S7011 ACB/P4A
Sealed Super Precision Angular Contact Ball Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
S7011 ACB/P4A
Basic Information
System of measurement
Metric
Weight
0.42 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
6.747 mm
Ball quantity
26
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
2992 lbf
Radial static load rating
2340 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:
$ 434.1
/ each
In Stock
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S7011 ACB/P4A Bearing Product Overview & Core Advantages
The S7011 ACB/P4A is a single-row angular contact ball bearing engineered for applications demanding high precision and superior performance. This metric bearing is distinguished by its P4 (ABEC-7) tolerance class, ensuring exceptional dimensional accuracy and running precision. A key feature is its preload availability, which eliminates internal clearance to provide high system rigidity, reduced vibration, and precise shaft positioning. It is pre-lubricated and sealed for long-term, maintenance-free operation, making it an ideal solution for high-speed spindles and other precision machinery.
S7011 ACB/P4A Bearing Model Code Explained, Specifications & Naming Convention
The model number S7011 ACB/P4A provides detailed technical specifications through its suffixes:
- S7011: Denotes the basic bearing series and size (55mm bore, 90mm OD, 18mm width).
- ACB: Signifies Angular Contact bearing design with a 25° contact angle, optimized for combined radial and axial loads.
- P4A: Indicates the tolerance class P4 (ABEC-7), representing very high precision levels for critical applications.
S7011 ACB/P4A Bearing Structural Features & Performance Benefits
- High Precision & Rigidity: Manufactured to a P4 tolerance class and available with preload, this bearing delivers exceptional running accuracy and high rigidity, which is crucial for minimizing deflection under load.
- Superior Load Capacity: The 25° contact angle and robust construction using chrome steel rings and balls enable it to handle significant combined radial and axial loads simultaneously.
- High-Speed Capability: The lightweight phenolic resin cage ensures stability and low friction, contributing to a high limiting speed of 19,000 rpm. The pre-applied lubrication is formulated for stable performance at these elevated speeds.
- Sealed & Lubricated for Long Life: The integrated seals protect against contamination and retain lubrication, enabling maintenance-free operation within a wide temperature range of -30°C to 110°C.
S7011 ACB/P4A Bearing Typical Application Areas
The S7011 ACB/P4A is designed for high-performance applications where precision and speed are paramount. Its typical uses include:
- Machine Tool Spindles
- High-Frequency Motors
- Precision Grinding Spindles
- Industrial Pumps and Compressors
- Aerospace Control Systems
