S7011 ACE/P4A
Sealed Super Precision Angular Contact Ball Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
S7011 ACE/P4A
Basic Information
System of measurement
Metric
Weight
0.4 kg
Tolerance class
P4 (ABEC-7)
Seal type
Sealed
For load direction
Angular Contact
Main Dimensions
Bore diameter
55 mm
Bore diameter tolerance
-0.007mm to 0
Outside diameter
90 mm
Outside diameter tolerance
-0.008mm 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° to 110 °C
Radial dynamic load rating
3578 lbf
Radial static load rating
2610 lbf
Limiting speed
19 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Single
Preload
Available
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:
$ 434.01
/ each
In Stock
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S7011 ACE/P4A Bearing Product Overview & Core Advantages
The S7011 ACE/P4A is a precision angular contact ball bearing designed for applications demanding exceptional accuracy and high-speed performance. As a single-row bearing with P4 (ABEC-7) tolerance class, it delivers superior running precision. Its key advantage lies in its ability to accommodate combined loads—simultaneously handling substantial radial loads and axial loads in one direction—thanks to its 25° contact angle. The bearing comes preloaded and lubricated from the factory, ensuring immediate high rigidity and operational readiness, making it ideal for high-reliability, compact assemblies.
S7011 ACE/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning |
|---|---|
| ACE | Indicates a 25° contact angle and the bearing is preloaded. This specific combination optimizes the bearing for high rigidity and precise rotational accuracy. |
| P4A | Denotes a P4 tolerance class (equivalent to ABEC-7), signifying very high precision levels for dimensional and running accuracy. |
S7011 ACE/P4A Bearing Structural Features & Performance Benefits
- High Rigidity and Precision: The preload applied during manufacturing eliminates internal clearance, resulting in significantly increased stiffness and minimal axial and radial runout, which is critical for precision machining and positioning.
- Superior Load Capacity: The optimized 25° contact angle enables the bearing to efficiently support combined radial and axial loads, making it suitable for applications with complex loading conditions.
- High-Speed Performance: The lightweight phenolic resin cage ensures excellent stability and guidance of the balls at high rotational speeds, contributing to a high limiting speed of 19,000 rpm. The high-grade chrome steel construction ensures dimensional stability under centrifugal forces.
- Ready-to-Install & Sealed: As a sealed and pre-lubricated unit, the bearing is protected from contamination and is delivered ready for immediate installation, reducing maintenance requirements and enhancing service life.
S7011 ACE/P4A Bearing Typical Application Areas
This bearing is engineered for high-performance machinery where precision and speed are paramount. Key applications include:
- Machine Tool Spindles for milling, grinding, and turning centers
- High-Frequency Motors and spindle drives
- Precision Gearboxes and Robotic Actuators
- Medical Equipment such as dental handpieces and centrifuges
- Aerospace Instrumentation and control systems
