7020 ACD/P4ADFB
7000 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
7020 ACD/P4ADFB
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
Duplex Face-to-Face (DF)
Number of bearings in matched set
2
Universal matching bearing
No (Standard)
Preload
Light / Class B
Materials
Ring material
Chrome Steel
Ball material
Chrome Steel
Cage material
Phenolic
Technical Drawings
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7020 ACD/P4ADFB Bearing Product Overview & Core Advantages
The 7020 ACD/P4ADFB is a precision duplex angular contact ball bearing designed for applications requiring exceptional rotational accuracy and high rigidity. This matched set features a Face-to-Face (DF) arrangement and a Light preload (Class B), making it ideal for supporting combined loads (radial and axial) in both directions. Manufactured to a P4A tolerance class, it delivers superior running accuracy and is pre-lubricated for immediate use in high-performance systems.
7020 ACD/P4ADFB Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning |
|---|---|
| AC | Angular Contact design with a 25° contact angle. |
| D | Duplex (two bearings supplied as a matched set). |
| P4A | High precision tolerance class, exceeding ABEC-7 standards. |
| DF | Face-to-Face mounting arrangement for increased moment rigidity. |
| B | Light preload classification for optimal stiffness and speed performance. |
7020 ACD/P4ADFB Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The duplex DF arrangement and light preload create a highly rigid bearing system capable of handling significant combined radial and axial loads from both directions simultaneously.
- Precision Performance: The P4A tolerance class ensures minimal runout and vibration, which is critical for applications demanding high positional accuracy.
- Optimized High-Speed Capability: The phenolic resin cage offers low friction and is suitable for high-speed operation up to the specified limiting speed, while the standard lubrication ensures smooth running.
- Durable Construction: Components made from chrome steel provide high fatigue life and durability under demanding operating conditions.
7020 ACD/P4ADFB Bearing Typical Application Areas
This precision duplex bearing is ideally suited for:
- Machine Tool Spindles
- High-Precision Grinding Machines
- Industrial Pumps and Compressors
- Robotic Arm Joints and Precision Gearboxes
