7011 ACD/P4AQFCC
7000 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
7011 ACD/P4AQFCC
Basic Information
System of measurement
Metric
Weight
1.51 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
72 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
22388 lbf
Radial static load rating
28125 lbf
Limiting speed
34 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Quadruplex Face-to-Face (QFC)
Number of bearings in matched set
4
Universal matching bearing
No (Standard)
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/P4AQFCC Bearing Product Overview & Core Advantages
The 7011 ACD/P4AQFCC is a precision quadruplex matched set of angular contact ball bearings designed for applications requiring exceptional rigidity and accuracy. This P4A tolerance class bearing set is pre-configured in a Face-to-Face (QFC) arrangement, enabling it to handle significant combined loads (radial and axial) from both directions simultaneously. Its moderate preload (Class C) ensures high system stiffness, minimal runout, and optimal performance in high-precision machinery. The open design, combined with phenolic cage and superior lubrication, supports reliable operation at high rotational speeds.
Model Code Breakdown
| Code Segment | Technical Meaning |
|---|---|
| 7011 | Basic bearing series, 55 mm bore, 90 mm OD |
| ACD | 25° contact angle design, optimized for axial load capacity |
| P4A | High precision tolerance class exceeding ABEC 7, ensuring minimal dimensional variation |
| QFC | Quadruplex Face-to-Face matched set arrangement (4 bearings) |
| C | Moderate preload for high rigidity and precise rotational accuracy |
7011 ACD/P4AQFCC Bearing Structural Features & Performance Benefits
- Extreme Rigidity & Accuracy: The quadruplex matched set in a Face-to-Face configuration provides maximum system stiffness and minimizes axial/radial deflection under heavy combined loads.
- Superior Load Capacity: The 25° contact angle and optimized internal geometry enable high radial (22,388 lbf dynamic) and bidirectional axial load support.
- High-Speed Capability: The lightweight phenolic cage and precision P4A tolerances ensure stable operation up to the 34,000 rpm limiting speed.
- Pre-Configured Performance: The set is supplied lubricated and matched, reducing installation time and ensuring consistent preload and running accuracy across all four bearings.
- Durability: Manufactured from chrome steel rings and balls, providing high wear resistance and long service life in demanding environments.
7011 ACD/P4AQFCC Bearing Typical Application Areas
- Machine Tool Spindles: High-precision milling, grinding, and turning centers requiring extreme rigidity and accuracy.
- High-Speed Machining Centers: Applications where combined loads and thermal stability are critical.
- Precision Gearboxes: Industrial transmissions requiring minimal deflection and high positional accuracy.
- Robotic Rotary Unions: Critical joints in advanced automation systems demanding high moment stiffness.
- Aerospace Test Rigs: Precision positioning systems and simulators requiring reliable, high-speed bearing arrangements.
