7020 ACD/P4ATBTA
7000 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
7020 ACD/P4ATBTA
Basic Information
System of measurement
Metric
Weight
3.79 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
72 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
38700 lbf
Radial static load rating
54000 lbf
Limiting speed
16 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Triplex Back-to-Back (TBT)
Number of bearings in matched set
3
Universal matching bearing
No (Standard)
Preload
Extra light / Class A
Materials
Ring material
Chrome Steel
Ball material
Chrome Steel
Cage material
Phenolic
Technical Drawings
No drawings available at the moment, will be launched soon
Price:
$ 896.55
/ each
In Stock
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7020 ACD/P4ATBTA Bearing Product Overview & Core Advantages
The 7020 ACD/P4ATBTA is a precision angular contact ball bearing designed for applications demanding exceptional rigidity and running accuracy. As part of a triplex back-to-back (TBT) matched set, this bearing is engineered to handle complex combined loads, including high radial and axial loads in both directions. Manufactured to the stringent P4A tolerance class, it offers superior dimensional stability and rotational precision. Its extra light preload ensures minimal friction and optimal performance in high-speed operations, making it an ideal choice for high-precision, high-rigidity spindles.
7020 ACD/P4ATBTA Bearing Model Code Explained, Specifications & Naming Convention
The model number 7020 ACD/P4ATBTA provides detailed technical specifications through its suffixes:
- 7020: Basic bearing series, indicating a 100mm bore and 150mm outside diameter.
- ACD: Angular Contact design with a 25° contact angle.
- P4A: Denotes a super-precision tolerance class with enhanced running accuracy and dimensional control.
- TB: Indicates the bearing is part of a Triplex Back-to-Back matched arrangement.
- TA: Specifies the Extra Light (Class A) preload for optimal stiffness and speed capability.
7020 ACD/P4ATBTA Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The triplex back-to-back (TBT) arrangement of three bearings creates an extremely rigid system capable of withstanding significant combined radial and axial loads from multiple directions.
- Precision Performance: The P4A tolerance class ensures minimal runout and vibration, which is critical for maintaining high positional accuracy in precision machinery.
- Optimized High-Speed Operation: The combination of a phenolic resin cage, 25° contact angle, and extra light preload minimizes friction and heat generation, enabling a high limiting speed of 16,000 rpm.
- Superior Material Construction: Manufactured from chrome steel for both rings and balls, providing high hardness, wear resistance, and long service life under demanding conditions.
7020 ACD/P4ATBTA Bearing Typical Application Areas
This bearing is specifically engineered for high-performance applications where precision, speed, and rigidity are paramount. Key industries and equipment include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Grinding Spindles: Internal and external grinding machines.
- High-Frequency Motorized Spindles
- Industrial Pumps and Compressors
- Advanced Robotics and Automation Equipment
