7201 CDGA/HCP4A
Hybrid Ceramic Super Precision Bearings
Image may differ from product. See technical specification for details.
Basic Information
Main Dimensions
Ball & Washer Dimensions
Performance
Materials
- Fast delivery
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
7201 CDGA/HCP4A Bearing Product Overview & Core Advantages
The 7201 CDGA/HCP4A is a single row angular contact ball bearing engineered for ultra-high precision applications requiring exceptional rotational accuracy and speed capability. Manufactured to P4A tolerance class, this bearing delivers superior runout control and dimensional stability. Its core advantages include the ability to handle combined radial and axial loads in one direction, facilitated by a 15° contact angle. The use of a phenolic cage and ceramic balls contributes to lower friction, higher limiting speeds, and extended service life, making it ideal for demanding, high-performance systems.
7201 CDGA/HCP4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7201 | Basic bearing series and size designation (12mm bore, 32mm OD). |
| C | Specifies a 15° contact angle. |
| DG | Indicates a Universal Matchable (SU) bearing, designed to be mounted in pairs (X or O arrangement) to achieve preload and handle bidirectional axial loads. |
| A | Denotes an Extra light preload (Class A). |
| HCP4A | Signifies the bearing is supplied as part of a universally matched pair (2 bearings) to P4A tolerance class. |
7201 CDGA/HCP4A Bearing Structural Features & Performance Benefits
- High Precision & Rigidity: Manufactured to ABEC 7 / P4A tolerance standards, this bearing ensures minimal runout and high system rigidity, which is critical for precision machining and positioning.
- Superior High-Speed Performance: The combination of a lightweight phenolic resin cage and low-density ceramic (silicon nitride) balls reduces centrifugal forces, enabling a high limiting speed of 95,000 rpm.
- Enhanced Durability and Temperature Resistance: Ceramic balls are harder and lighter than steel, offering superior wear resistance and the ability to operate effectively within a temperature range of -30°C to 110°C. The phenolic cage provides excellent dimensional stability at high speeds.
- Universal Matching Design: The Universal Matchable (SU) feature allows two identical bearings to be mounted face-to-face or back-to-back to create a preloaded set, simplifying assembly and ensuring optimal performance under combined loads.
7201 CDGA/HCP4A Bearing Typical Application Areas
This high-precision, high-speed angular contact bearing is ideally suited for applications where accuracy and rotational velocity are paramount. Key industries and equipment include:
- Machine Tool Spindles: For high-speed milling, grinding, and drilling centers.
- Precision Robotics: In high-accuracy robotic arms and joints.
- High-Frequency Spindles: Used in PCB drilling and routing equipment.
- Medical and Dental Equipment: In high-speed handpieces and scanners.
- Aerospace Instrumentation: For gyroscopes and navigation systems.
