7011 ACDGC/P4A
7000 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
7011 ACDGC/P4A
Basic Information
System of measurement
Metric
Weight
0.38 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
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°C to 110 °C
Radial dynamic load rating
8348 lbf
Radial static load rating
6975 lbf
Limiting speed
34 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Single
Number of bearings in matched set
2
Universal matching bearing
Universal Matchable (SU)
Preload
Moderate / Class C
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 ACDGC/P4A Bearing Product Overview & Core Advantages
The 7011 ACDGC/P4A is a high-precision angular contact ball bearing designed for applications demanding exceptional rotational accuracy and rigidity. Engineered to a P4A tolerance class, it offers superior dimensional and running accuracy. This bearing is universally matchable (SU), allowing for precise preload control when mounted in pairs. Its key advantages include the ability to accommodate combined loads (radial and axial loads simultaneously), high limiting speed capabilities, and reliable performance in a wide temperature range from -30°C to 110°C, making it ideal for high-performance machinery.
Model Code Breakdown
| Code Segment | Technical Meaning |
|---|---|
| 7011 | Basic bearing series and size designation (55mm bore, 90mm OD). |
| AC | Angular Contact design with a 25° contact angle. |
| D | Optimized internal geometry for high-speed operation. |
| GC | Specific internal clearance and preload grade (Moderate / Class C). |
| P4A | High precision tolerance class, superior to ABEC-7. |
7011 ACDGC/P4A Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The angular contact design with a 25° contact angle enables the bearing to efficiently support significant combined radial and axial loads.
- Precision Performance: Manufactured to a P4A tolerance class, this bearing ensures minimal runout and vibration, which is critical for high-precision spindles.
- High-Speed Capability: The lightweight phenolic cage and optimized internal design contribute to a high limiting speed of 34,000 rpm, reducing centrifugal forces and heat generation.
- Universal Matching: Designated as Universal Matchable (SU), two bearings can be paired in a duplex set to achieve a specific preload (Moderate / Class C in this case) without selective mounting, simplifying installation and enhancing system stiffness.
- Material & Lubrication: Constructed from high-grade chrome steel for both rings and balls, ensuring durability and long service life. The bearing is pre-lubricated for immediate operation.
7011 ACDGC/P4A Bearing Typical Application Areas
This precision angular contact ball bearing is ideally suited for high-performance applications, including:
- Machine Tool Spindles
- High-Frequency Motors
- Precision Grinding Spindles
- Robotic Drives and Actuators
- Aerospace Control Systems
