S7020 ACD/HCP4ADGA
Hybrid Ceramic Super Precision Bearings
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Part No.
Part No.
S7020 ACD/HCP4ADGA
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
Universal Matchable (SU)
Number of bearings in matched set
2
Universal matching bearing
Universal Matchable (SU)
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:
$ 858.07
/ each
In Stock
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S7020 ACD/HCP4ADGA Bearing Product Overview & Core Advantages
The S7020 ACD/HCP4ADGA is a high-precision double row angular contact ball bearing engineered for demanding applications requiring exceptional accuracy and reliability. This sealed bearing is designed to accommodate combined loads—simultaneously handling significant radial loads and bidirectional axial loads. Its compact design, featuring a universal matchable (SU) configuration, allows for versatile mounting arrangements and simplifies installation in high-rigidity systems. Manufactured to a super-precision P4A tolerance class and equipped with ceramic balls, it delivers superior performance in high-speed and high-stability environments.
S7020 ACD/HCP4ADGA Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning | Advantage |
|---|---|---|
| ACD | 25° Contact Angle, Double Row Design | Optimized for high axial and radial load capacity. |
| HC | Hybrid Ceramic (Silicon Nitride Balls) | Reduced friction, higher limiting speed, and longer service life. |
| P4A | Super Precision Tolerance Class (ABEC 7 / ISO P4) | Ensures exceptional running accuracy and system stability. |
| DGA | Sealed on Both Sides, Grease Lubricated | Provides contamination protection and is lubricated for life, offering maintenance-free operation. |
S7020 ACD/HCP4ADGA Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The double row angular contact design and 25° contact angle provide superior rigidity, enabling the bearing to support substantial combined radial and axial loads from both directions without the need for complex bearing arrangements.
- Enhanced High-Speed Performance: The combination of lightweight phenolic resin cage and low-friction ceramic balls significantly reduces centrifugal forces and operating temperatures, allowing for a high limiting speed of 16,250 rpm.
- Precision and Longevity: Manufactured to P4A super-precision standards, this bearing ensures minimal runout and vibration. The sealed construction with pre-applied grease effectively excludes contaminants and retains lubrication, resulting in a long, maintenance-free service life within a wide temperature range of -30°C to 110°C.
- Universal Matching (SU): As a universal matchable bearing, it can be mounted in various preload configurations (back-to-back, face-to-face, or tandem) with another identical bearing, providing design flexibility for optimal system performance.
S7020 ACD/HCP4ADGA Bearing Typical Application Areas
This precision angular contact ball bearing is ideally suited for high-performance machinery where accuracy, speed, and reliability are critical. Key applications include:
- Machine Tool Spindles: For high-speed milling, grinding, and turning centers.
- Precision Grinding Spindles: Where extreme running accuracy is required.
- High-Frequency Motors and Spindles: In PCB drilling and semiconductor manufacturing equipment.
- Medical and Laboratory Equipment: Such as centrifuges and high-speed scanners.
- Robotics and Automation: For high-accuracy rotary joints and arm assemblies.
