7020 CDTP/HCP4B
Hybrid Ceramic Super Precision Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
7020 CDTP/HCP4B
Basic Information
System of measurement
Metric
Weight
1.05 kg
Tolerance class
P4 (ABEC-7)
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
100 mm
Bore diameter tolerance
-0.008mm to 0
Outside diameter
150 mm
Outside diameter tolerance
-0.009mm to 0
Width
24 mm
Width tolerance
-0.2mm to 0
Contact angle
15 °
Ball & Washer Dimensions
Ball diameter
15.875 mm
Ball quantity
22
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
18720 lbf
Radial static load rating
19125 lbf
Limiting speed
10 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Single
Preload
Available
Materials
Ring material
Chrome Steel
Ball material
Ceramic
Cage material
Phenolic
Technical Drawings
No drawings available at the moment, will be launched soon
Price:
$ 1158.61
/ each
In Stock
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7020 CDTP/HCP4B Bearing Product Overview & Core Advantages
The 7020 CDTP/HCP4B is a high-precision angular contact ball bearing engineered for demanding applications requiring exceptional rotational accuracy and rigidity. As a single, preloaded bearing, it is designed to handle significant combined loads (radial and axial) simultaneously. Its defining features include a P4 (ABEC-7) tolerance class for superior running accuracy, a phenolic resin cage for high-speed capability, and ceramic balls that reduce centrifugal forces and enable higher limiting speeds. This configuration offers a compact, high-performance solution for spindles and other precision machinery.
7020 CDTP/HCP4B Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning | Advantage |
|---|---|---|
| CDTP | Indicates a specific combination of high Contact angle (15°), a Duplex preload arrangement, and a Phenolic cage. | Optimized for high rigidity and precise axial positioning under combined loads. The phenolic cage is ideal for high-speed operation. |
| HCP4B | Signifies Hybrid Ceramic balls (silicon nitride), a P4 tolerance class, and a specific internal preload level (B). | Enables higher limiting speeds, reduced friction and heat generation, and extended service life. The P4 tolerance ensures minimal runout and vibration. |
7020 CDTP/HCP4B Bearing Structural Features & Performance Benefits
- High Rigidity & Preload: The bearing is supplied as a preloaded single unit (Duplex arrangement), eliminating internal clearance. This provides maximum shaft rigidity, reduces deflection under load, and improves system natural frequency, which is critical for machining accuracy.
- Superior Load Capacity: With a 15° contact angle, this bearing is optimized to support substantial combined loads. The dynamic and static load ratings ensure reliable performance under demanding conditions.
- Exceptional High-Speed Performance: The combination of a lightweight phenolic cage and ceramic (hybrid) balls significantly reduces centrifugal forces and friction. This allows the bearing to achieve a high limiting speed of 10,000 rpm, making it suitable for high-speed spindle applications.
- Precision & Longevity: Manufactured to P4 (ABEC-7) tolerance standards, it guarantees precise rotational motion. The open design allows for optimized lubrication systems in the application, which can be tailored for maximum performance and service life.
7020 CDTP/HCP4B Bearing Typical Application Areas
This precision bearing is ideally suited for high-performance machinery where speed, accuracy, 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.
- High-Frequency Motors: Spindles for PCB drilling and other high-RPM electric motors.
- Advanced Robotics: Joints and actuators requiring high stiffness and precision.
