7020 CE/HCP4ADBA
Hybrid Ceramic Super Precision Bearings
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Part No.
Part No.
7020 CE/HCP4ADBA
Basic Information
System of measurement
Metric
Weight
2.25 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
15 °
Ball & Washer Dimensions
Ball diameter
12.7 mm
Ball quantity
27
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
16380 lbf
Radial static load rating
18000 lbf
Limiting speed
20 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
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
In Stock
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7020 CE/HCP4ADBA Bearing Product Overview & Core Advantages
The 7020 CE/HCP4ADBA is a precision angular contact ball bearing designed for demanding applications requiring exceptional accuracy and performance. This duplex back-to-back (DB) arrangement provides superior high rigidity and stability, making it ideal for handling combined loads (radial and axial) simultaneously. Manufactured to a P4A tolerance class and featuring ceramic balls, this bearing offers excellent high-speed capabilities and extended service life in precision machinery.
7020 CE/HCP4ADBA Bearing Model Code Explained, Specifications & Naming Convention
The model number 7020 CE/HCP4ADBA breaks down as follows:
- 7020: Basic bearing series, indicating a 100mm bore and 150mm outside diameter.
- C: Denotes a 15° contact angle, optimized for high-speed applications with significant axial loads.
- E: Indicates an optimized internal design for enhanced performance.
- HC: Signifies the use of Hybrid Ceramic balls (ceramic balls with steel rings).
- P4A: Specifies the tolerance class, indicating very high running accuracy.
- A: Denotes an Extra Light (Class A) preload for minimal friction and optimal high-speed operation.
- DB: Identifies the bearing as part of a Duplex Back-to-Back matched set.
7020 CE/HCP4ADBA Bearing Structural Features & Performance Benefits
- High Rigidity & Stability: The duplex back-to-back (DB) arrangement of two bearings creates a rigid support system that effectively resists moment loads, making it exceptionally stable under complex loading conditions.
- Superior High-Speed Performance: The combination of a phenolic resin cage, hybrid ceramic balls (reducing centrifugal force and friction), and a 15° contact angle enables a high limiting speed of 20,000 rpm.
- Enhanced Precision & Longevity: Manufactured to P4A tolerance class standards, this bearing ensures minimal runout and vibration. The ceramic balls are non-corrosive and provide superior wear resistance, significantly extending the bearing's operational life.
- Optimized for Combined Loads: The angular contact design is inherently capable of supporting substantial radial and axial combined loads, with a dynamic load rating of 16,380 lbf and a static load rating of 18,000 lbf.
7020 CE/HCP4ADBA Bearing Typical Application Areas
This high-precision duplex bearing is ideally suited for applications where maximum rigidity, high speed, and accuracy are paramount. Key industries and machinery include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Grinding Spindles
- High-Frequency Motors and Spindles
- Robotic Arm Joints and Precision Gearboxes
- Aerospace and Semiconductor Manufacturing Equipment
