7020 CE/P4AQBCA
7000 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
7020 CE/P4AQBCA
Basic Information
System of measurement
Metric
Weight
5.04 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
15 °
Ball & Washer Dimensions
Ball diameter
12.7 mm
Ball quantity
27
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
26775 lbf
Radial static load rating
36000 lbf
Limiting speed
20 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
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
In Stock
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7020 CE/P4AQBCA Bearing Product Overview & Core Advantages
The 7020 CE/P4AQBCA is a precision quadruplex matched bearing set designed for applications demanding exceptional rigidity and rotational accuracy. This metric angular contact ball bearing configuration features an Extra Light (Class A) preload and a P4A tolerance class, making it ideal for high-speed spindles and other precision machinery. Its primary advantage lies in its ability to handle significant combined loads (radial and axial) while maintaining high running accuracy and system stability.
7020 CE/P4AQBCA Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7020 | Basic bearing series, indicating a 100 mm bore, 150 mm OD. |
| CE | Contact angle of 15°, optimized for high-speed operation and axial load capacity. |
| P4A | High-Precision Tolerance Class, with enhanced dimensional and running accuracy beyond standard P4. |
| QBC | Quadruplex Back-to-Back matched arrangement. Four bearings are supplied as a pre-matched set for maximum system rigidity. |
7020 CE/P4AQBCA Bearing Structural Features & Performance Benefits
- Exceptional Rigidity: The Quadruplex Back-to-Back (QBC) arrangement creates an extremely rigid bearing system, capable of resisting complex moment loads and minimizing shaft deflection under heavy cutting forces or operational stresses.
- High Load Capacity: The 15° contact angle design provides excellent capability for handling combined radial and axial loads simultaneously, ensuring reliable performance in demanding conditions.
- Optimized High-Speed Performance: The phenolic resin cage offers low weight and excellent performance at high rotational speeds, contributing to the bearing's limiting speed of 20,000 rpm. The P4A precision ensures smooth, low-vibration operation.
- Pre-Configured for Precision: Supplied as a factory-matched set of four bearings, this configuration guarantees consistent preload and optimal performance without the need for on-site adjustment, saving installation time and ensuring operational reliability.
7020 CE/P4AQBCA Bearing Typical Application Areas
This high-precision, high-rigidity bearing set is specifically engineered for advanced applications, including:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Grinding Spindles: Applications requiring ultra-fine surface finishes.
- High-Frequency Motorized Spindles: Where minimal runout and high dynamic stability are critical.
- Other Precision Rotary Equipment: Such as high-speed compressors and specialized test equipment.
