7214 ACD/HCP4ADGA
Hybrid Ceramic Super Precision Bearings
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Part No.
Part No.
7214 ACD/HCP4ADGA
Basic Information
System of measurement
Metric
Weight
1.9 kg
Tolerance class
P4A
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
70 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
125 mm
Outside diameter tolerance
-0.004mm to 0
Width
48 mm
Width tolerance
-0.2mm to 0
Contact angle
25 °
Ball & Washer Dimensions
Ball diameter
15.875 mm
Ball quantity
16
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
24300 lbf
Radial static load rating
24750 lbf
Limiting speed
28 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Universal Matchable (SU)
Number of bearings in matched set
2
Universal matching bearing
Universal Matchable (SU)
Preload
Extra light / Class A
Materials
Ring material
Chrome Steel
Ball material
Ceramic
Cage material
Phenolic
Technical Drawings
No drawings available at the moment, will be launched soon
Price:
$ 844.32
/ each
In Stock
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7214 ACD/HCP4ADGA Bearing Product Overview & Core Advantages
The 7214 ACD/HCP4ADGA is a high-precision, double-row angular contact ball bearing engineered for demanding applications requiring exceptional accuracy and reliability. Its universal matchable (SU) design allows for flexible mounting arrangements in preloaded sets, delivering superior running accuracy and system rigidity. This bearing is distinguished by its ceramic ball construction and P4A super-precision tolerance class, making it an ideal solution for high-speed spindles and other precision machinery where combined radial and axial loads must be managed with minimal thermal growth and vibration.
7214 ACD/HCP4ADGA Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning |
|---|---|
| ACD | Angular Contact Design with a 25° contact angle, optimized for high axial load capacity. |
| HC | Hybrid Ceramic construction, featuring ceramic balls for reduced friction, higher speed capability, and longer service life. |
| P4A | Super Precision tolerance class, exceeding ABEC 7 standards, ensuring extreme running accuracy and minimal vibration. |
| DGA | Universal Matchable (SU) designation, indicating the bearing is supplied pre-lubricated and ground to be mounted in a universal arrangement (face-to-face, back-to-back, or tandem) without further selection. |
7214 ACD/HCP4ADGA Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The double-row angular contact design provides superior stiffness and can support significant combined radial and axial loads from both directions simultaneously, making it suitable for complex loading conditions.
- Exceptional High-Speed Performance: The combination of ceramic balls (lower density, reduced centrifugal force) and a lightweight phenolic cage enables a very high limiting speed of 28,000 rpm, minimizing friction and heat generation.
- Precision & Accuracy: Manufactured to a P4A tolerance class with a precise 25° contact angle, this bearing guarantees exceptional running accuracy and positional stability, which is critical for machine tool spindles.
- Pre-Lubricated & Ready-to-Mount: The bearing comes pre-lubricated, simplifying installation and ensuring immediate, reliable operation within its specified temperature range of -30°C to 110°C.
7214 ACD/HCP4ADGA Bearing Typical Application Areas
This precision angular contact ball bearing is specifically designed 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: Where low vibration and high rotational accuracy are paramount.
- Advanced Robotic Systems: For joints and drives requiring high rigidity and precision.
