7020 ACD/P4AQBCC
7000 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
7020 ACD/P4AQBCC
Basic Information
System of measurement
Metric
Weight
5.05 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
96 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
46800 lbf
Radial static load rating
72000 lbf
Limiting speed
16 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Quadruplex Back-to-Back (QBC)
Number of bearings in matched set
4
Universal matching bearing
No (Standard)
Preload
Moderate / Class C
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 ACD/P4AQBCC Bearing Product Overview & Core Advantages
The 7020 ACD/P4AQBCC is a precision quadruplex back-to-back angular contact ball bearing designed for demanding applications requiring exceptional rigidity and accuracy. This P4A tolerance class bearing is pre-lubricated and features a moderate preload (Class C), making it ideal for setups where high stiffness and precise rotational accuracy are paramount. Its unique matched arrangement of four bearings enables it to handle significant combined loads, including heavy radial and thrust loads, in a compact and highly rigid assembly. This configuration is engineered for high-performance machinery where uncompromising precision and reliability are essential.
7020 ACD/P4AQBCC Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7020 | Basic bearing designation indicating a 100 mm bore, 150 mm OD, and 24 mm width per single bearing. |
| ACD | Angular Contact Design with a 25° contact angle for optimal thrust capacity. |
| P4A | Indicates a high-precision tolerance class with very tight running accuracy and dimensional tolerances. |
| QBCC | Specifies a Quadruplex Back-to-Back (QBC) matched set arrangement with Class C preload for maximum system rigidity. |
7020 ACD/P4AQBCC Bearing Structural Features & Performance Benefits
- Exceptional Rigidity and Load Capacity: The quadruplex back-to-back (QBC) arrangement of four bearings creates an extremely rigid bearing system capable of withstanding heavy combined radial and axial loads from multiple directions. This design is critical for applications requiring minimal deflection under load.
- Precision Performance: Manufactured to P4A tolerance class standards, this bearing ensures ultra-precise running accuracy and dimensional stability, which is vital for high-speed, high-accuracy machinery.
- Optimized High-Speed Operation: The phenolic resin cage offers low weight and excellent performance at high rotational speeds, contributing to a limiting speed of 16,000 rpm. The standard 25° contact angle provides a balanced capability for both radial and axial loads at high speeds.
- Durable Construction: Components made from chrome steel for both rings and balls ensure high fatigue life and durability. The set is pre-lubricated for immediate installation and initial operation.
7020 ACD/P4AQBCC Bearing Typical Application Areas
This bearing is engineered for high-end industrial applications where precision, stiffness, and reliability are non-negotiable. Key sectors include:
- High-Precision Machine Tool Spindles: For milling, grinding, and turning centers requiring extreme rigidity and accuracy.
- High-Speed Spindles: In PCB drilling, precision engraving, and other applications demanding high rotational speeds.
- Robotic and Automation Systems: Particularly in high-accuracy robot arms and rotary joints.
- Advanced Medical Equipment: For imaging devices and surgical tool spindles.
- Aerospace and Defense Systems: In gyroscopes, radar systems, and other precision instrumentation.
