S7020 ACD/HCP4ADBA
Hybrid Ceramic Super Precision Bearings
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Part No.
Part No.
S7020 ACD/HCP4ADBA
Basic Information
System of measurement
Metric
Weight
2.11 kg
Tolerance class
P4A
Seal type
Sealed
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
25 °
Ball & Washer Dimensions
Ball diameter
15.875 mm
Ball quantity
22
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
28575 lbf
Radial static load rating
36000 lbf
Limiting speed
16.25 X 1000 rpm
Lubrication
Grease
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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S7020 ACD/HCP4ADBA Bearing Product Overview & Core Advantages
The S7020 ACD/HCP4ADBA is a precision duplex back-to-back angular contact ball bearing designed for applications demanding exceptional rigidity and accuracy. This matched pair bearing set excels at simultaneously handling combined radial and axial loads from both directions. Its construction, featuring ceramic balls and a P4A super-precision tolerance, ensures high-speed capability, thermal stability, and long-term operational reliability in the most demanding environments.
S7020 ACD/HCP4ADBA Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning | Benefit |
|---|---|---|
| S7020 | Basic bearing designation (100mm bore, 150mm OD) | Defines core bearing dimensions. |
| ACD | Angular Contact, Duplex arrangement | Optimized for combined loads and high moment stiffness. |
| HCP4A | P4A Tolerance Class, Phenolic Cage | Ensures high precision and superior high-speed performance. |
| DBA | Back-to-Back (DB) Arrangement, Sealed | Provides high rigidity and protection from contamination. |
S7020 ACD/HCP4ADBA Bearing Structural Features & Performance Benefits
- Exceptional Rigidity: The duplex back-to-back (DB) matched arrangement creates a preloaded system that provides maximum resistance to moment loads and shaft deflection, ensuring superior positional accuracy.
- Enhanced Load Capacity: Engineered with a 25° contact angle, this bearing is optimized to handle significant combined radial and axial loads simultaneously.
- Superior High-Speed Performance: The combination of ceramic (Si3N4) balls and a lightweight phenolic resin cage reduces centrifugal forces, lowers operating temperature, and enables a high limiting speed of 16,250 rpm.
- Precision & Longevity: Manufactured to P4A tolerance class for ultra-precise running accuracy. The sealed design with pre-applied grease lubrication offers consistent performance and protects against contaminants.
S7020 ACD/HCP4ADBA Bearing Typical Application Areas
This high-performance bearing is ideally suited for advanced machinery requiring high speed, precision, and rigidity, including:
- High-Speed Machine Tool Spindles (CNC milling, grinding)
- Precision Robotics and Automation Arms
- High-Frequency Motors and Spindles
- Aerospace & Defense Actuation Systems
- Medical & Dental Equipment Spindles
