7020 ACE/HCP4AL1DT
Hybrid Ceramic Super Precision Bearings
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Part No.
Part No.
7020 ACE/HCP4AL1DT
Basic Information
System of measurement
Metric
Weight
2.25 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
48 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
15502 lbf
Radial static load rating
16875 lbf
Limiting speed
20 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Duplex Tandem (DT)
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/HCP4AL1DT Bearing Product Overview & Core Advantages
The 7020 ACE/HCP4AL1DT is a high-precision duplex tandem angular contact ball bearing designed for demanding applications requiring exceptional accuracy and performance. This matched bearing set features a P4A super-precision tolerance class and is preloaded for immediate, high-stability operation. Its core advantage lies in its ability to handle combined loads (radial and axial) simultaneously with superior high rigidity, making it ideal for high-speed spindles and precision machinery where minimal deflection is critical. The use of ceramic balls and a phenolic cage further enhances its high-speed performance and thermal stability.
7020 ACE/HCP4AL1DT Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning |
|---|---|
| ACE | Indicates a 25° contact angle and specific internal design optimized for high-speed, high-rigidity applications. |
| HC | Signifies the use of Hybrid Ceramic balls, which reduce centrifugal forces, lower operating temperatures, and extend bearing life at high speeds. |
| P4A | Denotes a super-precision tolerance class with extremely tight dimensional and running accuracy, surpassing ABEC 7/ISO P4 standards. |
| L1 | Specifies a light preload on the matched set, ensuring high system stiffness and precise rotational accuracy from startup. |
| DT | Indicates a Duplex Tandem arrangement. Two bearings are matched to share the axial load in the same direction, significantly increasing axial load capacity in one direction. |
7020 ACE/HCP4AL1DT Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The duplex tandem (DT) arrangement and 25° contact angle create an exceptionally rigid bearing system capable of withstanding heavy combined loads. This configuration is engineered to handle substantial thrust loads in one direction while supporting radial loads.
- Superior High-Speed Performance: The combination of hybrid ceramic balls (lower density reduces centrifugal force) and a lightweight phenolic resin cage allows for a very high limiting speed of 20,000 rpm. This design minimizes friction, heat generation, and wear.
- Precision & Accuracy: Manufactured to P4A super-precision tolerances, this bearing ensures minimal runout and vibration, which is critical for applications requiring extreme positional accuracy and fine surface finishes.
- Optimized for Performance: The open seal type minimizes friction for maximum speed, while the pre-lubrication ensures immediate and smooth operation. The standard chrome steel rings provide excellent durability and fatigue resistance.
7020 ACE/HCP4AL1DT Bearing Typical Application Areas
This high-performance duplex tandem angular contact ball bearing is specifically engineered for the most demanding applications across various industries, including:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers where precision, rigidity, and speed are paramount.
- Precision Robotics: Arm joints and rotary actuators requiring high stiffness and accuracy.
- High-Frequency Spindles: PCB drilling, semiconductor manufacturing, and other applications involving very high rotational speeds.
- Medical Equipment: High-speed dental handpieces and precision laboratory instruments.
- Aerospace & Defense: Gyroscopes, radar systems, and other critical navigation and control systems.
