S7020 ACE/HCP4A
Hybrid Ceramic Super Precision Bearings
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Part No.
Part No.
S7020 ACE/HCP4A
Basic Information
System of measurement
Metric
Weight
1.18 kg
Tolerance class
P4 (ABEC-7)
Seal type
Sealed
For load direction
Angular Contact
Main Dimensions
Bore diameter
100 mm
Bore diameter tolerance
-0.008mm to 0
Outside diameter
150 mm
Outside diameter tolerance
-0.009mm to 0
Width
24 mm
Width tolerance
-0.2mm to 0
Contact angle
25 °
Ball & Washer Dimensions
Ball diameter
12.7 mm
Ball quantity
27
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
9518 lbf
Radial static load rating
8550 lbf
Limiting speed
12.7 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:
$ 1390.38
/ each
In Stock
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S7020 ACE/HCP4A Bearing Product Overview & Core Advantages
The S7020 ACE/HCP4A is a high-precision angular contact ball bearing engineered for demanding applications requiring exceptional accuracy and performance. This single-row bearing features a 25° contact angle and is supplied with a preload, ensuring high system rigidity and minimal axial/radial runout. Its construction with a ceramic ball and phenolic cage enables superior high-speed capabilities and reduced rotating mass. Designed to handle combined loads, it is an ideal solution for high-reliability, high-rotation precision machinery.
S7020 ACE/HCP4A Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning |
|---|---|
| ACE | 25° contact angle and preloaded |
| HC | Hybrid Ceramic (Ceramic balls with steel rings) |
| P4A | High-Precision Tolerance Class (ABEC-7 / ISO P4) |
S7020 ACE/HCP4A Bearing Structural Features & Performance Benefits
- High Rigidity and Precision: The 25° contact angle and applied preload provide exceptional stiffness, critical for minimizing deflection under load and maintaining positioning accuracy in precision spindles.
- Superior High-Speed Performance: The combination of ceramic balls (lower density, reduced centrifugal force) and a lightweight phenolic resin cage significantly lowers friction and inertial mass, enabling a high limiting speed of 12,700 rpm.
- Extended Service Life & Reliability: Hybrid ceramic construction offers enhanced durability, electrical resistance, and the ability to operate with less lubrication. The bearing is pre-lubricated for immediate operation and long-term performance.
- Optimized Load Capacity: Engineered to support significant combined radial and axial loads, with a dynamic load rating of 9518 lbf and a static load rating of 8550 lbf.
S7020 ACE/HCP4A Bearing Typical Application Areas
This precision bearing is ideally suited for high-performance applications, including:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Robotics: Arm joints and high-accuracy rotary axes.
- High-Frequency Motors and Spindles: Where low vibration and thermal stability are paramount.
- Aerospace & Defense Systems: Gyroscopes, radar systems, and other critical rotating assemblies.
- Medical Equipment: Dental handpieces and high-speed laboratory centrifuges.
