7012 CB/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
- Free shipping on orders over $200
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
7012 CB/HCP4A Bearing Product Overview & Core Advantages
The 7012 CB/HCP4A is a single-row angular contact ball bearing engineered for applications demanding high precision and superior rotational accuracy. Positioned in the P4 (ABEC-7) tolerance class, it is designed to handle significant axial loads in one direction and moderate radial loads. A key feature is the availability of preload, which enhances system rigidity and minimizes deflection under operational stresses. Its compact design, utilizing ceramic balls and a phenolic cage, makes it an ideal solution for high-speed spindles and other precision machinery where reliability and performance are critical.
7012 CB/HCP4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning | Significance |
|---|---|---|
| 7012 | Standard bearing series and size designation (60mm bore, 95mm OD, 18mm width) | Defines the core dimensions and series. |
| CB | Specific internal clearance and contact angle (15°) | Optimizes performance for specific mounting arrangements and load conditions. |
| HC | Hybrid Ceramic (Ceramic balls with steel rings) | Reduces friction, increases limiting speed, and provides non-conductive properties. |
| P4A | Tolerance class P4 (ABEC-7) with specific accuracy enhancements | Guarantees high precision and minimal runout for demanding applications. |
7012 CB/HCP4A Bearing Structural Features & Performance Benefits
Hybrid Ceramic Construction: The combination of chrome steel rings and silicon nitride (Si3N4) ceramic balls significantly reduces centrifugal forces and friction, enabling a high limiting speed of 36,000 rpm. This construction also offers electrical insulation and superior performance in high-temperature environments.
Phenolic Resin Cage: The lightweight and robust phenolic cage ensures excellent dimensional stability and low friction at high speeds, contributing to smooth operation and extended service life.
15° Contact Angle & Preload: The 15° contact angle is optimized for carrying high axial loads. The availability of preload eliminates internal clearance, resulting in greater system rigidity, improved positional accuracy, and reduced noise and vibration.
Precision Manufacturing (P4): Manufactured to P4 tolerance class, this bearing ensures tight control over dimensions and running accuracy, which is critical for applications like machine tool spindles.
7012 CB/HCP4A Bearing Typical Application Areas
The 7012 CB/HCP4A is ideally suited for high-performance applications across various industries, including:
- High-Speed Machine Tool Spindles (CNC milling, grinding)
- Precision Robotics and Automation Arms
- High-Frequency Motors and Spindle Drives
- Medical Equipment (e.g., Dental handpieces, Centrifuges)
- Aerospace Actuation Systems and Instrumentation
