7011 ACB/P4A
7000 Series Super Precision Angular Contact Ball Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
7011 ACB/P4A
Basic Information
System of measurement
Metric
Weight
0.42 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
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
30 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:
$ 361.43
/ each
In Stock
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7011 ACB/P4A Bearing Product Overview & Core Advantages
The 7011 ACB/P4A is a single-row angular contact ball bearing designed for applications requiring high precision and superior rigidity. Engineered to accommodate combined loads (radial and axial) in one direction, it features a P4 (ABEC-7) tolerance class for exceptional running accuracy. Its phenolic resin cage and factory-applied lubrication enable reliable performance at high speeds up to 30,000 rpm, making it ideal for demanding, precision machinery.
7011 ACB/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Suffix | Technical Meaning |
|---|---|
| ACB | Designates a specific contact angle (25°) and internal design optimized for high rigidity and precise axial positioning. |
| P4A | Indicates a high-precision tolerance class (P4/ABEC-7) with enhanced dimensional and running accuracy requirements. |
7011 ACB/P4A Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The 25° contact angle and robust construction provide excellent resistance to combined loads, ensuring stable operation under significant radial and one-direction axial forces.
- High-Speed Performance: The lightweight phenolic resin cage reduces centrifugal forces, while the optimized internal geometry and pre-lubrication support a high limiting speed of 30,000 rpm.
- Precision Engineering: Manufactured to P4 tolerance class, this bearing delivers minimal runout and vibration, which is critical for applications requiring high rotational accuracy.
- Preload Availability: The bearing is supplied with a preload option, allowing for immediate high stiffness and precise shaft positioning without additional adjustment in the application.
7011 ACB/P4A Bearing Typical Application Areas
- Machine Tool Spindles
- High-Speed Machining Centers
- Precision Grinding Spindles
- High-Frequency Motors
- Robotic Drives and Actuators
