7012 ACE/HCP4A
Hybrid Ceramic Super Precision Bearings
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Part No.
Part No.
7012 ACE/HCP4A
Basic Information
System of measurement
Metric
Weight
0.39 kg
Tolerance class
P4 (ABEC-7)
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
60 mm
Bore diameter tolerance
-0.007mm to 0
Outside diameter
95 mm
Outside diameter tolerance
-0.008mm to 0
Width
18 mm
Width tolerance
-0.2mm to 0
Contact angle
25 °
Ball & Washer Dimensions
Ball diameter
7.938 mm
Ball quantity
25
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
3668 lbf
Radial static load rating
2745 lbf
Limiting speed
33 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Single
Preload
Available
Materials
Ring material
Chrome Steel
Ball material
Ceramic
Cage material
Phenolic
Technical Drawings
No drawings available at the moment, will be launched soon
Price:
$ 417.32
/ each
In Stock
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7012 ACE/HCP4A Bearing Product Overview & Core Advantages
The 7012 ACE/HCP4A is a single, preloaded angular contact ball bearing designed for applications demanding exceptional rotational accuracy and rigidity. Engineered to a P4 (ABEC-7) tolerance class, it is a high-precision bearing ideal for supporting combined loads, primarily handling high axial loads in one direction with corresponding radial loads. Its compact design, featuring a phenolic cage and ceramic balls, contributes to superior high-speed performance and operational stability, making it a critical component for high-reliability, precision machinery.
7012 ACE/HCP4A Bearing Model Code Explained, Specifications & Naming Convention
| Suffix | Technical Meaning |
|---|---|
| 7012 | Standard bearing series designation indicating a 60 mm bore, 95 mm OD, and 18 mm width. |
| ACE | Indicates a 25° contact angle and that the bearing is preloaded. This configuration ensures high system rigidity and minimizes axial and radial play. |
| HC | Signifies the use of Hybrid Ceramic components, specifically ceramic balls, which reduce friction, weight, and wear, enabling higher limiting speeds. |
| P4A | Denotes the tolerance class P4 (ABEC-7) and specific running accuracy requirements, ensuring ultra-precise performance for demanding applications. |
7012 ACE/HCP4A Bearing Structural Features & Performance Benefits
- High Rigidity and Precision: The 25° contact angle and factory-applied preload work in tandem to deliver exceptional axial and radial stiffness, critical for minimizing deflection under load and maintaining positioning accuracy.
- Superior High-Speed Capability: The combination of a lightweight phenolic cage and low-density ceramic balls significantly reduces centrifugal forces, allowing for a high limiting speed of 33,000 rpm. This makes it an excellent high-speed bearing.
- Enhanced Durability and Life: Hybrid ceramic construction offers superior resistance to wear and a longer operational life compared to all-steel bearings, especially in high-speed or marginally lubricated conditions.
- Optimized for Precision Applications: Manufactured to P4 precision tolerances with tight dimensional control on the bearing dimensions (bore, OD, width), ensuring consistent and predictable performance in precision assemblies.
7012 ACE/HCP4A Bearing Typical Application Areas
This bearing is ideally suited for high-performance applications where speed, precision, and rigidity are paramount. Key industries and equipment include:
- Machine Tool Spindles: High-speed machining centers, grinding spindles.
- Precision Robotics: Arm joints and high-accuracy rotary axes.
- High-Frequency Motors and Spindles: Motors for PCB drilling and dental handpieces.
- Aerospace and Defense Systems: Gyroscopes, radar systems, and auxiliary power units.
