7020 CE/HCP4AQBCA
Hybrid Ceramic Super Precision Bearings
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Part No.
Part No.
7020 CE/HCP4AQBCA
Basic Information
System of measurement
Metric
Weight
4.49 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
Ceramic
Cage material
Phenolic
Technical Drawings
No drawings available at the moment, will be launched soon
Price:
$ 1503.52
/ each
In Stock
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7020 CE/HCP4AQBCA Bearing Product Overview & Core Advantages
The 7020 CE/HCP4AQBCA is a high-precision quadruplex angular contact ball bearing designed for demanding applications requiring exceptional rigidity and accuracy. This matched set of four bearings in a back-to-back (QBC) arrangement provides superior stability and can accommodate combined loads, including significant radial and axial loads in both directions. Manufactured to P4A tolerance class and featuring a phenolic cage with ceramic balls, this bearing is engineered for high-speed operation and long-term reliability in precision machinery.
7020 CE/HCP4AQBCA Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning |
|---|---|
| CE | Indicates 15° contact angle, optimized for high-speed applications and providing a balance between radial and axial load capacity. |
| HC | Refers to the hybrid ceramic construction, featuring ceramic balls for reduced weight, lower friction, and enhanced high-speed performance. |
| P4A | Denotes a high-precision tolerance class with extremely tight dimensional and running accuracy tolerances for critical applications. |
| QBC | Specifies the bearing is supplied as a Quadruplex (4 bearings) matched set in a Back-to-Back arrangement. This configuration provides maximum rigidity and moment load capacity. |
7020 CE/HCP4AQBCA Bearing Structural Features & Performance Benefits
- Exceptional Rigidity and Stability: The quadruplex back-to-back (QBC) arrangement creates a highly rigid bearing system that effectively resists moment loads and shaft deflection, making it ideal for precision spindles.
- Superior High-Speed Capability: The combination of a lightweight phenolic cage and ceramic balls (Hybrid CE) significantly reduces centrifugal forces, enabling a high limiting speed of 20,000 rpm. The 15° contact angle is also optimized for rapid rotation.
- High Load Capacity: Designed to handle significant combined radial and axial loads simultaneously. The matched set design ensures even load distribution across all four bearings.
- Precision Performance: Manufactured to P4A tolerance class with very tight bore, outside diameter, and width tolerances, ensuring minimal runout and superior rotational accuracy.
- Pre-Lubricated for Immediate Use: The bearing comes lubricated from the factory, ready for installation and initial operation within its specified temperature range.
7020 CE/HCP4AQBCA Bearing Typical Application Areas
The 7020 CE/HCP4AQBCA is specified for high-performance machinery where precision, speed, and rigidity are paramount. Key applications include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Grinding Spindles: Applications requiring ultra-fine surface finishes and tight tolerances.
- High-Frequency Motor Spindles: Used in PCB drilling and other high-RPM machining.
- Advanced Robotics: Precision joints and arms requiring high stiffness and accuracy.
