7020 ACDGA/VQ253
7000 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
7020 ACDGA/VQ253
Basic Information
System of measurement
Metric
Weight
1.26 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
15.875 mm
Ball quantity
22
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
17842 lbf
Radial static load rating
18000 lbf
Limiting speed
16 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Single
Number of bearings in matched set
2
Universal matching bearing
Universal Matchable (SU)
Preload
Extra light / Class A
Materials
Ring material
Chrome Steel
Ball material
Chrome Steel
Cage material
Phenolic
Technical Drawings
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In Stock
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Product Overview and Core Advantages
The 7020 ACDGA is a single row angular contact ball bearing designed for high-precision applications requiring superior rotational accuracy and rigidity. Engineered to a P4A super precision tolerance class, it excels in handling combined radial and axial loads simultaneously. Its 25° contact angle provides excellent axial load capacity, while the Universal Matchable (SU) designation allows for flexible mounting in preloaded duplex arrangements, delivering high rigidity and minimal runout for demanding machine tool and precision equipment applications.
7020 ACDGA/VQ253 Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning | Advantage |
|---|---|---|
| A | Extra Light Preload | Provides minimal starting torque and reduced heat generation, ideal for high-speed operation. |
| CD | High Contact Angle (25°) | Optimized for high axial load capacity and rigidity. |
| GA | Light Preload in Duplex Pair | Ensures precise shaft positioning and stiffness when mounted in pairs. |
Structural Features and Performance Benefits
- High Rigidity and Precision: Manufactured to P4A tolerance class with a phenolic resin cage, this bearing delivers exceptional dimensional stability and low vibration, crucial for high-speed spindles.
- Superior Load Capacity: The 25° contact angle and optimized internal geometry enable it to handle significant combined radial and axial loads efficiently.
- Optimized High-Speed Performance: The lightweight phenolic cage reduces centrifugal forces, supporting the limiting speed of 16,000 rpm. The open design and factory lubrication are tailored for effective external oil mist or oil jet systems.
- Universal Matching Capability (SU): Bearings are universally matchable, allowing for simplified mounting in back-to-back (DB) or face-to-face (DF) arrangements to achieve the required preload and system rigidity without selective sorting.
7020 ACDGA/VQ253 Bearing Typical Application Areas
- Machine Tool Spindles: High-speed machining centers, grinding spindles, and milling heads.
- Precision Equipment: Coordinate measuring machines, high-speed routers, and optical scanners.
- Industrial Pumps and Compressors: High-speed pump shafts and compressor impellers.
- Robotics and Automation: Precision robotic arm joints and high-accuracy rotary tables.
