7011 ACD/HCP4A
Hybrid Ceramic Super Precision Bearings
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Part No.
Part No.
7011 ACD/HCP4A
Basic Information
System of measurement
Metric
Weight
0.32 kg
Tolerance class
P4 (ABEC-7)
Seal type
Open
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
11.112 mm
Ball quantity
18
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
8348 lbf
Radial static load rating
6975 lbf
Limiting speed
26 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Single
Preload
Available
Materials
Ring material
Chrome Steel
Ball material
Ceramic
Cage material
Phenolic
Technical Drawings
No drawings available at the moment, will be launched soon
Price:
$ 361.61
/ each
In Stock
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7011 ACD/HCP4A Bearing Product Overview & Core Advantages
The 7011 ACD/HCP4A is a single-row angular contact ball bearing engineered for applications demanding high precision and superior speed performance. Its defining feature is the 25° contact angle and ceramic ball construction, enabling it to handle significant combined loads (radial and axial) simultaneously. Manufactured to a P4 (ABEC-7) tolerance class, this bearing offers exceptional running accuracy and rotational stability, making it ideal for high-reliability, high-speed machinery.
7011 ACD/HCP4A Bearing Model Code Explained, Specifications & Naming Convention
| Suffix | Technical Meaning |
|---|---|
| ACD | Indicates a 25° contact angle, optimized for high axial load capacity and rigidity. |
| HC | Signifies the use of Hybrid Ceramic balls (steel rings with ceramic balls), which reduce friction, heat generation, and allow for higher limiting speeds. |
| P4A | Denotes a P4 tolerance class with specific accuracy and running accuracy requirements, equivalent to ABEC-7. |
7011 ACD/HCP4A Bearing Structural Features & Performance Benefits
- High-Speed & Low Friction: The combination of a lightweight phenolic resin cage and ceramic balls significantly reduces centrifugal forces and operating temperatures, enabling a high limiting speed of 26,000 rpm.
- Enhanced Rigidity & Load Capacity: The 25° contact angle provides high axial and radial stiffness, effectively supporting combined loads in demanding applications.
- Precision Performance: Manufactured to P4 precision class with tight dimensional tolerances on the bore, outside diameter, and width, ensuring smooth, quiet, and vibration-free operation.
- Preload Ready: The bearing is supplied with a specified preload, ensuring optimal stiffness and minimal axial/radial play from the moment of installation.
7011 ACD/HCP4A Bearing Typical Application Areas
This high-performance angular contact bearing is ideally suited for:
- High-Speed Machine Tool Spindles
- Precision Grinding Spindles
- High-Frequency Motors and Spindles
- Robotic Arm Joints and Precision Gearboxes
- Aerospace and Semiconductor Manufacturing Equipment
