7030 CD/HCP4A
Hybrid Ceramic Super Precision Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
Performance
Materials
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7030 CD/HCP4A Bearing Product Overview & Core Advantages
The 7030 CD/HCP4A is a single-row angular contact ball bearing engineered for high-precision and high-speed applications. Its defining characteristic is the 15° contact angle, which is optimized to support significant combined loads—handling both radial and unidirectional axial forces simultaneously. Manufactured to the exacting P4 (ABEC-7) tolerance class, this bearing delivers exceptional running accuracy. A key performance feature is its preload availability, which eliminates internal clearance to provide superior stiffness and rotational precision, making it ideal for demanding machine tool spindles and other precision equipment.
7030 CD/HCP4A Bearing Model Code Explained, Specifications & Naming Convention
| Model Segment | Technical Meaning |
|---|---|
| 7030 | Standard bearing series number, indicating the bearing dimensions (150mm bore, 225mm OD, 35mm width). |
| C | Designates a 15° contact angle. |
| D | Indicates the bearing is a matched arrangement (Duplex), supplied with a specific preload. |
| HC | Signifies the use of Hybrid Ceramic components (Ceramic balls with a steel ring). |
| P4 | The tolerance class, equivalent to ABEC-7, denoting very high precision. |
| A | Specifies the preload level (Light preload). |
7030 CD/HCP4A Bearing Structural Features & Performance Benefits
Hybrid Ceramic Construction: The combination of chrome steel rings and ceramic balls significantly reduces friction and operating temperature, enabling higher limiting speeds (11,000 rpm) and extended service life. This construction also provides superior resistance to electrical arcing.
High Rigidity & Precision: The preloaded single-row design ensures maximum system stiffness and minimal axial/radial runout, which is critical for maintaining accuracy in high-speed machining.
Optimized for High Speeds: The lightweight phenolic cage is designed for high-speed stability and reduced centrifugal forces, contributing to the bearing's excellent high-speed performance.
Superior Load Capacity: With a dynamic load rating of 38,700 lbf and a static load rating of 42,750 lbf, this bearing reliably handles demanding combined loads.
7030 CD/HCP4A Bearing Typical Application Areas
The 7030 CD/HCP4A is ideally suited for high-performance applications requiring precision and speed, including:
- Machine Tool Spindles (High-speed machining centers, grinding spindles)
- Precision Instrumentation
- High-Frequency Motors
- Aerospace & Defense Systems
- Medical Equipment (e.g., Dental handpieces)
