7011 ACD/P4ADGD
7000 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
7011 ACD/P4ADGD
Basic Information
System of measurement
Metric
Weight
0.76 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
36 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
13612 lbf
Radial static load rating
13950 lbf
Limiting speed
34 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Universal Matchable (SU)
Number of bearings in matched set
2
Universal matching bearing
Universal Matchable (SU)
Preload
Heavy / Class D
Materials
Ring material
Chrome Steel
Ball material
Chrome Steel
Cage material
Phenolic
Technical Drawings
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In Stock
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7011 ACD/P4ADGD Bearing Product Overview & Core Advantages
The 7011 ACD/P4ADGD is a precision angular contact ball bearing designed for applications demanding exceptional rigidity and accuracy under combined loads. As a Universal Matchable (SU) bearing supplied in a pre-set pair, it is engineered to accommodate significant radial and axial loads simultaneously. Its P4A tolerance class and Heavy preload (Class D) ensure high running accuracy and system stability, making it ideal for high-precision, high-reliability machinery where minimal deflection is critical.
7011 ACD/P4ADGD Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning | Significance & Advantage |
|---|---|---|
| ACD | Angular Contact Design, 25° Contact Angle | Optimized for carrying combined (radial and axial) loads efficiently. |
| P4A | High Precision Tolerance Class | Guarantees extremely tight dimensional and running accuracy for superior performance in precision applications. |
| D (in P4ADGD) | Heavy Preload (Class D) | Increases bearing rigidity, reduces system deflection, and improves positional accuracy. |
| GD | Greased with specific lubricant | Pre-lubricated for immediate operation, suitable for the specified temperature range. |
7011 ACD/P4ADGD Bearing Structural Features & Performance Benefits
- High Rigidity and System Stability: The combination of a 25° contact angle and a Heavy preload (Class D) provides maximum resistance to operational forces, minimizing shaft deflection and ensuring precise rotational movement.
- Superior Load Capacity: The angular contact design is inherently capable of handling high radial dynamic load ratings (13,612 lbf) and axial loads simultaneously, making it suitable for demanding applications.
- Precision Performance: Manufactured to P4A tolerance class, this bearing offers exceptionally tight running accuracy, which is critical for applications like machine tool spindles.
- Optimized Internal Geometry: Featuring a phenolic cage, 18 high-grade chrome steel balls, and optimized internal clearances, this bearing is built for smooth operation and high limiting speeds (34,000 rpm).
- Universal Matchability (SU): Supplied as a universal matchable pair, these bearings can be mounted in various configurations (back-to-back, face-to-face, or tandem) to perfectly suit the specific load and rigidity requirements of the application.
7011 ACD/P4ADGD Bearing Typical Application Areas
The 7011 ACD/P4ADGD is ideally suited for high-performance machinery requiring precision, rigidity, and speed. Key application areas include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Gearboxes: Where high torque and minimal backlash are required.
- High-Frequency Motors and Spindles: Applications demanding high rotational accuracy and stability.
- Industrial Pumps and Compressors: For handling significant radial and axial loads.
- Robotic Arms and Precision Automation: Ensuring accurate and repeatable positioning.
