S7022 ACD/HCP4A
Hybrid Ceramic Super Precision Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
S7022 ACD/HCP4A
Basic Information
System of measurement
Metric
Weight
1.66 kg
Tolerance class
P4 (ABEC-7)
Seal type
Sealed
For load direction
Angular Contact
Main Dimensions
Bore diameter
110 mm
Bore diameter tolerance
-0.008mm to 0
Outside diameter
170 mm
Outside diameter tolerance
-0.01mm to 0
Width
28 mm
Width tolerance
-0.2mm to 0
Contact angle
25 °
Ball & Washer Dimensions
Ball diameter
19.05 mm
Ball quantity
20
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
23400 lbf
Radial static load rating
23400 lbf
Limiting speed
8.5 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:
$ 1676.62
/ each
In Stock
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S7022 ACD/HCP4A Bearing Product Overview & Core Advantages
The S7022 ACD/HCP4A is a high-precision angular contact ball bearing engineered for demanding applications requiring exceptional rotational accuracy and rigidity. This single-row bearing features a 25° contact angle and is supplied with a preload, enabling it to handle significant combined loads (radial and axial) simultaneously while maintaining high running accuracy. Its construction with a phenolic cage and ceramic balls contributes to superior high-speed performance, low heat generation, and extended service life, making it an ideal choice for high-reliability, precision machinery.
S7022 ACD/HCP4A Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning |
|---|---|
| ACD | Indicates a 25° contact angle and that the bearing is supplied with a specific preload for high rigidity and precise shaft positioning. |
| HC | Refers to the Hybrid Ceramic construction, featuring steel rings and ceramic balls for reduced friction, higher speed capability, and longer life. |
| P4 | Denotes a high-precision tolerance class (ABEC-7 / ISO P4), ensuring extremely tight dimensional and running accuracy. |
| Sealed | The bearing is sealed and pre-lubricated, protecting against contamination and providing maintenance-free operation. |
S7022 ACD/HCP4A Bearing Structural Features & Performance Benefits
- High Rigidity and Precision: The 25° contact angle and applied preload significantly increase system stiffness, minimize deflection under load, and ensure exceptional running accuracy, which is critical for precision spindles.
- Superior High-Speed Capability: The combination of a lightweight phenolic resin cage and low-density silicon nitride (Si3N4) ceramic balls reduces centrifugal forces, lowers operating temperatures, and allows for a high limiting speed of 8,500 rpm.
- Enhanced Durability and Life: Ceramic balls are harder, smoother, and electrically resistant, leading to dramatically reduced wear, higher fatigue life, and protection against electrical arcing damage.
- Maintenance-Free Operation: As a sealed and lubricated unit, the bearing is protected from contaminants and is ready for immediate installation, reducing downtime and maintenance costs.
S7022 ACD/HCP4A Bearing Typical Application Areas
This high-precision angular contact ball bearing is ideally suited for applications where speed, accuracy, and reliability are paramount. Key industries and equipment include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- High-Frequency Motors and Spindles: PCB drilling spindles and electric motor spindles.
- Precision Robotics: Arm joints and high-accuracy rotary axes.
- Aerospace and Defense Systems: Gyroscopes, radar systems, and auxiliary power units.
