S7011 ACEGB/P4A
Sealed Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
S7011 ACEGB/P4A
Basic Information
System of measurement
Metric
Weight
0.4 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
7.938 mm
Ball quantity
24
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
3578 lbf
Radial static load rating
2610 lbf
Limiting speed
34 X 1000 rpm
Lubrication
Grease
Matched arrangement
Single
Number of bearings in matched set
4
Universal matching bearing
Universal Matchable (SU)
Preload
Light / Class B
Materials
Ring material
Chrome Steel
Ball material
Chrome Steel
Cage material
Phenolic
Technical Drawings
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In Stock
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S7011 ACEGB/P4A Bearing Product Overview & Core Advantages
The S7011 ACEGB/P4A is a super-precision angular contact ball bearing designed for applications demanding exceptional rotational accuracy and high-speed performance. As a single bearing with a Universal Matchable (SU) designation, it can be universally paired with other bearings from the same manufacturing lot to form precise matched sets without selective assembly. Its key advantages include the ability to handle combined loads (radial and axial) efficiently due to its 25° contact angle, outstanding operational stability provided by the P4A tolerance class, and long service life ensured by sealed construction and premium grease lubrication.
S7011 ACEGB/P4A Bearing Model Code Explained, Specifications & Naming Convention
| S7011 | Basic series designation for a super-precision angular contact ball bearing. |
| AC | Angular Contact design with a 25° contact angle. |
| E | Optimized internal design for increased load capacity. |
| GB | Signifies a Light preload (Class B) for enhanced rigidity and reduced vibration. |
| P4A | Indicates an ultra-precision tolerance class superior to ABEC 7, ensuring minimal runout and superior running accuracy. |
S7011 ACEGB/P4A Bearing Structural Features & Performance Benefits
- High Rigidity and Precision: Manufactured to P4A tolerance standards with a Light preload, this bearing delivers exceptional running accuracy and stiffness, making it ideal for applications requiring minimal deflection under load.
- Superior Load Capacity: The optimized internal geometry (E-design) and 25° contact angle enable it to support significant combined radial and axial loads simultaneously.
- High-Speed Capability: The lightweight, robust phenolic resin cage ensures stable operation and low centrifugal forces, contributing to a high limiting speed of 34,000 rpm.
- Maintenance-Free Operation: The integral seals and high-quality grease protect against contamination and provide reliable lubrication across a wide temperature range (-30°C to 110°C), resulting in a long, maintenance-free service life.
S7011 ACEGB/P4A Bearing Typical Application Areas
This bearing is engineered for the most demanding high-precision and high-speed machinery, including:
- Machine Tool Spindles: For high-speed milling, grinding, and turning centers.
- Precision Robotics: In robotic arm joints and spindle drives requiring high accuracy and rigidity.
- High-Frequency Spindles: Used in PCB drilling and semiconductor manufacturing equipment.
- Medical Equipment: In high-speed dental handpieces and imaging device rotors.
- Aerospace Instrumentation: For gyroscopes, actuators, and other critical control systems.
