S7020 ACE/P4AQBCA
Sealed Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
S7020 ACE/P4AQBCA
Basic Information
System of measurement
Metric
Weight
5.28 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
96 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°C to 110 °C
Radial dynamic load rating
25200 lbf
Radial static load rating
33750 lbf
Limiting speed
16.25 X 1000 rpm
Lubrication
Grease
Matched arrangement
Quadruplex Back-to-Back (QBC)
Number of bearings in matched set
4
Universal matching bearing
No (Standard)
Preload
Extra light / Class A
Materials
Ring material
Chrome Steel
Ball material
Chrome Steel
Cage material
Phenolic
Technical Drawings
No drawings available at the moment, will be launched soon
In Stock
Price available upon request.
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S7020 ACE/P4AQBCA Bearing Product Overview & Core Advantages
The S7020 ACE/P4AQBCA is a precision quadruplex back-to-back angular contact ball bearing designed for demanding applications requiring exceptional rigidity and accuracy. This P4A tolerance class bearing is engineered to simultaneously handle significant combined radial and axial loads in both directions. Its compact, pre-matched quadruplex arrangement offers superior high rigidity and operational stability, making it ideal for high-precision, high-reliability machinery where minimal deflection is critical.
S7020 ACE/P4AQBCA Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning | Advantage |
|---|---|---|
| ACE | 25° Contact Angle, Extra Light Preload | Optimized for high-speed operation with minimal friction and heat generation. |
| P4A | High Precision Tolerance Class | Ensures extremely tight dimensional and running accuracy for superior performance. |
| QBC | Quadruplex Back-to-Back Arrangement | Provides maximum rigidity and moment load capacity in a pre-matched set. |
S7020 ACE/P4AQBCA Bearing Structural Features & Performance Benefits
- Exceptional Rigidity: The quadruplex back-to-back (QBC) arrangement of four bearings creates an extremely stiff bearing system, effectively resisting moment loads and minimizing shaft deflection under heavy combined loads.
- Superior Load Capacity: With a 25° contact angle and a robust design featuring 27 balls, this bearing offers high radial dynamic load rating of 25,200 lbf and a radial static load rating of 33,750 lbf, reliably managing complex load scenarios.
- Optimized High-Speed Performance: The lightweight phenolic cage and extra light preload (ACE) reduce centrifugal forces and friction, enabling a high limiting speed of 16,250 rpm. The grease lubrication is suitable for the specified operating range.
- Precision Engineering: Manufactured to P4A tolerance class with tight bore, outside diameter, and width tolerances, this bearing ensures precise running accuracy and consistent performance in the most demanding applications.
S7020 ACE/P4AQBCA Bearing Typical Application Areas
This bearing is specifically designed for high-precision, high-stiffness applications, including:
- Machine Tool Spindles (e.g., for milling, grinding, and turning centers)
- High-Speed Precision Drives
- Industrial Pumps and Compressors
- Robotic Arm Joints and Precision Gearboxes
