7202 CD/HCP4A
Hybrid Ceramic Super Precision Bearings
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Part No.
Part No.
7202 CD/HCP4A
Basic Information
System of measurement
Metric
Weight
0.037 kg
Tolerance class
P4 (ABEC-7)
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
15 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
35 mm
Outside diameter tolerance
-0.006mm to 0
Width
11 mm
Width tolerance
-0.2mm to 0
Contact angle
15 °
Ball & Washer Dimensions
Ball diameter
6.35 mm
Ball quantity
10
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
1667 lbf
Radial static load rating
754 lbf
Limiting speed
85 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Single
Preload
Available
Materials
Ring material
Chrome Steel
Ball material
Ceramic
Cage material
Phenolic
Technical Drawings
No drawings available at the moment, will be launched soon
Price:
$ 78.88
/ each
In Stock
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7202 CD/HCP4A Bearing Product Overview & Core Advantages
The 7202 CD/HCP4A is a high-precision, single-row angular contact ball bearing engineered for demanding applications requiring exceptional accuracy and performance. Its defining feature is the 15° contact angle and ceramic ball construction, which enables it to handle combined loads—significant radial loads alongside high unidirectional axial loads—simultaneously. Manufactured to the stringent P4 (ABEC-7) tolerance class, it guarantees superior running accuracy and rotational stability. The combination of a phenolic cage and ceramic balls contributes to its high-speed capability, low friction, and extended service life, making it an ideal choice for high-speed spindles and other precision machinery.
Model Code Breakdown
| Code Segment | Technical Meaning |
|---|---|
| 7202 | Basic bearing series, indicating a 15mm bore, 35mm OD, and 11mm width. |
| C | Designates a 15° contact angle, optimized for high-speed operation. |
| D | Indicates the bearing is supplied with a specific preload for enhanced rigidity. |
| HC | Signifies the use of Hybrid Ceramic balls, offering reduced weight, lower friction, and higher speed potential. |
| P4 | The tolerance class (equivalent to ABEC-7), denoting ultra-high precision in dimensions and running accuracy. |
| A | Specifies that the bearing's internal geometry is optimized for a specific, high-precision mounting arrangement. |
7202 CD/HCP4A Bearing Structural Features & Performance Benefits
- Hybrid Ceramic Construction: The use of ceramic balls with steel rings results in a lighter, stiffer, and more inertia-resistant assembly. This directly enables a higher limiting speed (85,000 rpm), reduced operating temperature, and longer service life, especially in high-speed applications.
- High Rigidity and Preload: The bearing is supplied with a preload, which eliminates internal clearance. This significantly increases system stiffness, improves rotational accuracy, and dampens vibrations, which is critical for machining precision.
- Optimized for Combined Loads: The 15° contact angle is specifically designed to efficiently support substantial radial loads in conjunction with high unidirectional axial loads, a common requirement in spindle and pump applications.
- Phenolic Cage for High-Speed Performance: The lightweight and robust phenolic resin cage ensures stable operation at very high speeds, contributing to the bearing's overall high-speed capability and reliability.
- Precision Manufacturing: Conformance to the P4 tolerance class ensures minimal runout and vibration, which is essential for achieving superior surface finishes and positional accuracy in precision equipment.
7202 CD/HCP4A Bearing Typical Application Areas
This bearing is specifically designed for high-performance applications where speed, precision, and rigidity are paramount. Key industries and equipment include:
- High-Frequency Machine Tool Spindles: For CNC milling, grinding, and drilling where high rotational speeds and accuracy are required.
- Precision Robotics: In high-speed robotic arms and joints demanding low friction and high responsiveness.
- High-Speed Motors and Drives: Especially in motors for aerospace, medical devices, and semiconductor manufacturing.
- Advanced Pump and Compressor Systems: Where reliability under combined loads and high speeds is critical.
