7214 ACD/P4ADT
7200 & 7300 Series Super Precision Angular Contact Ball Bearings
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7214 ACD/P4ADT Bearing Product Overview & Core Advantages
The 7214 ACD/P4ADT is a precision angular contact ball bearing designed for demanding applications requiring high rigidity and exceptional running accuracy. This duplex tandem (DT) arrangement consists of two preloaded bearings, enabling it to handle significant combined loads—primarily thrust loads in one direction—with superior stability. Manufactured to the stringent P4A tolerance class, it offers high dimensional accuracy and rotational precision, making it ideal for high-speed spindles and other precision machinery where reliability is paramount.
7214 ACD/P4ADT Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7214 | Basic bearing series with 70 mm bore, 125 mm OD, 48 mm width |
| AC | Angular Contact design with a 25° contact angle |
| D | Duplex arrangement |
| P4A | High precision tolerance class for exceptional running accuracy |
| DT | Duplex Tandem mounting for increased thrust capacity in one direction |
7214 ACD/P4ADT Bearing Structural Features & Performance Benefits
High Rigidity & Load Capacity: The duplex tandem arrangement and 25° contact angle provide exceptional stiffness, enabling the bearing to handle high combined loads with a rated dynamic load of 24,300 lbf and static load of 24,750 lbf. This configuration is optimized for applications with predominant thrust loads.
High-Speed Performance: Featuring a lightweight phenolic cage and precision-ground chrome steel components, this bearing achieves a limiting speed of 28,000 rpm. The optimized internal geometry minimizes friction and heat generation.
Precision Engineering: Manufactured to P4A tolerance class with tight dimensional controls (bore/OD tolerance: -0.004mm to 0), this bearing ensures minimal runout and vibration for superior rotational accuracy.
Preloaded & Ready-to-Mount: The bearings are supplied as a preloaded matched set, eliminating the need for complex adjustment during installation and ensuring immediate optimal performance.
7214 ACD/P4ADT Bearing Typical Application Areas
The 7214 ACD/P4ADT 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 Compressors - Industrial air compressors and turbochargers
- Robotics - High-precision robot joints and rotary tables
- Aerospace Systems - Guidance systems and auxiliary power units
