7214 CDGA/HCP4A
Hybrid Ceramic Super Precision Bearings
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Part No.
Part No.
7214 CDGA/HCP4A
Basic Information
System of measurement
Metric
Weight
0.95 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
24 mm
Width tolerance
-0.2mm to 0
Contact angle
15 °
Ball & Washer Dimensions
Ball diameter
15.875 mm
Ball quantity
16
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
15502 lbf
Radial static load rating
13162 lbf
Limiting speed
28 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Single
Number of bearings in matched set
4
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:
$ 343.14
/ each
In Stock
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7214 CDGA/HCP4A Bearing Product Overview & Core Advantages
The 7214 CDGA/HCP4A is a high-precision angular contact ball bearing engineered for demanding applications requiring exceptional rotational accuracy and rigidity. This single bearing features a 15° contact angle and is manufactured to P4A tolerance class, ensuring ultra-precise running characteristics. Its core advantages include the ability to accommodate combined loads (radial and axial), superior high-speed performance enabled by its phenolic cage and ceramic balls, and high operational reliability. It is universally matchable (SU), allowing for precise preload configuration when mounted with other bearings from the same manufacturing batch.
7214 CDGA/HCP4A Bearing Model Code Explained, Specifications & Naming Convention
The model number 7214 CDGA/HCP4A is decoded as follows:
- 7214: Basic series designation, indicating a medium-duty angular contact bearing with a 70 mm bore and 125 mm outside diameter.
- C: Signifies a 15° contact angle.
- D: Indicates the bearing is supplied as part of a universally matchable (SU) set.
- GA: Denotes an Extra Light (Class A) preload.
- HCP4A: Specifies the material and tolerance. HC indicates Hybrid Ceramic balls (ceramic balls with steel rings), and P4A is the tolerance class, representing very high precision.
7214 CDGA/HCP4A Bearing Structural Features & Performance Benefits
- Hybrid Ceramic Construction: The combination of chrome steel rings and ceramic balls significantly reduces friction, heat generation, and wear. This construction enables higher limiting speeds, extended service life, and improved performance in applications with electrical currents.
- Phenolic Cage: The lightweight and robust phenolic resin cage contributes to smooth operation at high speeds (28,000 rpm), offering excellent strength and guidance with minimal friction.
- High Precision & Rigidity: Manufactured to P4A tolerance class with tight dimensional tolerances on bore, outside diameter, and width, this bearing provides exceptional running accuracy and system rigidity, minimizing vibration and deflection.
- Optimized Load Capacity: The 15° contact angle is ideal for applications with high radial loads and moderate axial loads in one direction, with a dynamic load rating of 15,502 lbf and a static load rating of 13,162 lbf.
- Universal Matching: As part of a universally matchable set, these bearings can be mounted in various preloaded configurations (back-to-back, face-to-face, or tandem) to achieve the exact stiffness and running accuracy required by the application.
7214 CDGA/HCP4A Bearing Typical Application Areas
This precision bearing is ideally suited for high-performance machinery where speed, accuracy, and reliability are critical. Key application areas include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Grinding Spindles: Internal and external grinding applications.
- High-Frequency Motors and Spindles
- Aerospace Actuators and Control Systems
- Medical and Dental Equipment Spindles
