S7011 CD/P4ADGA
Sealed Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
S7011 CD/P4ADGA
Basic Information
System of measurement
Metric
Weight
0.76 kg
Tolerance class
P4A
Seal type
Sealed
For load direction
Angular Contact
Main Dimensions
Bore diameter
55 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
90 mm
Outside diameter tolerance
-0.004mm to 0
Width
36 mm
Width tolerance
-0.2mm to 0
Contact angle
15 °
Ball & Washer Dimensions
Ball diameter
11.112 mm
Ball quantity
18
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
14332 lbf
Radial static load rating
14738 lbf
Limiting speed
46 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
Chrome Steel
Cage material
Phenolic
Technical Drawings
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S7011 CD/P4ADGA Bearing Product Overview & Core Advantages
The S7011 CD/P4ADGA is a super-precision angular contact ball bearing designed for applications demanding the highest levels of rotational accuracy and rigidity. Operating under the stringent P4A tolerance class, this bearing excels in high-speed scenarios, with a limiting speed of 46,000 rpm. Its universal matchable (SU) design allows for flexible mounting in pairs to support combined loads, including significant radial and bidirectional axial loads. The combination of a phenolic cage and preloaded extra light (Class A) configuration ensures exceptional dynamic response and operational stability, making it ideal for high-reliability, high-precision machinery.
S7011 CD/P4ADGA Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning | Benefit |
|---|---|---|
| S7011 | Basic bearing series and size designation (55mm bore, 90mm OD). | Defines the core dimensions and series characteristics. |
| C | 15° contact angle. | Optimized for supporting combined radial and axial loads. |
| D | High-precision phenolic (polyamide) cage. | Reduces friction, enables higher speeds, and is suitable for high temperatures. |
| P4A | Super-precision tolerance class. | Guarantees extremely tight dimensional and running accuracy for minimal vibration. |
| GA | Universal matchable bearing (SU designation). | Allows for simplified pairing of two bearings to achieve preload and support axial loads in both directions. |
S7011 CD/P4ADGA Bearing Structural Features & Performance Benefits
- High Rigidity and Load Capacity: The angular contact design with a 15° contact angle and universal matching capability enables the bearing to be mounted in pairs (back-to-back or face-to-face) to create a highly rigid system that can withstand substantial combined loads.
- Super-Precision High-Speed Performance: Manufactured to P4A tolerance standards with a lightweight phenolic cage, this bearing achieves a high limiting speed of 46,000 rpm with minimal friction and heat generation.
- Optimized Internal Geometry: Featuring 18 precision balls of 11.112 mm diameter, the internal geometry is engineered for smooth rolling motion and even stress distribution, contributing to long service life and consistent performance under dynamic load ratings of 14,332 lbf.
- Sealed and Pre-Lubricated: As a sealed bearing pre-lubricated with grease, it is protected from contamination and is ready for immediate use, offering a maintenance-free solution within its specified temperature range of -30°C to 110°C.
S7011 CD/P4ADGA Bearing Typical Application Areas
The S7011 CD/P4ADGA is engineered for the most demanding precision applications, including:
- Machine Tool Spindles: For high-speed milling, grinding, and turning centers where accuracy and rigidity are paramount.
- Precision Grinding Spindles: Providing the necessary run-out accuracy and thermal stability for fine surface finishes.
- High-Frequency Motors and Spindles: Used in applications requiring extreme rotational speeds and low vibration.
- Aerospace and Defense Systems: Including gyroscopes, radar systems, and other precision instrumentation.
- Medical Equipment: Such as high-speed dental handpieces and laboratory centrifuges.
