7214 CD/P4ADGC
7200 & 7300 Series Super Precision Angular Contact Ball Bearings
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7214 CD/P4ADGC Bearing Product Overview & Core Advantages
The 7214 CD/P4ADGC is a precision angular contact ball bearing designed for demanding applications requiring high rotational accuracy and rigidity. As a universally matchable (SU) bearing supplied in a moderate preload (Class C) duplex set, it excels at simultaneously handling combined radial and axial loads. Its P4A tolerance class ensures exceptional dimensional and running accuracy, making it ideal for high-speed spindles and other high-precision machinery where reliability and performance are critical.
7214 CD/P4ADGC Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7214 | Basic bearing series: 70-series angular contact, 70mm bore, 125mm OD, 48mm width |
| CD | Duplex arrangement with 15° contact angle, designed for universal matching (any combination) |
| P4A | High precision tolerance class (exceeds ABEC 7), ensuring minimal runout and vibration |
| DGC | Pre-greased with a specific high-performance lubricant suitable for the specified temperature range |
7214 CD/P4ADGC Bearing Structural Features & Performance Benefits
High Rigidity & Load Capacity: The duplex (double row) design and 15° contact angle provide superior stiffness, enabling the bearing to withstand significant combined loads (Radial dynamic: 25,200 lbf / Static: 26,100 lbf). This makes it exceptionally stable under complex loading conditions.
Precision & Speed Performance: Manufactured to P4A tolerance standards and featuring a phenolic resin cage, the bearing achieves a high limiting speed of 28,000 rpm. The cage material contributes to lower friction, reduced weight, and smoother operation at high velocities.
Universal Matchability & Simplified Mounting: As a Universal Matchable (SU) bearing supplied in a pre-set duplex pair, it simplifies installation. The moderate preload (Class C) is optimized for most applications, eliminating the need for complex preload adjustments and ensuring immediate, reliable performance.
Durability & Reliability: Constructed from chrome steel for both rings and balls, the bearing offers excellent wear resistance and longevity. It is pre-lubricated for immediate operation within a temperature range of -30°C to 110°C.
7214 CD/P4ADGC Bearing Typical Application Areas
- Machine Tool Spindles: High-speed milling, grinding, and turning centers requiring high precision and rigidity.
- Precision Grinding Spindles: Applications where minimal runout and vibration are critical for surface finish.
- High-Frequency Motors: Spindles for PCB drilling and other high-RPM electric motors.
- Industrial Pumps & Compressors: For handling axial and radial loads in demanding fluid-handling equipment.
- Medical & Laboratory Equipment: Centrifuges and other precision instruments that operate at high speeds.
