7012 ACE/HCP4ADT
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
7012 ACE/HCP4ADT Bearing Product Overview & Core Advantages
The 7012 ACE/HCP4ADT is a precision angular contact ball bearing designed for demanding applications requiring exceptional performance. This duplex tandem (DT) arrangement consists of two preloaded bearings, delivering superior axial rigidity and the ability to handle high thrust loads in one direction. Manufactured to an ABEC 7 / P4A tolerance class, it guarantees exceptional running accuracy. The combination of a phenolic cage and ceramic balls enables outstanding high-speed performance, making it an ideal solution for high-precision, high-reliability spindle systems.
Model Code Breakdown
| Code Segment | Technical Meaning | Benefit |
|---|---|---|
| 7012 | Standard bearing series with 60 mm bore, 95 mm OD, 36 mm width. | Defines the core bearing dimensions. |
| ACE | 25° contact angle, phenolic cage, P4A tolerance class. | Optimized for high-speed and high rigidity. |
| HC | Hybrid Ceramic (Silicon Nitride balls). | Reduced friction, lower operating temperature, and extended service life at high speeds. |
| P4A | High precision tolerance class (equivalent to ABEC 7). | Ensures minimal runout and vibration for superior precision. |
| DT | Duplex Tandem arrangement. | Preloaded pair for maximum axial load capacity and rigidity in one direction. |
7012 ACE/HCP4ADT Bearing Structural Features & Performance Benefits
Hybrid Ceramic Design: The use of silicon nitride (Si3N4) ceramic balls significantly reduces centrifugal forces, friction, and heat generation. This directly contributes to the high limiting speed of 35,000 rpm and allows for operation with less lubrication.
Duplex Tandem Preload: The two bearings are manufactured and supplied as a preloaded matched set. This eliminates internal clearance, providing immediate high rigidity and precise rotational accuracy from the moment of installation, which is critical for machine tool spindles.
Phenolic Resin Cage: The lightweight and robust phenolic cage offers excellent dimensional stability and low friction at high speeds, further supporting the bearing's high-speed capabilities.
Precision Engineering: The P4A tolerance class ensures tight control over all bearing dimensions and raceway geometry, resulting in smooth, quiet operation and minimal vibration.
7012 ACE/HCP4ADT Bearing Typical Application Areas
The 7012 ACE/HCP4ADT is engineered for the most demanding high-speed and high-precision applications, including:
- Machine Tool Spindles: CNC machining centers, grinding spindles, and milling spindles where high rigidity and speed are paramount.
- High-Speed Motors: Spindles for PCB drilling, dental handpieces, and other precision motor applications.
- Precision Instrumentation: Applications requiring minimal rotational error and high positional accuracy.
