7020 ACD/HCP4AH1
Hybrid Ceramic Super Precision Bearings
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Part No.
Part No.
7020 ACD/HCP4AH1
Basic Information
System of measurement
Metric
Weight
1.05 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
24 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
17842 lbf
Radial static load rating
18000 lbf
Limiting speed
15 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Single
Number of bearings in matched set
2
Universal matching bearing
No (Standard)
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
In Stock
Price available upon request.
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7020 ACD/HCP4AH1 Bearing Product Overview & Core Advantages
The 7020 ACD/HCP4AH1 is a high-precision angular contact ball bearing engineered for demanding applications requiring exceptional accuracy and performance. This single bearing is designed to accommodate combined loads, primarily handling significant axial loads in one direction. Its P4A tolerance class ensures ultra-precision operation, while the combination of ceramic balls and a phenolic cage enables superior high-speed performance and thermal stability. Preloaded for immediate high rigidity, it is an ideal solution for machine tool spindles and other high-precision rotary systems.
7020 ACD/HCP4AH1 Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning |
|---|---|
| ACD | Indicates a 25° contact angle and optimized internal design for high axial load capacity and rigidity. |
| HCP4A | Denotes the P4A tolerance class, representing very high running accuracy. The "HC" prefix may refer to a specific internal design or material specification for high-capacity or high-speed use. |
| H1 | Signifies that the bearing is part of a matched set of 2 bearings, supplied pre-adjusted for immediate installation to achieve the desired preload and rigidity. |
7020 ACD/HCP4AH1 Bearing Structural Features & Performance Benefits
- High Rigidity & Precision: The P4A tolerance class and availability of preload ensure minimal runout and exceptional rotational accuracy, providing a stable and rigid platform for precision machinery.
- Superior High-Speed Capability: The lightweight phenolic resin cage and low-density ceramic balls significantly reduce centrifugal forces, enabling a high limiting speed and reducing operational friction and heat generation.
- Optimized Load Capacity: With a 25° contact angle, this bearing is specifically designed to handle high axial loads in one direction while simultaneously supporting substantial radial loads.
- Extended Service Life: Ceramic balls offer superior wear resistance, lower thermal expansion, and electrical insulation properties compared to standard steel balls, contributing to longer bearing life and reliability in challenging conditions.
7020 ACD/HCP4AH1 Bearing Typical Application Areas
This precision bearing is ideally suited for high-performance applications, including:
- Machine Tool Spindles (High-speed milling, grinding)
- Precision Grinding Machines
- High-Frequency Motors
- Medical and Dental Equipment Spindles
- Aerospace Instrumentation
