7020 ACD/P4ADGD
7000 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
7020 ACD/P4ADGD
Basic Information
System of measurement
Metric
Weight
2.53 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
15.875 mm
Ball quantity
22
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
28575 lbf
Radial static load rating
36000 lbf
Limiting speed
16 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Universal Matchable (SU)
Number of bearings in matched set
2
Universal matching bearing
Universal Matchable (SU)
Preload
Heavy / Class D
Materials
Ring material
Chrome Steel
Ball material
Chrome Steel
Cage material
Phenolic
Technical Drawings
No drawings available at the moment, will be launched soon
In Stock
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7020 ACD/P4ADGD Bearing Product Overview & Core Advantages
The 7020 ACD/P4ADGD is a precision angular contact ball bearing designed for demanding applications requiring exceptional rigidity and accuracy. As a universal matchable (SU) bearing supplied in a pre-set pair, it is engineered to accommodate combined loads—significant radial and thrust loads from any direction—simultaneously. Its P4A tolerance class ensures ultra-precision running accuracy, while the heavy preload (Class D) delivers maximum system stiffness, making it ideal for high-speed, high-rigidity spindles and precision machinery.
7020 ACD/P4ADGD Bearing Model Code Explained, Specifications & Naming Convention
The model number 7020 ACD/P4ADGD can be broken down as follows:
- 7020: Basic series number, indicating a 100mm bore and 150mm outside diameter.
- A: Signifies a 25° contact angle, optimized for supporting high axial loads.
- CD: Indicates a Universal Matchable (SU) bearing. Two bearings can be mounted in any combination (back-to-back, face-to-face, or tandem) to achieve the required rigidity and load capacity.
- P4A: Denotes an ultra-precision tolerance class superior to ABEC 7, ensuring extremely tight running accuracy and high-speed performance.
- DGD: Specifies a Heavy Preload (Class D). This preload eliminates internal clearance, resulting in superior rigidity and precise shaft positioning under load.
7020 ACD/P4ADGD Bearing Structural Features & Performance Benefits
- High Rigidity & System Stability: The universal matchable (SU) design, combined with a heavy preload, provides exceptional stiffness, minimizing deflection under heavy combined loads and ensuring precise rotational accuracy.
- Superior Load Capacity: The 25° contact angle and optimized internal geometry enable the bearing to handle high radial and bidirectional axial loads effectively.
- Precision High-Speed Operation: The phenolic resin cage and P4A precision grade contribute to smooth operation, reduced friction, and a high limiting speed of 16,000 rpm, suitable for high-speed spindle applications.
- Optimized for Precision Assembly: The bearings come as a pre-lubricated, matched set, simplifying installation and ensuring consistent, high-performance operation straight from the box.
7020 ACD/P4ADGD Bearing Typical Application Areas
This bearing is specifically engineered for high-performance applications where precision, speed, and rigidity are critical. Key industries and equipment include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Robotics: High-accuracy robotic arms and joints.
- High-Frequency Motors and Spindles
- Medical and Dental Equipment: CNC equipment for manufacturing medical components.
- Aerospace Test Rigs and Positioning Systems
