precision Angular Contact Ball Bearings
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7012 ACD/P4ADT Bearing Product Overview & Core Advantages
The 7012 ACD/P4ADT is a precision angular contact ball bearing designed for demanding applications requiring exceptional rigidity and accuracy. As part of a Duplex Tandem (DT) matched set, this bearing is preloaded to provide superior axial and radial load capacity in a compact design. Its P4A tolerance class ensures high running accuracy, making it ideal for high-speed spindles and other precision machinery where uncompromising performance is critical.
7012 ACD/P4ADT Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7012 | Standard bearing series designation with 60mm bore, 95mm OD, and 36mm width. |
| AC | Angular Contact design with a 25° contact angle for optimal combined load handling. |
| D | Indicates a Duplex Tandem (DT) preloaded and matched set configuration. |
| P4A | Specifies a high-precision tolerance class for superior running accuracy and minimal runout. |
| DT | Confirms the bearing is supplied as one unit in a matched set of 2 bearings arranged in tandem. |
7012 ACD/P4ADT Bearing Structural Features & Performance Benefits
High Rigidity & Load Capacity: The Duplex Tandem arrangement and preload significantly increase system rigidity, enabling the bearing to handle substantial combined radial and axial loads simultaneously. The 25° contact angle is optimized for high axial load capacity.
High-Speed Performance: The lightweight phenolic resin cage minimizes centrifugal forces, contributing to a high limiting speed of 39,000 rpm. The open design and factory-applied lubrication facilitate efficient heat dissipation.
Precision Engineering: Manufactured to P4A tolerance class with tight dimensional control on bore, outside diameter, and width, this bearing ensures minimal vibration and high positional accuracy in the assembled application.
7012 ACD/P4ADT Bearing Typical Application Areas
This bearing is engineered for high-performance applications, including:
- Machine Tool Spindles (High-speed milling, grinding)
- Precision Spindles in PCB drilling and routing machines
- High-Frequency Motors and Encoder Systems
- Medical Equipment and Dental Handpieces
- Aerospace Actuation Systems
