S7011 ACDGA/P4A
Sealed Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
S7011 ACDGA/P4A
Basic Information
System of measurement
Metric
Weight
0.38 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
18 mm
Width tolerance
-0.2mm to 0
Contact angle
25 °
Ball & Washer Dimensions
Ball diameter
11.112 mm
Ball quantity
18
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
8348 lbf
Radial static load rating
6975 lbf
Limiting speed
34 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
Chrome Steel
Cage material
Phenolic
Technical Drawings
No drawings available at the moment, will be launched soon
Price:
$ 113.07
/ each
In Stock
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S7011 ACDGA/P4A Bearing Product Overview & Core Advantages
The S7011 ACDGA/P4A is a super-precision angular contact ball bearing designed for applications demanding the highest levels of accuracy, rigidity, and speed. Engineered to the exacting P4A tolerance class, this bearing excels in handling combined loads (radial and axial) simultaneously. Its 25° contact angle and Extra Light preload (Class A) deliver exceptional running accuracy and high system rigidity, making it ideal for high-speed spindles and other precision machinery where minimal deflection and maximum performance are critical.
S7011 ACDGA/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| S7011 | Basic bearing designation, indicating a metric series, 55mm bore, 90mm OD. |
| AC | Angular Contact design, optimized for combined loads. |
| D | High ball count and optimized internal geometry for increased load capacity. |
| GA | Indicates a Universal Matchable (SU) bearing, supplied in a set of 3 for precise preload control when mounted in pairs. |
| P4A | Super-precision tolerance class, exceeding ABEC 7/ISO P4 standards, ensuring ultra-low runout and vibration. |
S7011 ACDGA/P4A Bearing Structural Features & Performance Benefits
- High Rigidity & Precision: The combination of a 25° contact angle and Class A preload provides superior axial and radial stiffness, minimizing shaft displacement under load and ensuring exceptional positional accuracy.
- Optimized Load Capacity: The internal design with a high ball count (18) and large ball diameter (11.112 mm) results in a high dynamic and static load rating, enabling reliable performance under demanding combined loads.
- Superior High-Speed Performance: The lightweight phenolic resin cage reduces centrifugal forces, while the precision-ground raceways and high-grade steel contribute to a high limiting speed, making it a true high-speed bearing.
- Sealed & Pre-Lubricated: As a sealed bearing pre-lubricated with grease, it is protected from contamination and is ready for immediate use, offering long-term, maintenance-free operation within its specified temperature range.
S7011 ACDGA/P4A Bearing Typical Application Areas
This bearing is specifically engineered for the most demanding high-precision and high-speed applications, including:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Spindles: PCB drilling, semiconductor manufacturing equipment.
- High-Frequency Motors: Spindles for routers and high-speed electric motors.
- Medical Equipment: High-speed centrifuges and dental handpieces.
- Aerospace & Defense: Gyroscopes, radar systems, and other precision instrumentation.
