7011 ACD/P4ATGC
7000 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
7011 ACD/P4ATGC
Basic Information
System of measurement
Metric
Weight
1.13 kg
Tolerance class
P4A
Seal type
Open
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
54 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°C to 110 °C
Radial dynamic load rating
18135 lbf
Radial static load rating
20925 lbf
Limiting speed
34 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Universal Matchable (SU)
Number of bearings in matched set
3
Universal matching bearing
Universal Matchable (SU)
Preload
Moderate / Class C
Materials
Ring material
Chrome Steel
Ball material
Chrome Steel
Cage material
Phenolic
Technical Drawings
No drawings available at the moment, will be launched soon
In Stock
Price available upon request.
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7011 ACD/P4ATGC Bearing Product Overview & Core Advantages
The 7011 ACD/P4ATGC is a precision angular contact ball bearing designed for demanding applications requiring high rigidity and exceptional running accuracy. As a universal matchable (SU) bearing, it can be mounted in various preload configurations (back-to-back, face-to-face, or tandem) with other bearings from the same manufacturing batch, offering exceptional design flexibility. Its P4A tolerance class ensures superior dimensional and running accuracy, making it ideal for high-speed spindles and other precision machinery. The bearing is pre-lubricated for immediate use and features a phenolic cage, contributing to its high limiting speed of 34,000 rpm.
7011 ACD/P4ATGC Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning | Advantage |
|---|---|---|
| ACD | 25° Contact Angle | Optimized for carrying significant combined loads (radial and axial). |
| P4A | High Precision Tolerance Class | Guarantees superior running accuracy and low vibration for high-speed operation. |
| TGC | Phenolic (Polyamide) Cage | Reduces friction and weight, enabling higher limiting speeds and excellent acceleration characteristics. |
7011 ACD/P4ATGC Bearing Structural Features & Performance Benefits
- High Rigidity and Load Capacity: The 25° contact angle and robust construction enable the bearing to support substantial combined radial and axial loads simultaneously, providing stable and rigid support for spindles.
- Superior High-Speed Performance: The lightweight and durable phenolic cage (TGC) minimizes centrifugal forces and ensures stable operation at the high limiting speed of 34,000 rpm.
- Precision Engineering: Manufactured to P4A tolerance class with tight dimensional controls on the bore diameter (55 mm), outside diameter (90 mm), and width (54 mm), ensuring predictable performance and easy integration into precision assemblies.
- Universal Matchability (SU): Allows for flexible mounting in sets of two or more bearings to achieve specific preload and stiffness requirements without selective matching, simplifying inventory and assembly processes.
7011 ACD/P4ATGC Bearing Typical Application Areas
This precision bearing is ideally suited for applications where high speed, accuracy, and rigidity are paramount. Key industries and equipment include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Spindles: PCB drilling and routing machines.
- High-Frequency Motors: Spindles for electric motors operating at very high RPM.
- Medical Equipment: High-speed handpieces and dental drills.
- Robotics: Precision joints and arm assemblies requiring high rigidity.
