S7020 ACDGA/HCP4A
Hybrid Ceramic Super Precision Bearings
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Part No.
Part No.
S7020 ACDGA/HCP4A
Basic Information
System of measurement
Metric
Weight
1.06 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
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
16.25 X 1000 rpm
Lubrication
Grease
Matched arrangement
Single
Number of bearings in matched set
3
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:
$ 412.18
/ each
In Stock
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S7020 ACDGA/HCP4A Bearing Product Overview & Core Advantages
The S7020 ACDGA/HCP4A is a high-precision, double row angular contact ball bearing engineered for demanding applications requiring exceptional accuracy and rigidity. Its design enables it to support combined loads (radial and bidirectional axial loads) simultaneously. Featuring ceramic balls and a P4A super-precision tolerance class, this bearing is optimized for high-speed operation and offers superior stiffness and long service life in compact installations.
S7020 ACDGA/HCP4A Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning |
|---|---|
| AC | Angular Contact design, 25° contact angle. |
| D | Double row construction for high rigidity. |
| GA | Universal Matchable (SU) bearing in a set of 3, preloaded to Extra light / Class A. |
| HC | Hybrid Ceramic: Ceramic balls with steel rings. |
| P4A | Super Precision tolerance class, exceeding ABEC 7/ISO P4 standards. |
S7020 ACDGA/HCP4A Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The double row angular contact design provides significantly increased radial and axial stiffness, enabling stable performance under combined loads.
- Superior High-Speed Performance: The combination of ceramic balls (lower density, reduced centrifugal force) and a lightweight phenolic cage allows for a high limiting speed of 16,250 rpm, minimizing friction and heat generation.
- Precision & Longevity: Manufactured to P4A tolerance class with a 25° contact angle, this bearing ensures minimal runout and vibration, which is critical for precision spindles. The hybrid ceramic construction also enhances durability and resistance to wear.
- Pre-Lubricated & Sealed: The bearing comes grease lubricated and sealed, protecting against contamination and providing reliable, maintenance-free operation within its specified temperature range.
S7020 ACDGA/HCP4A Bearing Typical Application Areas
This high-performance precision bearing is ideally suited for applications demanding the highest levels of speed, accuracy, and rigidity, including:
- Machine Tool Spindles (High-speed milling, grinding)
- Precision Robotics and Automation Arms
- High-Frequency Motors and Spindles
- Medical Equipment (e.g., Dental handpieces, Centrifuges)
- Aerospace Instrumentation and Guidance Systems
