S7011 ACD/P4ADBC
Sealed Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
S7011 ACD/P4ADBC
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
25 °
Ball & Washer Dimensions
Ball diameter
11.112 mm
Ball quantity
18
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
13612 lbf
Radial static load rating
13950 lbf
Limiting speed
34 X 1000 rpm
Lubrication
Grease
Matched arrangement
Duplex Back-to-Back (DB)
Number of bearings in matched set
2
Universal matching bearing
No (Standard)
Preload
Moderate / Class C
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
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S7011 ACD/P4ADBC Bearing Product Overview & Core Advantages
The S7011 ACD/P4ADBC is a precision duplex back-to-back angular contact ball bearing designed for applications demanding exceptional rigidity and rotational accuracy. This matched pair bearing set is pre-loaded to a moderate (Class C) level, providing superior stiffness and stability under combined radial and axial loads. Manufactured to P4A tolerance class, it ensures minimal runout and high positional accuracy, making it ideal for high-speed spindles and other precision machinery where reliability is paramount.
Model Code In-Depth Analysis
| Suffix Code | Technical Meaning |
|---|---|
| ACD | Duplex arrangement in a Back-to-Back (DB) configuration. This setup provides high moment rigidity. |
| P4A | High precision tolerance class, specifying very tight dimensional and running accuracy limits. |
| DBC | Indicates the bearing is part of a matched set with a specified preload (Moderate / Class C). |
S7011 ACD/P4ADBC Bearing Structural Features & Performance Benefits
- High Rigidity & Stability: The duplex back-to-back (DB) arrangement creates a wide, rigid support system that effectively resists moment loads and shaft deflection, ensuring precise shaft positioning.
- Superior Load Capacity: The 25° contact angle and duplex design enable the bearing to handle significant combined radial and axial loads from both directions simultaneously.
- Optimized High-Speed Performance: The lightweight phenolic cage minimizes centrifugal forces, reduces friction, and contributes to the high limiting speed of 34,000 rpm. The grease lubrication is suitable for this operational range.
- Precision & Longevity: Manufactured from chrome steel and built to P4A tolerances, this bearing offers consistent performance, low noise, and extended service life in demanding conditions.
S7011 ACD/P4ADBC Bearing Typical Application Areas
This bearing is engineered for high-performance applications, including:
- Machine Tool Spindles (e.g., CNC milling, grinding, and turning centers)
- High-Frequency Motors and Precision Spindles
- Industrial Pumps and Compressors
- Robotic Drives and Precision Positioning Systems
