7201 CD/HCP4A
Hybrid Ceramic Super Precision Bearings
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Main Dimensions
Ball & Washer Dimensions
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7201 CD/HCP4A Bearing Product Overview & Core Advantages
The 7201 CD/HCP4A is a high-precision angular contact ball bearing designed for demanding applications requiring exceptional accuracy and performance. Engineered to accommodate combined loads (radial and axial loads in one direction), this single bearing features a P4 (ABEC-7) tolerance class and is supplied with a preload for enhanced system rigidity and rotational accuracy. Its compact design, utilizing a phenolic cage and ceramic balls, makes it an ideal solution for high-speed, high-reliability machinery.
7201 CD/HCP4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7201 | Basic bearing series, indicating a metric 12mm bore, 32mm OD. |
| CD | Indicates a 15° contact angle and a specific internal design optimized for high rigidity and precise operation. |
| HC | Signifies the use of Hybrid Ceramic components (ceramic balls with steel rings). |
| P4 | Denotes the P4 tolerance class (ABEC-7), ensuring ultra-precise dimensions and runout for superior performance. |
| A | Indicates the bearing is supplied with a preload for immediate high rigidity and minimal deflection under load. |
7201 CD/HCP4A Bearing Structural Features & Performance Benefits
- Hybrid Ceramic Construction: The combination of chrome steel rings and ceramic balls reduces weight, lowers friction, and allows for higher operating speeds. It also provides superior resistance to wear and operates effectively with less lubrication.
- High Rigidity & Precision: The 15° contact angle and factory-applied preload deliver high system stiffness, minimizing axial and radial deflection under load for exceptional positional accuracy.
- Optimized for High-Speed Operation: The lightweight phenolic cage and hybrid ceramic design significantly reduce centrifugal forces, enabling a high limiting speed of 95,000 rpm.
- Superior Load Capacity: Engineered to handle combined loads efficiently, with a dynamic load rating of 1316 lbf and a static load rating of 574 lbf.
- Pre-Lubricated: Comes lubricated from the factory for immediate operation, suitable for the specified temperature range of -30°C to 110°C.
7201 CD/HCP4A Bearing Typical Application Areas
The 7201 CD/HCP4A is ideally suited for high-performance applications where speed, precision, and reliability are paramount. Key industries and equipment include:
- High-Speed Machining Spindles
- Precision Grinding Spindles
- Dental and Medical Handpieces
- High-Frequency Motors and Spindles
- Aerospace Instrumentation
- Semiconductor Manufacturing Equipment
