7020 ACE/HCP4AH1
Hybrid Ceramic Super Precision Bearings
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Part No.
Part No.
7020 ACE/HCP4AH1
Basic Information
System of measurement
Metric
Weight
1.12 kg
Tolerance class
P4A
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
100 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
150 mm
Outside diameter tolerance
-0.004mm to 0
Width
24 mm
Width tolerance
-0.2mm to 0
Contact angle
25 °
Ball & Washer Dimensions
Ball diameter
12.7 mm
Ball quantity
27
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
9518 lbf
Radial static load rating
8550 lbf
Limiting speed
20 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Single
Number of bearings in matched set
2
Universal matching bearing
No (Standard)
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
In Stock
Price available upon request.
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7020 ACE/HCP4AH1 Bearing Product Overview & Core Advantages
The 7020 ACE/HCP4AH1 is a high-precision angular contact ball bearing engineered for demanding applications requiring exceptional accuracy and performance. This single bearing features a 25° contact angle and is supplied preloaded and lubricated from the factory, making it ready for immediate installation. Its core advantages include the ability to accommodate combined radial and axial loads simultaneously, superior high-speed capability enabled by its phenolic cage and ceramic balls, and outstanding operational reliability due to its P4A super precision tolerance class. This design delivers high rigidity and stable rotational accuracy, making it ideal for high-performance spindles and precision machinery.
7020 ACE/HCP4AH1 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7020 | Standard bearing series designation, indicating bore diameter of 100 mm and outside diameter of 150 mm. |
| ACE | A specific manufacturer's internal designation for this bearing's configuration, typically indicating a 25° contact angle and preload condition. |
| HC | Denotes Hybrid Ceramic construction, featuring steel rings and ceramic balls for reduced weight, lower friction, and higher speed capability. |
| P4A | Specifies the tolerance class, representing a super precision grade with extremely tight running accuracy and dimensional tolerances. |
| H1 | Indicates that this is one bearing from a matched set of 2 bearings, designed to be used together in a specific arrangement. |
7020 ACE/HCP4AH1 Bearing Structural Features & Performance Benefits
- Hybrid Ceramic Design: The combination of chrome steel rings and silicon nitride (Si3N4) ceramic balls significantly reduces centrifugal forces, lowers operating temperature, and enables a higher limiting speed (20,000 rpm). This results in extended service life, especially in high-speed applications.
- Phenolic Resin Cage: The lightweight and robust phenolic cage offers excellent guidance for the ceramic balls, contributing to smooth operation, low vibration, and high rotational stability at extreme speeds.
- Preloaded & Lubricated: The bearing is supplied with a pre-applied, high-performance grease and a factory-set preload. This ensures immediate high rigidity, minimizes axial and radial play, and provides consistent performance from startup, reducing the need for complex on-site adjustment.
- Super-Precision P4A Tolerances: Manufactured to P4A tolerance class, this bearing guarantees exceptional dimensional stability and running accuracy, which is critical for applications demanding minimal runout and vibration.
- High Load Capacity: With a dynamic load rating of 9518 lbf and a static load rating of 8550 lbf, the 7020 ACE/HCP4AH1 is capable of handling significant combined loads.
7020 ACE/HCP4AH1 Bearing Typical Application Areas
This precision angular contact ball bearing is ideally suited for high-performance machinery where speed, accuracy, and rigidity are paramount. Key application areas include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Robotics: Arm joints and high-accuracy rotary axes.
- High-Frequency Motors and Spindles: PCB drilling spindles and dental handpieces.
- Aerospace & Defense Systems: Gyroscopes, radar platforms, and navigation instruments.
- Medical Equipment: CT scanner gantries and high-speed centrifuges.
