7020 CD/P4ADBD
7000 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
7020 CD/P4ADBD
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
15 °
Ball & Washer Dimensions
Ball diameter
15.875 mm
Ball quantity
22
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
30375 lbf
Radial static load rating
38250 lbf
Limiting speed
20 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Duplex Back-to-Back (DB)
Number of bearings in matched set
2
Universal matching bearing
No (Standard)
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 CD/P4ADBD Bearing Product Overview & Core Advantages
The 7020 CD/P4ADBD is a precision duplex angular contact ball bearing designed for applications demanding exceptional rigidity and accuracy. This matched back-to-back (DB) arrangement is preloaded to Heavy / Class D specifications, providing superior stiffness and minimal axial/radial runout. It excels at handling combined loads (radial and axial) simultaneously, making it ideal for high-precision, high-rigidity systems. Manufactured to a P4A tolerance class, it ensures outstanding rotational accuracy and reliable performance in demanding operational environments.
7020 CD/P4ADBD Bearing Model Code Explained, Specifications & Naming Convention
The model number 7020 CD/P4ADBD is decoded as follows:
- 7020: Basic bearing series, denoting a 100mm bore, 150mm OD, and 48mm width.
- C: Denotes a 15° contact angle, optimized for high axial load capacity.
- D: Indicates the bearing is supplied as a duplex pair.
- P4A: Specifies the tolerance class, indicating very high precision for dimensional and running accuracy.
- DB: Defines the Duplex Back-to-Back mounting arrangement, which increases moment rigidity and stability.
7020 CD/P4ADBD Bearing Structural Features & Performance Benefits
- High Rigidity & Stability: The back-to-back duplex arrangement and heavy preload create an extremely rigid bearing system that effectively resists moment loads and maintains precise shaft positioning.
- Superior Load Capacity: The 15° contact angle and robust construction provide excellent capacity for combined radial and axial loads.
- Precision Performance: Manufactured to P4A tolerance class with tight dimensional tolerances on bore, OD, and width, ensuring minimal runout and smooth, accurate rotation.
- High-Speed Capability: The lightweight, durable phenolic resin cage and optimized internal geometry contribute to a high limiting speed of 20,000 rpm, suitable for demanding spindle applications.
- Durable Construction: Components made from chrome steel offer high hardness and wear resistance, ensuring long service life under heavy loads.
7020 CD/P4ADBD Bearing Typical Application Areas
This high-precision duplex bearing is ideally suited for:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers requiring maximum rigidity and accuracy.
- Precision Gearboxes and High-Frequency Motor Spindles.
- Industrial Pumps and Compressors that operate under significant axial and radial forces.
- Robotic Arm Joints and Rotary Tables where positional accuracy is critical.
- Aerospace Actuation Systems and other high-performance machinery.
