7020 ACD/P4ADBC
7000 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
7020 ACD/P4ADBC
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
15 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
Moderate / Class C
Materials
Ring material
Chrome Steel
Ball material
Chrome Steel
Cage material
Phenolic
Technical Drawings
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In Stock
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7020 ACD/P4ADBC Bearing Product Overview & Core Advantages
The 7020 ACD/P4ADBC is a precision duplex angular contact ball bearing designed for applications demanding exceptional rigidity and accuracy. This matched back-to-back arrangement (DB) provides superior stability under combined loads (radial and axial) and moments. Manufactured to P4A tolerance class, it ensures high running accuracy and is pre-lubricated for immediate use, making it ideal for high-performance, high-reliability machinery.
7020 ACD/P4ADBC Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning |
|---|---|
| AC | Angular Contact design with a 25° contact angle for optimal axial load capacity. |
| D | Duplex (Two bearings supplied as a matched set). |
| P4A | High precision tolerance class, exceeding ABEC 7 standards, for superior running accuracy. |
| DB | Back-to-Back arrangement. Provides high rigidity and can accommodate moment loads. |
| C | Moderate preload (Class C). Ensures precise shaft positioning and reduces deflection under load. |
7020 ACD/P4ADBC Bearing Structural Features & Performance Benefits
- High Rigidity & Stability: The duplex back-to-back (DB) design creates a wide, rigid support system that effectively resists moment loads and shaft deflection, ensuring precise alignment and smooth operation.
- Superior Load Capacity: The 25° contact angle and robust construction enable the bearing to handle significant combined radial and axial loads simultaneously.
- Precision Performance: Manufactured to P4A tolerance class with tight dimensional controls on bore, outside diameter, and width, guaranteeing high running accuracy and low vibration.
- Optimized for High-Speed Operation: The lightweight phenolic resin cage minimizes centrifugal forces, contributing to a high limiting speed of 15,000 rpm. The pre-applied lubrication ensures reliable performance from startup.
- Durable Construction: Components made from chrome steel provide high hardness and wear resistance, ensuring a long service life under demanding conditions.
7020 ACD/P4ADBC Bearing Typical Application Areas
This bearing is engineered for high-precision, high-speed machinery, including:
- Machine Tool Spindles (e.g., milling, grinding, and turning centers)
- High-Frequency Motors and Spindles
- Precision Gearboxes and Drives
- Industrial Pumps and Compressors
- Robotic Arms and Precision Positioning Systems
